Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1989000511) TYRE PRESSURE SENSOR FOR MOTOR VEHICLES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000511 International Application No.: PCT/DE1988/000241
Publication Date: 26.01.1989 International Filing Date: 22.04.1988
Chapter 2 Demand Filed: 16.02.1989
IPC:
B60C 23/04 (2006.01) ,G01L 9/00 (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
G PHYSICS
01
MEASURING; TESTING
L
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
9
Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 10 60 50 D-7000 Stuttgart 10, DE (AllExceptUS)
BURKARD, Johannes [DE/DE]; DE (UsOnly)
HETTICH, Gerhard [DE/DE]; DE (UsOnly)
SCHMID, Hans-Dieter [DE/DE]; DE (UsOnly)
Inventors:
BURKARD, Johannes; DE
HETTICH, Gerhard; DE
SCHMID, Hans-Dieter; DE
Priority Data:
P 37 23 510.916.07.1987DE
Title (EN) TYRE PRESSURE SENSOR FOR MOTOR VEHICLES
(FR) DETECTEUR DE PRESSION DE PNEUS POUR VEHICULES A MOTEUR
Abstract:
(EN) A tyre pressure sensor for motor vehicles is inserted in the rim (12) of one of the wheels of the vehicle. The sensor has a reference pressure chamber (18) which is closed on the side nearest the tyre by an electrically conductive membrane (20) and which co-operates with an insulated contact pin (22) inserted centrally through the floor of the reference pressure chamber (18) and with an oscillating circuit connected to the contact pin (22). In order to detect a deformation of the membrane due to damage caused when the tyres are mounted as well as two or more different threshold values of the tyre pressure, in addition to the central contact pin (22) at least one additional insulated contact body (34) is inserted through the floor (19a) of the reference pressure chamber. On further deflection of the membrane, the additional contact body (34) touches the contact pin (22) thereby closing a second circuit.
(FR) Un détecteur de pression de pneus pour véhicules à moteur est introduit dans la jante (12) de l'une des roues du véhicule. Le détecteur comprend une chambre de pression de référence (18) qui est fermée sur le côté le plus proche du pneu par une membrane électroconductrice (20) et qui coopère avec une broche de contact isolée (22) introduite au centre à travers le plancher de la chambre de pression de référence (18) et avec un circuit oscillant connecté à la broche de contact (22). Afin de détecter une déformation de la membrane due à un dommage causé lors du montage du pneu ainsi qu'au moins deux valeurs seuils différentes de la pression du pneu, on introduit en plus de la broche de contact centrale (22) au moins un corps de contact isolé supplémentaire (34) dans le plancher (19a) de la chambre de pression de référence. Lors d'une déformation supplémentaire de la membrane, le corps de contact supplémentaire (34) touche la broche de contact (22), fermant ainsi un second circuit.
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:
EP0371966ES2007963US5035137