GB1383476A – Positioning device using negative spring-rate tensioning means
– Google Patents
GB1383476A – Positioning device using negative spring-rate tensioning means
– Google Patents
Positioning device using negative spring-rate tensioning means
Info
Publication number
GB1383476A
GB1383476A
GB639073A
GB639073A
GB1383476A
GB 1383476 A
GB1383476 A
GB 1383476A
GB 639073 A
GB639073 A
GB 639073A
GB 639073 A
GB639073 A
GB 639073A
GB 1383476 A
GB1383476 A
GB 1383476A
Authority
GB
United Kingdom
Prior art keywords
recorder
strut
coil
wire
rotation
Prior art date
1972-03-31
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
GB639073A
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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.)
1972-03-31
Filing date
1973-02-09
Publication date
1974-02-12
1973-02-09
Application filed by Foxboro Co
filed
Critical
Foxboro Co
1974-02-12
Publication of GB1383476A
publication
Critical
patent/GB1383476A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
G—PHYSICS
G01—MEASURING; TESTING
G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
Abstract
1383476 Electric meters; recording apparatus FOXBORO CO 9 Feb 1973 [31 March 1972] 6390/73 Headings G1Q and G1J [Also in Division F2] An apparatus for positioning a member 76 includes an element 70 which changes dimensionally with temperature and a spring assembly 82, 90 which opposes any temperature-induced changes in the member 76 and whose opposing force reduces as the change increases. In a device for positioning a pen-recorder stylus the wire 70 contracts when heated inductively by a coil (80) Fig. 7 (not shown). The frequency of the coil signal is a function of the input voltage Fig. 11 (not shown). As the wire 70 contracts, member 76 is rotated about a flexible support 78 fixed to the recorder housing. Leaf spring 82 is fixed at one end 88 to the recorder housing and at the other places a strut 90 in compression. Strut 90 bears against member 76 at 92 and opposes the member 76 rotation. As the member 76 rotates, the angle it forms with strut 90 decreases and the opposing force thus decreases also. The rotation is coupled by pivot 102 and linkages 96-100 to a flexible support 104 on the housing. A spindle (110), Fig. 7 (not shown), is aligned with support 104 and connected to linkage 100. Rotation of the member 76 thus rotates the spindle (110) causing the pen-recorder stylus to be correctly positioned. If the stylus is subjected to external force e.g. by end-stops or operator error, spring 106 absorbs the energy, protecting the wire 70 from excessive stress. In the coil driver circuit, Fig. 11 (not shown), a differential amplifier has inputs from a potentiometer driven by member 76 and the input voltage. The amplifier output charges a capacitor which provides the bias voltage to transistor oscillator, thereby determining its frequency. The oscillator output drives the heating coil, until the two amplifier inputs are equal.
GB639073A
1972-03-31
1973-02-09
Positioning device using negative spring-rate tensioning means
Expired
GB1383476A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US23990672A
1972-03-31
1972-03-31
Publications (1)
Publication Number
Publication Date
GB1383476A
true
GB1383476A
(en)
1974-02-12
Family
ID=22904242
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB639073A
Expired
GB1383476A
(en)
1972-03-31
1973-02-09
Positioning device using negative spring-rate tensioning means
Country Status (8)
Country
Link
JP
(1)
JPS497683A
(en)
AR
(1)
AR199288A1
(en)
CA
(1)
CA984901A
(en)
DE
(1)
DE2313240C3
(en)
FR
(1)
FR2178941B1
(en)
GB
(1)
GB1383476A
(en)
IT
(1)
IT980042B
(en)
NL
(1)
NL7304478A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2612307A
(en)
*
2021-10-26
2023-05-03
Cambridge Mechatronics Ltd
An actuator assembly
Families Citing this family (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS51102789A
(en)
*
1975-03-07
1976-09-10
Matsushita Electric Ind Co Ltd
SAABOKAIRO
US4197708A
(en)
*
1978-06-09
1980-04-15
Hochstein Peter A
Thermal energy scavenger (alternating stress limiters)
US4197709A
(en)
*
1978-06-09
1980-04-15
Hochstein Peter A
Thermal energy scavenger (stress limiter)
DE3236934A1
(en)
*
1982-10-06
1984-04-12
Robert Bosch Gmbh, 7000 Stuttgart
Apparatus for achieving optimum functional adaption of control devices when they are switched on again
DE3432134A1
(en)
*
1983-09-01
1985-03-21
The Furukawa Electric Co., Ltd., Tokio/Tokyo
DEVICE FOR SWIVELING A CONTROL LEVER
JPS6053676A
(en)
*
1983-09-01
1985-03-27
Furukawa Electric Co Ltd:The
Crank swinging apparatus
JPS61178565A
(en)
*
1985-02-04
1986-08-11
Tokieda Naomitsu
Actuator made of shape memory alloy
1973
1973-02-09
GB
GB639073A
patent/GB1383476A/en
not_active
Expired
1973-03-13
JP
JP2937173A
patent/JPS497683A/ja
active
Pending
1973-03-14
AR
AR24704573A
patent/AR199288A1/en
active
1973-03-15
CA
CA166,198A
patent/CA984901A/en
not_active
Expired
1973-03-16
DE
DE19732313240
patent/DE2313240C3/en
not_active
Expired
1973-03-29
IT
IT4911573A
patent/IT980042B/en
active
1973-03-30
NL
NL7304478A
patent/NL7304478A/xx
not_active
Application Discontinuation
1973-03-30
FR
FR7311505A
patent/FR2178941B1/fr
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2612307A
(en)
*
2021-10-26
2023-05-03
Cambridge Mechatronics Ltd
An actuator assembly
Also Published As
Publication number
Publication date
DE2313240B2
(en)
1978-10-12
CA984901A
(en)
1976-03-02
FR2178941B1
(en)
1976-09-10
DE2313240C3
(en)
1979-06-13
IT980042B
(en)
1974-09-30
JPS497683A
(en)
1974-01-23
NL7304478A
(en)
1973-10-02
DE2313240A1
(en)
1973-10-11
FR2178941A1
(en)
1973-11-16
AR199288A1
(en)
1974-08-23
Similar Documents
Publication
Publication Date
Title
US4522278A
(en)
1985-06-11
Torque sensor
GB1383476A
(en)
1974-02-12
Positioning device using negative spring-rate tensioning means
US1597487A
(en)
1926-08-24
Recording device
US2136223A
(en)
1938-11-08
Torsion indicator
US3088788A
(en)
1963-05-07
Magnetic pen recorder mechanism
US3132916A
(en)
1964-05-12
Combined speed and idling recorder for automotive vehicles and the like
US2466691A
(en)
1949-04-12
Electromagnetic oscillograph
US3441943A
(en)
1969-04-29
Locomotive recording system
GB1365406A
(en)
1974-09-04
Servo apparatus
GB1249052A
(en)
1971-10-06
Improvements in or relating to condition responsive apparatus
GB1146836A
(en)
1969-03-26
Torque measuring devices
US3034126A
(en)
1962-05-08
Recording instrument
US2958027A
(en)
1960-10-25
Velocity servo for graphical recorder time base generator
US1285919A
(en)
1918-11-26
Recording instrument.
GB847758A
(en)
1960-09-14
Improvements in or relating to sound recording or reproducing pick-up heads
US2340718A
(en)
1944-02-01
Barometric telemetering transmitter
GB1476583A
(en)
1977-06-16
Fine focus assembly
US3099161A
(en)
1963-07-30
Bimetal coil for use in temperature recorders
US3319259A
(en)
1967-05-09
Recorder with stylus pressure control means
GB1417366A
(en)
1975-12-10
Support for a recording means in a tachograph
US4591881A
(en)
1986-05-27
Arm-deflecting system for recording apparatus
US3808535A
(en)
1974-04-30
Wide-chart display with small-span oscillographic recording instruments
GB749514A
(en)
1956-05-30
Apparatus for measuring and recording the magnitude of a variable condition
GB1417604A
(en)
1975-12-10
Recording device for tachographs
US2996647A
(en)
1961-08-15
Positioning servo-motor means
Legal Events
Date
Code
Title
Description
1975-06-25
PS
Patent sealed
1980-09-24
PCNP
Patent ceased through non-payment of renewal fee
