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FR2250452A5 - Switch circuit for vehicle tyre warning system - two pairs of coils produce output when deflation causes them to approach - Google Patents

Switch circuit for vehicle tyre warning system - two pairs of coils produce output when deflation causes them to approach

Info

Publication number
FR2250452A5
FR2250452A5 FR7339588A FR7339588A FR2250452A5 FR 2250452 A5 FR2250452 A5 FR 2250452A5 FR 7339588 A FR7339588 A FR 7339588A FR 7339588 A FR7339588 A FR 7339588A FR 2250452 A5 FR2250452 A5 FR 2250452A5
Authority
FR
France
Prior art keywords
pairs
approach
pair
switch circuit
warning system
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
FR7339588A
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.)
Jaeger SA
Original Assignee
Jaeger SA
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 Jaeger SA filed Critical Jaeger SA
Priority to FR7339588A priority Critical patent/FR2250452A5/en
Priority to BE150038A priority patent/BE821661A/en
Priority to US05/519,271 priority patent/US3990041A/en
Priority to IT9614/74A priority patent/IT1023784B/en
Priority to CA213,161A priority patent/CA1052456A/en
Priority to JP49127904A priority patent/JPS5080856A/ja
Priority to GB48003/74A priority patent/GB1495148A/en
Priority to GB3157877A priority patent/GB1495149A/en
Priority to DE2452732A priority patent/DE2452732C3/en
Priority to NL7414506A priority patent/NL7414506A/en
Application granted granted Critical
Publication of FR2250452A5 publication Critical patent/FR2250452A5/en
Priority to US05/714,283 priority patent/US4057783A/en
Priority to CA315,914A priority patent/CA1065441A/en
Expired 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
    • B60C23/0427—Near field transmission with inductive or capacitive coupling means
    • B60C23/043—Near field transmission with inductive or capacitive coupling means using transformer type signal transducers, e.g. rotary transformers
    • 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
    • B60C23/0427—Near field transmission with inductive or capacitive coupling means
    • B60C23/0428—Near field transmission with inductive or capacitive coupling means using passive wheel mounted resonance circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The contacts are associated with a pair of coils (in series when the contacts are closed). A second pair of coils are each magnetically coupled with one of the first two. There is a means of excitation making the first coil of the second pair produce an alternating field. This is passed to the second coil of the second pair when that coil is excited only by the field of the first coil of the second pair and when the second coil of the second pair is excited by the second coil of the first pair. The output signal is then used to warn the driver.
FR7339588A 1973-11-07 1973-11-07 Switch circuit for vehicle tyre warning system - two pairs of coils produce output when deflation causes them to approach Expired FR2250452A5 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
FR7339588A FR2250452A5 (en) 1973-11-07 1973-11-07 Switch circuit for vehicle tyre warning system - two pairs of coils produce output when deflation causes them to approach
BE150038A BE821661A (en) 1973-11-07 1974-10-30 DEVICE FOR TRANSMISSION OF THE STATE OF A SWITCH BETWEEN TWO MOVING PARTS RELATIVE TO ROTATION
US05/519,271 US3990041A (en) 1973-11-07 1974-10-30 Device for transmitting the condition of a switch between two parts in relative rotary movement
IT9614/74A IT1023784B (en) 1973-11-07 1974-10-31 DEVICE FOR TRANSMITTING THE CONDITION OF A SWITCH BETWEEN TWO MOVING PARTS RELATIVE POTATIO FOR SIGNALING THE PRESSURE OF TIRES AND MORE
JP49127904A JPS5080856A (en) 1973-11-07 1974-11-06
GB48003/74A GB1495148A (en) 1973-11-07 1974-11-06 Switch-condition-transmitting device
CA213,161A CA1052456A (en) 1973-11-07 1974-11-06 Device for transmitting the condition of a switch between two parts in relative rotary movement
GB3157877A GB1495149A (en) 1973-11-07 1974-11-06 Switch-condition-transmitting device
DE2452732A DE2452732C3 (en) 1973-11-07 1974-11-07 Device for determining whether a switch provided as a transducer is in the open or closed state
NL7414506A NL7414506A (en) 1973-11-07 1974-11-07 DEVICE FOR CHECKING THE POSITION OF A SWITCH LOCATED ON ONE OF TWO ROTATING PARTS.
US05/714,283 US4057783A (en) 1973-11-07 1976-08-13 Device for transmitting the condition of a switch between two parts in relative rotary movement
CA315,914A CA1065441A (en) 1973-11-07 1978-11-07 Device including detecting means comprising a phase comparator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7339588A FR2250452A5 (en) 1973-11-07 1973-11-07 Switch circuit for vehicle tyre warning system - two pairs of coils produce output when deflation causes them to approach

Publications (1)

Publication Number Publication Date
FR2250452A5 true FR2250452A5 (en) 1975-05-30

Family

ID=9127419

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7339588A Expired FR2250452A5 (en) 1973-11-07 1973-11-07 Switch circuit for vehicle tyre warning system - two pairs of coils produce output when deflation causes them to approach

Country Status (1)

Country Link
FR (1) FR2250452A5 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse