AU602259B2 - Creación de Inventos y Patentes con Inteligencia Artificial

AU602259B2 – Flush assembly
– Google Patents

AU602259B2 – Flush assembly
– Google Patents
Flush assembly

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Publication number
AU602259B2

AU602259B2
AU23955/88A
AU2395588A
AU602259B2
AU 602259 B2
AU602259 B2
AU 602259B2
AU 23955/88 A
AU23955/88 A
AU 23955/88A
AU 2395588 A
AU2395588 A
AU 2395588A
AU 602259 B2
AU602259 B2
AU 602259B2
Authority
AU
Australia
Prior art keywords
bowl
portable toilet
flush water
actuating member
toilet according
Prior art date
1987-10-27
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Ceased

Application number
AU23955/88A
Other versions

AU2395588A
(en

Inventor
John Michael Antos
Scott Ignatius Biba
Charles Lee Sargent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Thetford Corp

Original Assignee
Thetford Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1987-10-27
Filing date
1988-10-17
Publication date
1990-10-04

1988-10-17
Application filed by Thetford Corp
filed
Critical
Thetford Corp

1989-04-27
Publication of AU2395588A
publication
Critical
patent/AU2395588A/en

1990-10-04
Application granted
granted
Critical

1990-10-04
Publication of AU602259B2
publication
Critical
patent/AU602259B2/en

2008-10-17
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

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Classifications

E—FIXED CONSTRUCTIONS

E03—WATER SUPPLY; SEWERAGE

E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR

E03D5/00—Special constructions of flushing devices, e.g. closed flushing system

E03D5/012—Special constructions of flushing devices, e.g. closed flushing system combined with movable closure elements in the bowl outlet

E—FIXED CONSTRUCTIONS

E03—WATER SUPPLY; SEWERAGE

E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR

E03D5/00—Special constructions of flushing devices, e.g. closed flushing system

E03D5/01—Special constructions of flushing devices, e.g. closed flushing system using flushing pumps

E—FIXED CONSTRUCTIONS

E03—WATER SUPPLY; SEWERAGE

E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR

E03D5/00—Special constructions of flushing devices, e.g. closed flushing system

E03D5/016—Special constructions of flushing devices, e.g. closed flushing system with recirculation of bowl-cleaning fluid

Description

ItlNixlJmr=i~~- »YLIUIU~~~i 602259 COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION COMPLETE SP This document contains the amendments made und r Section 49 and is correct for printing NAME ADDRESS OF APPLICANT: Thetford Corporation 7101 Jackson Road Ann Arbor Michigan 48103 United States of America NAME(S) OF INVENTOR(S): Charles Lee SARGENT John Michael ANTOS Scott Ignatius BIBA ADDRESS FOR SERVICE: DAVIES COLLISON Patent Attorneys 1 Little Collins Street, Melbourne, 3000.
COMPLETE SPECIFICATION FOR THE INVENTION ENTITLED: Flush assembly The following statement is a full description of this invention, including the best method of performing it known to me/us:-
I
1 i BAMMIUND OF THE INVENIM1 This invention relates generally to pOrtable toilets and mo~re particularly to a portable toilet which carries its own poor supply for .1operating the flush assembly. U.S. Patent 4,641,383 illustrates a portable toilet of the particular type to which this invention relates.
It is conventional practice when flushing portable toilets of this type to utilize manually operable pumps of the bellows type for pumping flush water from a water storage tank in the toilet into the toilet bowl.
Pumips of the bellows type are illustrated in prior U.S. Patents 3,570,018 I and 3,949,430, all of said prior patents being assigned to the assignee of this application.
Pumps of of the bellows type are low cost items which allow water ounservatioi to be observed and have proved to be satisfactory for the reeds of portable toilet users.* However, there is a need for imprated power operated flush assemblies in portable toilets in order to provide for improved flushing of the toilet and also to provide for zmore efficient use of the flush water supply and enable the use of portable toilets by’ handicapped or elderly persons that do not have the strength or other physical ability to operate a bellcws pump.
U.S. Patent 4,185,337 also assigned to the assignee of this application, shows a portable toilet with an electrically operated flush apparatus but the flush apparatus illustrated in this patent regbires an -2 i 1 external source of power and involves a continuous flush 2 which has limitations from an efficiency standpoint.
3 It is the object of this invention, therefore, to 4 provide an improved portable toilet with a battery operated flush assembly.
6 According to the present invention there is provided a I 7 portable toilet which includes a seat section having a bowl 8 with a bottom discharge opening and a chamber containing 9 flush water for rinsing said bowl and flushing contents 1 0 thereof through said discharge opening, pump means operable 11 to move water from said flush water chamber into said bowl, 12 an enclosure for said pump means having a lower flush water 13 inlet communicating with said flush water chamber, electric 14 motor means drivingly connected to said pump means, battery means mounted on said seat section and electrically 16 connected to said motor means, and closure means for said 17 flush water inlet movable between open and closed positions, 18 said closure means in the closed position blocking flow of 19 flush water from said chamber into said enclosure and then into said bowl.
21 Further objects, features and advantages of the 22 invention will become apparent from a consideration of the 23 following description of preferred embodiments in which: 24 Figure 1 is a top view of the portable toilet of this invention, with a portion of the seat broke away to show the 26 toilet bowl; 27 Figure 2 is an enlarged transverse sectional view of 28 the portable toilet of this invention as seen from 29 substantially the line 2-2 in Figure 1; 4 31 32 33 34 36 37 3,arsspe.035,23955c1.
17 Figure 3 is an enlarged transverse sectional view of the portable toilet of this invention as seen from substantially the line 3-3 in Figure 2; it Figures 4 and 5 are horizontal sectional views of the flush assembly in the portable toilet of this invention as seen from substantially the lines 4-4 andi 5-5, respectively, in Figure 6; Figure 6 is an enlarged vertical sectional view of the portion of the toilet shown in Figure I in which the f lush assembly of this invention is embodied; Figure 7 is another vertical sectional view of the f lush assembly of this invention; Figures 8 and 9 are exploded perspective views of portions of the flush assembly illustrated in Figures 6 and 7; Figure 10 is a circuit diagram illustrating the electric circuit in the flush assembly of this invention; and Figure 11 is a graph illustrating thp pulsed flush in the flush assembly of this invention in which voltage and velocity are plotted against time.
With r(ference to the drawing, the improved portable toilet of this invention, indicated generally at 10, is illustrated in Figures 1 and 2 as including a seat section 12 which separably mo~unts on a holding tank section 14 in a coiventional manner. The seat section 12 includes a bowl 16, and an overlying seat 18 and a cover 20 which are hingedly mrounted on the section 12. A flush water storage tank or chamber 22 is provided within the interior of seat section 12 and is filled with fresh water via a fill port which is covered by a removable cap 24.
A pumping mechanism indicated generally at 26 is provided for pumping fresh water from the water storage chamber 22 into the bow~l 16 in order to flush the toilet. The bowl 16 includes a bottom discharge opening 28 at its lower end and a flush ledge 30 near its upper end on which flush water is deposited for flow along the ledge and inwardly of f the ledge so as to uniformly wet the bowl 16. The discharge opening 28 registers with an inlet opening 32 (Figure 3) in the top wall of holding tank 14. Opening 32 is closed by a slide valve 34 mounted within the interior of the holding tank 14. Because of the separable mo~unting of the two sections 12 and 14, the holding tank section 14 can be remocved for dumping.
I~ t If The pump mechanism 26 includes a battery operated pump assembly 36 (Figure 6) which is mounted on the seat section 12 in an upwardly facing opening 38 in what amounts to the right rear corner of the top surface 40 of the seat section 12. A sealing ring 41 provides for a fluid tight assembly of the pump assembly 36 with the seat section 12.
The pump assembly 36 includes a housing 42 which is generally upright and includes at continuous side wall 44, a top cover plate 46, an intermediate plate 47, and a bottom wall 48. Between the walls 46 and 48, the housing 42 is fluid tight. An enclosure 49 below the housing 42 is open at its lower end and carries a sealing closure plate 50 which normally closes the lower end of the enclosure 49.
Between the plates 46 and 47, the housing 42 defines a battery ~4.chamber 52 and between the plate 47 and bottom wall 48, the housing 44 defines a chambec: 54 in which an electric mo~tor 56 is housed having a downwardly extending drive shaft 58 on which a pump propeller 60 is Ur.
tA z.; mounted. The propeller 60 consists of a bullet shaped bod~y 62 having short spiral vanes 64 formed on its outer surface, Telescoped over the upper end of the housing 42 is an actuatD, cap 66, sometimes referred to as a «palm button» because it is intended to be depressed with the palm of the hand. Th actuator cap has a top wall 68 and a depending skirt 70 and is open at its lower end so that it can readily be telescoped over the upper end of the housing 42.
The lower end of the actuator cap skirt 70 is formed at a plurality of circumferentially spaced points with inwardly directed projections 72 wh.ich, when the cap 66 is manually telescoped downwardly over the housing 42, will sra over a corresponding number of outwadrdly extending projections 74 formed on the housing 42. The cap 66 is formed of a relatively thin gauge deflectable plastic material so that the skirt will readily deflect outwardly and spring back inwardly as the projections 72 pass over the projections 74. Similarly, the skirt 70 can be manually grasped and squeezed to deflect the lower end of the skirt outwardly so as to enable the projections 72 to pass over the projections 74 when it is desired to remo~ve the actuator cap 66 from the housing 42.
Four batteries 76 (Figure 9) are imounted on the plate 47 and housed within the chamber 52. Upright, irregularly shaped, partitions 78 on the plate 47 function to maintain the batteries 76 in upright positions and also cooperate with the housing 42 and its side wall 44 to define an enclosure in which a circuit board 80 is housed, the enclosure L.4>Jhaving a top wall 82 in which an opening 84 is formed for a purpose to appear presently.
The circuit bo’ard 80 supports zmst of the components of the electrical circuit indicated generally at 86 in Figure 10. The circuit
ALI
86 has leads 88 connected to the batteries 76 and leads 90 connected to the electric motor 56. The circuit 86 also includes a warning light LED 92 which is mo~unted on the wall 82 in alignment with the opening 84 which is also aligned with an opening 94 in the top wall 68 of the actuator cap 66. The circuit 86 also includes a magnetic reed switch 96 which is mounted in the chamb~er 52 on the wall 44 of the housing 42 at a position in which, when the actuator cap 66 is depressed, a magnet 98 carried by the actuator cap skirt 70 will actuate the switch 96 so that it will open and close continuously so long as the cap 66 is maintained in its depressed position. This opening and closing takes place rapidly, for 0 0example, on a one-second cycle basis, as illustrated in Figure 11. As 0 will be described in detail hereinafter, such a condition of the switch 00 096 will provide for a puilsed flow of flush water from the chamber 22 to 00 0 00 000aI the toilet bowl 16. The function of the light 92 is to visually warn the toilet user, that the batteries 76 are low and replacemrent should be considered.
0 A cover plate seal 100 mounts the cover plate 46 on the upper end of the housing 42 so as to maintain the chamber 52 in f luid tight 0 condition. A compression spring 102 telescoped over a short post 103 on the plate 46 is maintained in a compressed condition by a retainer cap tit 104 which has a central round projection 105 in a tongue and groove q relationship with a downwardly extending projection 103 on the top wall 68 of the actuator cap 66. The tongue and groove relationship prevents rotation of the cap 66 on the housing 42.
A generally circular thumb wheel 106 has a toothed portion 108 (Figures 6 and 8) which projects transversly through a slot 110 in the actuator cap skirt 70.* A cap shaped central portion 112 of thie thumb 41 00 0 0 00 0 4 00 0 0 0 0 00 0 00 00 0 00 00 00a 0 0 0 00 0 0 )0 0 00 0 0 a 00 a t 00 0 0 a 00 4 0 00a 0000 0 0 000 00 00 00000 %heel 106 telescopes downwardly over the retainer projection 105. This mounting~ enables rotation of the thumb wheel about the projection 105.
As shown in Figures 6 and 8, the cover plate 46 is formed with a plurality of upstanding posts 114 which are arranged concentrically around the thumb wheel retainer 104.
As shown in Figure 5, the posts 114 are vertically aligned with a plurality of openings 116 in the thumb wheel 106, in one rotated position of the thumb wheel 106, thpreby enabling the actuator cap 66 and the thu~mb wheel 106 to be moved downwardly relative to the posts 114. This rotated position of the thumb wheel 106 correspo~nds to an «on» condition of the switch 96 because it enables the actuator cap 66 to be mroved downwardly to a position in which the magnet 98 will actuate the switch 96.
In another rotated position of the thumb wheel 106, the portions of the thumb wheel 106 between the openings 116, are aligned with the posts 114 so that if depression of the actuator cap 66 is attempted, the thumb wheel 106 will engage the posts 114 and prevent movement of the magnet 98 to~a position in which it will actuate the switch 96. Thus, such a moved position of the thumb~ wheel 106 corresponds to an «off» condition of the switch 96 and effectively locks the cap 66 in a position in which the toilet can not be inadvertently flushed.
Mien the actuator cap 66 is depressed to actuate the switch 96 which energizes the motor 56 so as to drive the drive shaft 58 so as to rapidly rotate the propeller 60 about the vertical axis of the shaft 58, it is also necessary to move the closure plate 50 at the lower end of the housing 42 to the open position shown in broken lines in Figure 7. As shown in Figure 7 the closure plate 50 includes a shaft 122 which is -7 rotatably mounted in a hinge 124 formred on the lower end of the enclosure 49. The opposite end of the closure plate 50 is cc-iectei to a tension spring 126 ubich is mounted on the enclosure 49. The- spring 126 maintains the closure plate 50 in a normally closed position. In order to move the closure plate 50 to its open position, the closure plate has to be moved against the tension force of the spring 126.
As shown in Figure 4, the housing wall 44 opposite the battery chamber 52 has an inwardly extending portion 130 which provides a vertically extending space 132 within the cap 66 to one ride of the chamber 52. An actuating rod 134 for opening the closure plate 50 in response to downward movement of the actuating cap 66 is provided. Thbe rod 134 has its lowrend 136 nested in acavity in the free endl38 of the closure plate 50. The rod 134 extends upwardly through the plate 47 and at its upper end carries a yeildable cover member 142 which engages the underside of the cover plate 46. An actuator rod 140 on the underside of the tcp wall 68 of the actuator cap 66 is moveable downwardly, in response to depression of the cap 66, through an opening (not shown) i, the cover plate 46 to engage the cover member 140 and move the actuating rod 134 downwardly to in turn pivotally move the closure plate 50 downwardly about the shaft 122 to an open position in which the water in the f lush water tank: 22 communicates with a pump chamber 144 within housing 49 in which the propeller 60 is located. A stop member 143 is adjustably mouinted on rod 134 to limit uward movement of the rod 134.
Rapid rotation of the propeller 60 about the vertical axis of the drive shaft 58 causes water fromi the tank 22 entering the chamber 144 to be moved rapidly upwardly in the chamber 144 into a sp3′ al chamber 146 1ey 7A ,A41~
C
thereabove for flow in a horizontal direction into the inlet end of a tube 146 whAichi connects the pumrp to the toilet bowl 16. The outlet end 148 of the tube 146 is positioned directly above and in line with the flush ledge 30. As a result, pulses of water issuing from~ the tube discharge end 148 will travel around the periphery of the bowl 16 on the ledge 30, and as the water mo~ving on the ledge 30 loses its momrentum, and as the velocity of the water decreases, the centrifugal force of the water that is holding it on the ledge 30 and against the outer bowl wall 150 above the ledge 30 (Figure 3) decreases and the water will gradually run off the inner end of the ledge 30 and down the bowl 16 toward the outlet 28 so as to flush the bowl contents through the opening 28 and thoroughly wet the inner surface of the bowl 16 so as to accomplish the desired complete flushing of the bowl 16. The normal high and low water levels in thie water chamber 22 are shown at A and B in Figure 7.
As shown in IPigure 11, the circuit 2″6 operates to intermittently reduce the voltage on the moutor 56 from a maximumx value to zero once every second, the time in seconds being indicated by the numerals 1, 2, 3. This results in the velocity of the pulsed flush water being 0 similarly cycled in 1 second cycles between a maximum velocity and a S velocity only slightly greater than zero. The result is a puilsed action of the water which is continuously repeatable in a uniform manner so that t che toilet user can flush the toilet 10 by mo~ving the thumtb wheel 108 to the «cc» position, subsequently depressing the actuating cap 66 and maintaining the actuating cap 66 in a depressed position for a desired period of time necessary to accomplish complete flushing of the bowl 16.
The operation of the actuator cap 66 can be repeated over the service life of the toilet 10 with the knowledge that each flushing cycle will be 9,41 7
AU
L a predictable repeat of previous cycles. This uniformity of operation is desirable from the standpoint of economic use of water from the tank 22 and economic use of the batteries 76 over a prolonged service life.
When the batteries 76 become low enough to consider replacement, but prior to the time the batteries become so low that they will not operate the circuit 86, the light 92 will so indicate.
The elements and operation of the circuit 86 will now be described with reference to Figure 10. The circuit 86 perform the functions of providing an indication of low battery voltage and mrodulates the voltage applied to the motor 56 to provide a pulsed water output, as previously described. The circuit 86 is divided into two functional subcircuits, a low battery indicator circuit 151, and a pulsing circuit 152, both carried by the circuit board The low battery indicator circuit 151 includes a voltage detector 154 which is powered by battery voltage flowing through a diode 156. The voltage detector 154 provides a constant voltage output at the terminal 158 while the battery voltage is within a given range. If however, battery voltage falls below a predetermined level, the terminal 158 is turned off. The signal from terminal 158 is applied to the base terminal OS I C of the transistor 160. The emitter of the transistor 160 is at battery voltage once the switch 96 is closed. The low battery warning LED 92 is connected between battery ground and the collector of the transistor 160.
In operation, the transistor 160 acts as a switch which controls current flow through the LED 92, based on. the signal applied by the voltage detector 154. When the switch 96 is open, no current flows thirough the LED 92. When the switch 96 is closed while the battery 4 T&e» voltage is at a high level, the voltage detect.or 154 provides a signal which prevents current flow through the IED 92. If, however, battery voltage applied to the emitter terminal goes below a predetermined level, terminal 158 is turned off which allows current to flow through LED 92 causing it to illuminate. Accordingly, the low battery indicator circuit 153. provides a visual indication to the user of a low battery voltage condition.
The pulsing circuit 152 includes three series connected op-amps or inverters 162, 164, and 166. A feedback signal is applied to inverter 162 through resistor 172 from the output of inverter 164 through a capacitor 168, and from the output of inverter 166 through a resistor 170. Since the charging of the capacitor 168 is time dependent, the feedback voltage applied to the invertor 162 changes with respect to time~, causing the output from invertor 166 to be a square wave with its periodl determined by the values of the capacitor 168 and the resistors 170 and 172. The transistors 174 and 176 act as sw itches which handle motor current. The positive terminal of the motor is normally connected directly to the battery positive terminal while the ground connection is switched by the circuit to provide the desired pulsed output.
From the above description it is seen that this invention provides a portable toilet 10 which includes a battery operated flush assembly. Furthermore, the battery operated flush assembly provides for a «pulsed» action of the flush water in the toilet bowl 16 to providE; for more efficient and inproved flushing action. This i~s accomplished by using the improved axial flow pump which operates to lift relatively small amounts of w’ater relatively short distances and pulse it into the toilet bowl. All of these advantages are obtained while still ma~intaining efficient use of the batteries that operate the flush L4
I
trechanism and without risking leaking of the flush water fromn the toilet during transport.
114 Rj2

Claims (1)

13- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: 1. A portable toilet which includes a seat section having a bowl with a bottom discharge opening and a chamber containing flush water for rinsing said bowl and flushing contents thereof through said discharge opening, pump means operable to move water from said flush water chamber into said bowl, an enclosure for said pump means having a lower flush water inlet communicating with said flush water chamber, electric motor means drivingly connected to said pump means, battery means mounted on said seat section and electrically connected to said motor means, and closure means for said flush water inlet movable between open and closed positions, said closure means in the closed position blocking flow of flush water from said chamber into said enclosure and then into said bowl. 2. The portable toilet according to claim 1 wherein said electrical connection of said battery means to said motor means includes a circuit having an «on/off» switch, and further including a switch actuating member movably mounted on said seat section for movement between two positions i corresponding to «on» and «off» positions of said switch. S3. The portable toilet according to claim 2 further including co-acting means on said seat section and said i actuation member for releasably locking said actuation member in said position corresponding to said switch «off» 1 position. ~4 4. The portable toilet according to claim 3 wherein said mean on said actuating member is a rotatable thumb wheel movable between a position in which said thumb wheel blocks movement of said actuating member and a position in which said thumb wheel does not interfere with said movement. The portable toilet according to claim 4 further 0 including stop means on said seat section engageable with A 900518,arsspe.035,23955c1 -14- Ssaid thumb wheel to block movement thereof in said one Sposition of said thumb wheel. S6. The portable toilet according to claim 2 wherein said circuit further includes means operable to repeatedly open the circuit to said electric motor in the position of said actuating member corresponding to said «on» position of said switch to thereby provide for an intermittent flow of flush water to said bowl thus providing for a flow of flush water 5 in said bowl at both low and high velocities to thereby achieve a uniform wetting of the bowl with flush water. 7. The portable toilet according to claim 6 wherein said switch actuating member is located above said pump means, said battery means is located directly below said actuating member, said pump means is located below and in substantial vertical alignment with said actuating member and said f battery means, and said electric motor means is disposed between said battery means and said pump means. 8. The portable toilet according to claim 7 further including a housing for said battery means located below f said actuating member, and a circuit board member containing said circuit disposed in said housing adjacent said battery i means. 9. The portable toilet according to claim 2 further -i including means operable in response to movement of said actuating member to said position corresponding to the «on» position of said switch for moving said closure means to said open position, said closure means in the closed position blocking flow of flush water from said chamber into said enclosure and thence into said bowl. The portable toilet according to claim 9 wherein said switch actuating member is located above said closure means and said means operable in response to movement o2 said S actuating member is a downwardly extending rod operable to A/r 90051Barospe.035. 23955c1. A/ P- I a transmit a downwardly directed opening force to said closure means. 11. The portable toilet according to claim 10 wherein said closure means is a hingedly mounted closure plate engaged with said rod. 12. A portable toilet according to claim 1 wherein said pump means is located below said bowl and includes an upright drive shaft, a propeller on the lower end of said shaft, said propeller including vanes operable to move flush water upwardly in the general direction of said drive shaft, and conduit means operable to convey flush water from said pump means upwardly to said bowl. 13. A portable toilet substantially as hereinbefore described with reference to the accompanying drawings. Dated this 18th day of May, 1990. DAVIES COLLISON Patent Attorneys for THETFORD CORPORATION g 3 :i 51 r r 1 j t t-C /4i 900518,arsspe.03523955c, Li–

AU23955/88A
1987-10-27
1988-10-17
Flush assembly

Ceased

AU602259B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

US11408187A

1987-10-27
1987-10-27

US114081

1987-10-27

Related Child Applications (1)

Application Number
Title
Priority Date
Filing Date

AU55863/90A
Division

AU623259B2
(en)

1987-10-27
1990-05-24
Portable toilet with pulsed flow of flush water

Publications (2)

Publication Number
Publication Date

AU2395588A

AU2395588A
(en)

1989-04-27

AU602259B2
true

AU602259B2
(en)

1990-10-04

Family
ID=22353266
Family Applications (2)

Application Number
Title
Priority Date
Filing Date

AU23955/88A
Ceased

AU602259B2
(en)

1987-10-27
1988-10-17
Flush assembly

AU55863/90A
Ceased

AU623259B2
(en)

1987-10-27
1990-05-24
Portable toilet with pulsed flow of flush water

Family Applications After (1)

Application Number
Title
Priority Date
Filing Date

AU55863/90A
Ceased

AU623259B2
(en)

1987-10-27
1990-05-24
Portable toilet with pulsed flow of flush water

Country Status (5)

Country
Link

EP
(2)

EP0371008B1
(en)

AU
(2)

AU602259B2
(en)

CA
(1)

CA1282908C
(en)

DE
(2)

DE3876630T2
(en)

NZ
(1)

NZ226382A
(en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4850064A
(en)

1987-11-09
1989-07-25
Thetford Corporation
Portable toilet with vent for flush water supply tank

US5305475A
(en)

1992-11-13
1994-04-26
Kohler Co.
Pump operated plumbing fixture

CN111305335A
(en)

2020-02-26
2020-06-19
浙江科助达机械科技有限公司
Toilet and design method

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Publication number
Priority date
Publication date
Assignee
Title

US3015281A
(en)

1960-02-23
1962-01-02

Cederholm R F D 1

Portable liquid pump

US3570018A
(en)

1968-04-25
1971-03-16

Thetford Corp

Portable toilet

US4185337A
(en)

1978-09-26
1980-01-29

Thetford Corporation

Portable toilet with improved flush apparatus

1988

1988-09-27
CA
CA000578591A
patent/CA1282908C/en
not_active
Expired – Fee Related

1988-09-29
NZ
NZ22638288A
patent/NZ226382A/en
unknown

1988-10-17
DE
DE19883876630
patent/DE3876630T2/en
not_active
Expired – Fee Related

1988-10-17
AU
AU23955/88A
patent/AU602259B2/en
not_active
Ceased

1988-10-17
EP
EP19900102080
patent/EP0371008B1/en
not_active
Expired

1988-10-17
EP
EP19880309695
patent/EP0314358B1/en
not_active
Expired

1988-10-17
DE
DE8888309695T
patent/DE3861514D1/en
not_active
Expired – Fee Related

1990

1990-05-24
AU
AU55863/90A
patent/AU623259B2/en
not_active
Ceased

Patent Citations (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3015281A
(en)

1960-02-23
1962-01-02
Cederholm R F D 1
Portable liquid pump

US3570018A
(en)

1968-04-25
1971-03-16
Thetford Corp
Portable toilet

US4185337A
(en)

1978-09-26
1980-01-29
Thetford Corporation
Portable toilet with improved flush apparatus

Also Published As

Publication number
Publication date

EP0371008B1
(en)

1992-12-09

DE3876630D1
(en)

1993-01-21

EP0314358A1
(en)

1989-05-03

EP0371008A3
(en)

1991-11-06

CA1282908C
(en)

1991-04-16

DE3861514D1
(en)

1991-02-14

AU2395588A
(en)

1989-04-27

AU623259B2
(en)

1992-05-07

EP0371008A2
(en)

1990-05-30

AU5586390A
(en)

1990-09-13

NZ226382A
(en)

1990-09-26

DE3876630T2
(en)

1993-04-08

EP0314358B1
(en)

1991-01-09

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