GB1014760A - pneumatic-pressure-responsive electric switch - Google Patents

pneumatic-pressure-responsive electric switch

Info

Publication number
GB1014760A
GB1014760A GB17422/63A GB1742263A GB1014760A GB 1014760 A GB1014760 A GB 1014760A GB 17422/63 A GB17422/63 A GB 17422/63A GB 1742263 A GB1742263 A GB 1742263A GB 1014760 A GB1014760 A GB 1014760A
Authority
GB
United Kingdom
Prior art keywords
lever
pressure
switch
diaphragm
springs
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
GB17422/63A
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.)
Robertshaw Controls Co
Original Assignee
Robertshaw Controls 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 Robertshaw Controls Co filed Critical Robertshaw Controls Co
Publication of GB1014760A publication Critical patent/GB1014760A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

1,014,760. Fluid actuation of switches. ROBERTSHAW CONTROLS CO. May 2 1963 [May 25, 1962], No. 17422/63. Heading H2B. In a pneumatic-pressure operated electric switch comprising a diaphragm 26 with a link 36 transmitting movement to a lever 52, pivoted at 56 and having a detent 62 operating a switch 10, a second lever 54, also pivoted at 56 has a limit stop 72, depending therefrom, which engages lever 52 after a predetermined minimum pressure has been applied to the diaphragm. Springs 96, 98 engaging levers 52, 54 respectively, are compressed by end plates 100, 102 mounted on adjustable screws 108, 106 to provide an operating differential for the switch. In operation, as pressure increases, link 36 pushes against lever 52 which is acted on by both springs 96, 98 after lever 52 engages stop 72 until the pressure reaches a predetermined value, when the lever 52 pivots sufficiently to operate switch 10. As the pressure decreases, springs 96, 98 force levers 52, 54 clockwise until a stud 76 on lever 54 engages an adjustable stop 78 and when the pressure acting on the diaphragm is less than the force of spring 96, the lever 52 pivots and operates the switch in the other direction. A levelling screw 44 is provided.
GB17422/63A 1962-05-25 1963-05-02 pneumatic-pressure-responsive electric switch Expired GB1014760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US197730A US3182150A (en) 1962-05-25 1962-05-25 Pneumatic-electric switch

Publications (1)

Publication Number Publication Date
GB1014760A true GB1014760A (en) 1965-12-31

Family

ID=22730525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17422/63A Expired GB1014760A (en) 1962-05-25 1963-05-02 pneumatic-pressure-responsive electric switch

Country Status (2)

Country Link
US (1) US3182150A (en)
GB (1) GB1014760A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300522A (en) * 1995-05-03 1996-11-06 Amot Controls Ltd Switching mechanism with adjustable bias
GB2318454A (en) * 1996-10-19 1998-04-22 Amot Controls Ltd Adjustable switching mechanism

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247336A (en) * 1963-07-25 1966-04-19 Pennwood Numechron Company Electric timer
US3447390A (en) * 1966-12-06 1969-06-03 Robertshaw Controls Co Negating spring construction for a pressure regulator and the like
US3786212A (en) * 1971-05-31 1974-01-15 E Weber Condition responsive control device with capacity for independent adjustment of control points
US3700839A (en) * 1971-06-28 1972-10-24 Sangamo Electric Co Watthour meter indicator with improved cam and microswitch operator structure
US4245142A (en) * 1977-02-07 1981-01-13 Robertshaw Controls Company Control unit and electrical switch construction therefor and methods of making such a control unit and electrical switch construction
US4314122A (en) * 1977-02-07 1982-02-02 Robertshaw Controls Company Control unit and electrical switch construction therefor and methods of making such a control unit and electrical switch construction
US4345369A (en) * 1980-02-11 1982-08-24 Robertshaw Controls Company Control unit and electrical switch construction therefor--methods of making such a control unit and electrical switch construction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447894A (en) * 1944-08-30 1948-08-24 Philco Corp Electric refrigerator alarm system
US2389436A (en) * 1944-11-17 1945-11-20 Penn Electric Switch Co Differential widening means for control structures
US2480538A (en) * 1948-06-22 1949-08-30 Gen Electric Thermal switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300522A (en) * 1995-05-03 1996-11-06 Amot Controls Ltd Switching mechanism with adjustable bias
GB2318454A (en) * 1996-10-19 1998-04-22 Amot Controls Ltd Adjustable switching mechanism
GB2318454B (en) * 1996-10-19 2000-01-12 Amot Controls Ltd Adjustable switching mechanism

Also Published As

Publication number Publication date
US3182150A (en) 1965-05-04

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