GB1204132A - Improvements in or relating to switches operable by fluid pressure - Google Patents

Improvements in or relating to switches operable by fluid pressure

Info

Publication number
GB1204132A
GB1204132A GB311367A GB311367A GB1204132A GB 1204132 A GB1204132 A GB 1204132A GB 311367 A GB311367 A GB 311367A GB 311367 A GB311367 A GB 311367A GB 1204132 A GB1204132 A GB 1204132A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
contact
cupro
staking
jan
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
GB311367A
Inventor
Willi Walter Bischoff
Albert Frederick Lacey
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB311367A priority Critical patent/GB1204132A/en
Publication of GB1204132A publication Critical patent/GB1204132A/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
    • H01H35/346—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm in which the movable contact is formed or directly supported by the diaphragm
    • 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
    • H01H35/265—Means for adjustment of "ON" or "OFF" operating pressure by adjustment of one of the co-operating contacts

Abstract

1,204,132. Fluid actuation of switches. SMITHS INDUSTRIES Ltd. 19 Jan., 1968 [20 Jan., 1967], No. 3113/67. Heading H1N. The fixed contact of a fluid-pressure diaphragm-type switch comprises a cupro-nickel hollow screw 13 adjustably positioned within the tubular steel inlet member 7. The central portion 19 of a corrugated cupro-nickel diaphragm 5 engages the end of contact 13 upon reduction of pressure in chamber 20. The inlet member 7 is secured to a circular dished plate 9 by outward staking at 8. An aluminium washer 10 provides a gas-tight seal. Insulating washers 6 and 11 separate plate 9 electrically from the diaphragm 5 and swaged steel casing 1, whieh latter is vented at 16 and carries a terminal tag 17. The contact 13 is frictionally retained in its adjusted position by means of a glass-filled nylon washer 14 having a hole eccentrically displaced and held in place by inward staking of the portion 8 over a steel ring 15. The diaphragm 5 has parallel grooves impressed at the centre 19 to prevent oscillation due to possible sealing action against the inlet in contact 13. The casing may have an insulating covering (not shown), moulded from P.V.C., for example, with an aperture about the vent 16 and terminal 17.
GB311367A 1967-01-20 1967-01-20 Improvements in or relating to switches operable by fluid pressure Expired GB1204132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB311367A GB1204132A (en) 1967-01-20 1967-01-20 Improvements in or relating to switches operable by fluid pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB311367A GB1204132A (en) 1967-01-20 1967-01-20 Improvements in or relating to switches operable by fluid pressure

Publications (1)

Publication Number Publication Date
GB1204132A true GB1204132A (en) 1970-09-03

Family

ID=9752166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB311367A Expired GB1204132A (en) 1967-01-20 1967-01-20 Improvements in or relating to switches operable by fluid pressure

Country Status (1)

Country Link
GB (1) GB1204132A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181831A (en) * 1977-06-22 1980-01-01 Stewart-Warner Corporation Tire deflation monitor
FR2458408A1 (en) * 1979-06-08 1981-01-02 Moto Meter Ag ELECTRICAL CONTACT DEVICE FOR MONITORING PRESSURE IN THE TIRE OF A MOTOR VEHICLE
US4620073A (en) * 1983-06-18 1986-10-28 Mitsubishi Denki Kabushiki Kaisha Pressure-responsive apparatus having hysteresis to prevent hunting
DE3841995C1 (en) * 1988-12-14 1990-06-13 Moto Meter Ag, 7250 Leonberg, De Pressure switch for monitoring the pressure in the tyre of a motor vehicle wheel
EP3613451A1 (en) * 2015-11-19 2020-02-26 KCI Licensing, Inc. Fluid management apparatus and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181831A (en) * 1977-06-22 1980-01-01 Stewart-Warner Corporation Tire deflation monitor
FR2458408A1 (en) * 1979-06-08 1981-01-02 Moto Meter Ag ELECTRICAL CONTACT DEVICE FOR MONITORING PRESSURE IN THE TIRE OF A MOTOR VEHICLE
US4620073A (en) * 1983-06-18 1986-10-28 Mitsubishi Denki Kabushiki Kaisha Pressure-responsive apparatus having hysteresis to prevent hunting
DE3841995C1 (en) * 1988-12-14 1990-06-13 Moto Meter Ag, 7250 Leonberg, De Pressure switch for monitoring the pressure in the tyre of a motor vehicle wheel
EP3613451A1 (en) * 2015-11-19 2020-02-26 KCI Licensing, Inc. Fluid management apparatus and method
US11253640B2 (en) 2015-11-19 2022-02-22 Kci Licensing, Inc. Fluid management apparatus and method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees