GB1462922A – Fault detecting and indicating apparatus
– Google Patents
GB1462922A – Fault detecting and indicating apparatus
– Google Patents
Fault detecting and indicating apparatus
Info
Publication number
GB1462922A
GB1462922A
GB2310074A
GB2310074A
GB1462922A
GB 1462922 A
GB1462922 A
GB 1462922A
GB 2310074 A
GB2310074 A
GB 2310074A
GB 2310074 A
GB2310074 A
GB 2310074A
GB 1462922 A
GB1462922 A
GB 1462922A
Authority
GB
United Kingdom
Prior art keywords
switch
coil
energized
fault
bulb
Prior art date
1973-06-02
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.)
Expired
Application number
GB2310074A
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.)
Denso Corp
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
NipponDenso Co Ltd
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.)
1973-06-02
Filing date
1974-05-23
Publication date
1977-01-26
1974-05-23
Application filed by Toyota Motor Corp, NipponDenso Co Ltd
filed
Critical
Toyota Motor Corp
1977-01-26
Publication of GB1462922A
publication
Critical
patent/GB1462922A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
F16D66/02—Apparatus for indicating wear
F16D66/021—Apparatus for indicating wear using electrical detection or indication means
F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
F16D66/02—Apparatus for indicating wear
F16D66/021—Apparatus for indicating wear using electrical detection or indication means
F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
G—PHYSICS
G01—MEASURING; TESTING
G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
G01F23/68—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means
G01F23/70—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points
G—PHYSICS
G07—CHECKING-DEVICES
G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
G07C3/005—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles during manufacturing process
G—PHYSICS
G07—CHECKING-DEVICES
G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
G07C5/00—Registering or indicating the working of vehicles
G07C5/006—Indicating maintenance
Abstract
1462922 Indicating faults NIPPONDENSO CO Ltd and TOYOTA JIDOSHA KOGYO KK 23 May 1974 [2 June 1973] 23100/74 Heading G1U [Also in Division F2] A fault indicator includes a differential relay including two oppositely wound coils, one of which becomes de-energized on the occurrence of a fault, causing the field of the other coil to actuate a magnetic switch which operates an indicator and also short circuits the de-energized coil. Switch 9 is normally closed, thus coils 3, 4 are both energized and their fields cancel out leaving reed switch 5 open. On switch 9 opening, coil 3 is de-energized, and the field of coil 4 closes the switch 5 allowing current to flow through indicator lamp 8. A path is also closed through resistor 1, diode 7 and switch 5 which short-circuits the coil 3 such that if switch 9 now closes, e.g. through vibration, coil 3 remains de-energized. The bulb 8 is tested by connecting switch 14 to the positive supply, whereon transistor 12 conducts and the bulb should light. Other embodiments involve a delay between the occurrence of a fault and the opening of switch 9 to obviate response to spurious events Figs. 2, 3 (not shown) and modifications to utilize a normally open switch 9 Fig. 3 (not shown). The device may be used to indicate the low level of oil in a pan or a vehicle in which case preferably two reed-switches 9 are used in parallel and mounted at right-front and left-rear, these being operated by magnetic floats. Another embodiment is used to detect the wear of a brake pad lining Figs. 4, 5 (not shown). The test circuit is similar to the Fig. 1 embodiment except that switch 9 is omitted, the bottom end of the coil 3 being grounded and a wire embedded in the brake pad forms the connection between resistor 1 and coil 3. Thus if this point is grounded, coil 3 is de-energized and the circuit operates as before.
GB2310074A
1973-06-02
1974-05-23
Fault detecting and indicating apparatus
Expired
GB1462922A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP6211173A
JPS54760B2
(en)
1973-06-02
1973-06-02
Publications (1)
Publication Number
Publication Date
GB1462922A
true
GB1462922A
(en)
1977-01-26
Family
ID=13190606
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2310074A
Expired
GB1462922A
(en)
1973-06-02
1974-05-23
Fault detecting and indicating apparatus
Country Status (6)
Country
Link
US
(1)
US3886517A
(en)
JP
(1)
JPS54760B2
(en)
AU
(1)
AU471342B2
(en)
DE
(1)
DE2426303C3
(en)
FR
(1)
FR2232021B1
(en)
GB
(1)
GB1462922A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2156925A
(en)
*
1984-03-31
1985-10-16
Textar Gmbh
Wear indicator
Families Citing this family (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5224729U
(en)
*
1975-08-12
1977-02-21
DE2847911A1
(en)
*
1978-11-04
1980-05-22
Wabco Fahrzeugbremsen Gmbh
DEVICE FOR DISPLAYING THE WEAR OF A BRAKE PAD
DE3126544A1
(en)
*
1981-07-04
1983-01-20
Vdo Adolf Schindling Ag, 6000 Frankfurt
Level-warning device
DE3635241A1
(en)
*
1986-10-16
1988-04-28
Daimler Benz Ag
Device for monitoring the level of a liquid in a container
JP2553117Y2
(en)
*
1991-12-13
1997-11-05
住友電装株式会社
Probe for detecting wear of brake lining material
JP2871315B2
(en)
*
1992-07-08
1999-03-17
住友電装株式会社
Method of manufacturing probe for detecting wear of brake lining material
JP3227928B2
(en)
*
1993-08-06
2001-11-12
住友電装株式会社
Patware indicator
US6040767A
(en)
*
1997-06-19
2000-03-21
Briggs & Stratton Corporation
Control system for engine lubricant level sensor
US6975216B2
(en)
*
2003-06-04
2005-12-13
Briggs & Stratton Corporation
System and method for indicating fluid condition
CN110886799A
(en)
*
2019-12-10
2020-03-17
镇江神行太保科技有限公司
Lining wear alarm device for semitrailer drum brake
EP3982000A1
(en)
*
2020-10-06
2022-04-13
ZF CV Systems Europe BV
Device for recognizing wear of a brake pad of a disk brake
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3250950A
(en)
*
1963-06-13
1966-05-10
Reiche Walter George
Means for indicating the condition of lamps in a vehicle
US3560918A
(en)
*
1967-12-08
1971-02-02
Bendix Corp
Indicator means for fluid pressure and fluid supply
FR2076600A5
(en)
*
1970-01-21
1971-10-15
Socomec Sa
JPS512535Y2
(en)
*
1971-03-30
1976-01-24
JPS5131905B2
(en)
*
1971-10-13
1976-09-09
1973
1973-06-02
JP
JP6211173A
patent/JPS54760B2/ja
not_active
Expired
1974
1974-05-23
GB
GB2310074A
patent/GB1462922A/en
not_active
Expired
1974-05-24
AU
AU69372/74A
patent/AU471342B2/en
not_active
Expired
1974-05-29
DE
DE2426303A
patent/DE2426303C3/en
not_active
Expired
1974-05-30
US
US474859A
patent/US3886517A/en
not_active
Expired – Lifetime
1974-05-31
FR
FR7419088A
patent/FR2232021B1/fr
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2156925A
(en)
*
1984-03-31
1985-10-16
Textar Gmbh
Wear indicator
Also Published As
Publication number
Publication date
FR2232021A1
(en)
1974-12-27
DE2426303A1
(en)
1974-12-19
JPS54760B2
(en)
1979-01-16
DE2426303C3
(en)
1978-06-01
JPS5011696A
(en)
1975-02-06
AU471342B2
(en)
1976-04-15
AU6937274A
(en)
1975-11-27
US3886517A
(en)
1975-05-27
DE2426303B2
(en)
1977-09-29
FR2232021B1
(en)
1976-12-24
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Legal Events
Date
Code
Title
Description
1977-06-16
PS
Patent sealed [section 19, patents act 1949]
1981-12-23
PCNP
Patent ceased through non-payment of renewal fee
