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FR2454382A1 - Pressure sensing switch for pneumatic tyre - has diaphragm moving switch contacts if pressure falls, to initiate oPeration of warning signal generator - Google Patents

Pressure sensing switch for pneumatic tyre - has diaphragm moving switch contacts if pressure falls, to initiate oPeration of warning signal generator

Info

Publication number
FR2454382A1
FR2454382A1 FR7909664A FR7909664A FR2454382A1 FR 2454382 A1 FR2454382 A1 FR 2454382A1 FR 7909664 A FR7909664 A FR 7909664A FR 7909664 A FR7909664 A FR 7909664A FR 2454382 A1 FR2454382 A1 FR 2454382A1
Authority
FR
France
Prior art keywords
pressure
membrane
signal generator
warning signal
contacts
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.)
Withdrawn
Application number
FR7909664A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7909664A priority Critical patent/FR2454382A1/en
Publication of FR2454382A1 publication Critical patent/FR2454382A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/041—Means for supplying power to the signal- transmitting means on the wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

The pressure detector includes a plastics cylinder (103) containing compressed gas which is introduced through a small hole (116) during manufacture. The hole is then filled with suitable cement. The opposite end of the cylinder is closed with an impermeable membrane (105) of rubber or silicon attached by a ring (104) with screws (115). A cross (104a) formed across the centre of the ring prevents excessive flexing of the membrane. A lever (106) pivoting about an axis (111) resting against the membrane controls the relative movement of the contact surfaces (109,110). The circuit including the contacts is normally closed, the pressure in the tyre being sufficient to press the membrane inwards. If however the tyre pressure falls below an acceptable level, the diaphragm moves outwards and the contacts separate operating a warning signal generator.
FR7909664A 1979-04-17 1979-04-17 Pressure sensing switch for pneumatic tyre - has diaphragm moving switch contacts if pressure falls, to initiate oPeration of warning signal generator Withdrawn FR2454382A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7909664A FR2454382A1 (en) 1979-04-17 1979-04-17 Pressure sensing switch for pneumatic tyre - has diaphragm moving switch contacts if pressure falls, to initiate oPeration of warning signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7909664A FR2454382A1 (en) 1979-04-17 1979-04-17 Pressure sensing switch for pneumatic tyre - has diaphragm moving switch contacts if pressure falls, to initiate oPeration of warning signal generator

Publications (1)

Publication Number Publication Date
FR2454382A1 true FR2454382A1 (en) 1980-11-14

Family

ID=9224387

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909664A Withdrawn FR2454382A1 (en) 1979-04-17 1979-04-17 Pressure sensing switch for pneumatic tyre - has diaphragm moving switch contacts if pressure falls, to initiate oPeration of warning signal generator

Country Status (1)

Country Link
FR (1) FR2454382A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529513A1 (en) * 1982-07-05 1984-01-06 Labinal DEVICE FOR MEASURING A PARAMETER IN A TIRE ON A WHEEL, IN PARTICULAR A MOTOR VEHICLE
EP0108176A1 (en) * 1982-11-05 1984-05-16 Philip Elliot Galasko Detection of a low pressure condition of a pneumatic vehicle tyre
EP1223057A3 (en) * 2001-01-11 2003-07-16 The Yokohama Rubber Co., Ltd. Transponder, interrogator and system thereof
US20180079265A1 (en) * 2015-04-07 2018-03-22 Bridgestone Americas Tire Operations, Llc Internal tire windmill energy harvester

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529513A1 (en) * 1982-07-05 1984-01-06 Labinal DEVICE FOR MEASURING A PARAMETER IN A TIRE ON A WHEEL, IN PARTICULAR A MOTOR VEHICLE
EP0108176A1 (en) * 1982-11-05 1984-05-16 Philip Elliot Galasko Detection of a low pressure condition of a pneumatic vehicle tyre
EP1223057A3 (en) * 2001-01-11 2003-07-16 The Yokohama Rubber Co., Ltd. Transponder, interrogator and system thereof
US20180079265A1 (en) * 2015-04-07 2018-03-22 Bridgestone Americas Tire Operations, Llc Internal tire windmill energy harvester

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Legal Events

Date Code Title Description
ST Notification of lapse