GB1089516A - Pressure actuated switch and an indicator circuit incorporating the switch - Google Patents

Pressure actuated switch and an indicator circuit incorporating the switch

Info

Publication number
GB1089516A
GB1089516A GB686064A GB686064A GB1089516A GB 1089516 A GB1089516 A GB 1089516A GB 686064 A GB686064 A GB 686064A GB 686064 A GB686064 A GB 686064A GB 1089516 A GB1089516 A GB 1089516A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
switch
opening
stud
movable contact
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
GB686064A
Inventor
Ronald Arthur Ernest Morgan
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.)
General Motors Ltd
Original Assignee
General Motors 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.)
Filing date
Publication date
Application filed by General Motors Ltd filed Critical General Motors Ltd
Priority to GB686064A priority Critical patent/GB1089516A/en
Publication of GB1089516A publication Critical patent/GB1089516A/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
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm

Landscapes

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

Abstract

1,089,516. Fluid actuation of switches. GENERAL MOTORS Ltd. Feb. 5, 1965 [Feb. 19, 1964], No. 6860/64. Heading H2B. A pressure responsive switch has a member 9 mounted on a flexible diaphragm 3 and carrying a movable contact (12) adapted, on movement of the diaphragm 3 in response to a predetermined pressure differential thereacross, to engage the movable contact (12) with a fixed contact 6 and to be itself engaged with a member 1 of the switch so as to prevent return of the diaphragm 3 to its normal condition until manually reset. Member 9 is a stud secured on diaphragm 3 by retainer 8 and carrying at its inner end movable contact (12) which is a small helical spring. Stud 9 is coaxial with diaphragm 3 and housing members 1, 2, has an annular groove (11) and projects through an opening 10 in member 1 which opening is offset from the axis of the housing members 1 and 2 such that on movement of the diaphragm to close the contacts the annular groove (11) is engaged with the edge of opening 10 so that the stud is retained in this position until manually reset. The switch is intended for use in a filter system to indicate when the filter is clogged, a suitable circuit diagram, Fig. 3 (not shown), being provided.
GB686064A 1964-02-18 1964-02-18 Pressure actuated switch and an indicator circuit incorporating the switch Expired GB1089516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB686064A GB1089516A (en) 1964-02-18 1964-02-18 Pressure actuated switch and an indicator circuit incorporating the switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB686064A GB1089516A (en) 1964-02-18 1964-02-18 Pressure actuated switch and an indicator circuit incorporating the switch

Publications (1)

Publication Number Publication Date
GB1089516A true GB1089516A (en) 1967-11-01

Family

ID=9822086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB686064A Expired GB1089516A (en) 1964-02-18 1964-02-18 Pressure actuated switch and an indicator circuit incorporating the switch

Country Status (1)

Country Link
GB (1) GB1089516A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941958A (en) * 1974-08-09 1976-03-02 Caterpillar Tractor Co. Filter bypass indicator
US4035165A (en) * 1974-10-02 1977-07-12 Wahlco, Inc. Rapper monitor
USRE30663E (en) 1973-06-28 1981-06-30 Stabilus Gmbh Electrically conductive pneumatic spring with door actuated switch means
US5050634A (en) * 1990-12-28 1991-09-24 Hasstech, Inc. Very low differential pressure switch
US5351035A (en) * 1993-02-22 1994-09-27 Ben A. Everson Clogged filter indicator
US7219070B2 (en) * 2001-10-24 2007-05-15 Ge Mortgage Holdings, Llc Methods and apparatus for presenting offers to qualified consumers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30663E (en) 1973-06-28 1981-06-30 Stabilus Gmbh Electrically conductive pneumatic spring with door actuated switch means
US3941958A (en) * 1974-08-09 1976-03-02 Caterpillar Tractor Co. Filter bypass indicator
US4035165A (en) * 1974-10-02 1977-07-12 Wahlco, Inc. Rapper monitor
US5050634A (en) * 1990-12-28 1991-09-24 Hasstech, Inc. Very low differential pressure switch
US5351035A (en) * 1993-02-22 1994-09-27 Ben A. Everson Clogged filter indicator
US7219070B2 (en) * 2001-10-24 2007-05-15 Ge Mortgage Holdings, Llc Methods and apparatus for presenting offers to qualified consumers

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