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1. (WO1987003547) DETECTOR OF THE INFLATION PRESSURE OF MOTOR VEHICLE TYRES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1987/003547 International Application No.: PCT/DE1986/000446
Publication Date: 18.06.1987 International Filing Date: 05.11.1986
IPC:
B60C 23/04 (2006.01) ,H01H 35/26 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
23
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, of tanks; Tyre cooling arrangements
02
Signalling devices actuated by tyre pressure
04
mounted on the wheel or tyre
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
35
Switches operated by change of a physical condition
24
Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
26
Details
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 50 D-7000 Stuttgart 1, DE (AllExceptUS)
HAAS, Lothar [DE/DE]; DE (UsOnly)
HETTICH, Gerhard [DE/DE]; DE (UsOnly)
SCHMID, Hans-Dieter [DE/DE]; DE (UsOnly)
Inventors:
HAAS, Lothar; DE
HETTICH, Gerhard; DE
SCHMID, Hans-Dieter; DE
Priority Data:
P 35 43 866.512.12.1985DE
Title (EN) DETECTOR OF THE INFLATION PRESSURE OF MOTOR VEHICLE TYRES
(FR) DETECTEUR DE LA PRESSION DES PNEUS D'UN VEHICULE
Abstract:
(EN) A detector (13) of the inflation pressure of motor vehicle tyres comprises a manometric switch activated by the tyre pressure in order to monitor said pressure. The manometric switch comprises a reference pressure chamber (21) isolated from the tyre by an electrically conductive diaphragm (29) a contact pin (30) which is touched by the middle area of the diaphragm when the tyre pressure is sufficient, closing an electric circuit. In order to trigger an alarm signal when the reference pressure chamber (21) presents a leak, the presence of leaks in the reference chamber (21) is determined in that the contact pin (30) and the middle area of the diaphragm (29) are separated by an air gap when the pressure on both sides of the diaphragm (29) is equal.
(FR) Un détecteur (13) de la pression des pneus d'un véhicule comprend, pour contrôler la pression des pneus, un interrupteur manométrique actionné par la pression des pneus. L'interrupteur manométrique comprend une chambre de pression de référence (21) isolée du pneu par une membrane (29) électriquement conductrice et portant une fiche de contact (30) que touche la région centrale de la membrane lorsque la pression à l'intérieur du pneu est suffisante, en fermant un circuit électrique. Afin de déclencher un signal d'alarme lors de fuites de la chambre de pression de référence , un contrôle des fuites de la chambre de pression de référence (21) est automatiquement effectué, en ce sens que lorsque la pression est égale des deux côtés de la membrane (29), un espace sépare la fiche de contact (30) et la région centrale de la membrane (29).
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0248821US4783993