[go: up one dir, main page]

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
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.)
Filing date
Publication date
Application filed by Foxboro Co filed Critical Foxboro Co
Publication of GB1383476A publication Critical patent/GB1383476A/en
Expired legal-status Critical Current

Links

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
    • F03G7/061—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 characterised by the actuating element
    • F03G7/0614—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 characterised by the actuating element using shape memory elements
    • F03G7/06143—Wires
    • 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
    • F03G7/064—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 characterised by its use
    • F03G7/0641—Motors; Energy harvesting or waste energy recovery
    • 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
    • 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
    • F03G7/066—Actuator control or monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Recording Measured Values (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Feedback Control In General (AREA)
  • Control Of Position Or Direction (AREA)
  • Rehabilitation Tools (AREA)

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 (2)

* 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
CN117189808A (en) * 2023-07-17 2023-12-08 中山大学 Metamaterial rods that only output stretching waves and their applications

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 Industrial Co Ltd Saabokairo
US4197709A (en) * 1978-06-09 1980-04-15 Hochstein Peter A Thermal energy scavenger (stress limiter)
US4197708A (en) * 1978-06-09 1980-04-15 Hochstein Peter A Thermal energy scavenger (alternating stress limiters)
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
JPS6053676A (en) * 1983-09-01 1985-03-27 Furukawa Electric Co Ltd:The Crank swinging apparatus
DE3432134A1 (en) * 1983-09-01 1985-03-21 The Furukawa Electric Co., Ltd., Tokio/Tokyo DEVICE FOR SWIVELING A CONTROL LEVER
JPS61178565A (en) * 1985-02-04 1986-08-11 Tokieda Naomitsu Actuator made of shape memory alloy

Cited By (2)

* 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
CN117189808A (en) * 2023-07-17 2023-12-08 中山大学 Metamaterial rods that only output stretching waves and their applications

Also Published As

Publication number Publication date
NL7304478A (en) 1973-10-02
IT980042B (en) 1974-09-30
AR199288A1 (en) 1974-08-23
DE2313240C3 (en) 1979-06-13
FR2178941A1 (en) 1973-11-16
FR2178941B1 (en) 1976-09-10
JPS497683A (en) 1974-01-23
DE2313240B2 (en) 1978-10-12
DE2313240A1 (en) 1973-10-11
CA984901A (en) 1976-03-02

Similar Documents

Publication Publication Date Title
GB1383476A (en) Positioning device using negative spring-rate tensioning means
US2136223A (en) Torsion indicator
US3132916A (en) Combined speed and idling recorder for automotive vehicles and the like
US2466691A (en) Electromagnetic oscillograph
US3441943A (en) Locomotive recording system
GB1365406A (en) Servo apparatus
US2370194A (en) Static earth inductor compass
GB1146836A (en) Torque measuring devices
US3233245A (en) Folded trace for recorders
US3034126A (en) Recording instrument
US2958027A (en) Velocity servo for graphical recorder time base generator
US1285919A (en) Recording instrument.
GB1476583A (en) Fine focus assembly
US3099161A (en) Bimetal coil for use in temperature recorders
US3319259A (en) Recorder with stylus pressure control means
US2159333A (en) Electric speedometer
GB1417366A (en) Support for a recording means in a tachograph
US4591881A (en) Arm-deflecting system for recording apparatus
US3808535A (en) Wide-chart display with small-span oscillographic recording instruments
GB1236351A (en) Apparatus for setting a speed dependent switching operation in course-recorders
GB749514A (en) Apparatus for measuring and recording the magnitude of a variable condition
US2996647A (en) Positioning servo-motor means
US1077637A (en) Horse-power recorder.
GB1095150A (en) Improvements in or relating to indicating means
SU378942A1 (en) MEMORY DEVICE

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee