Device for inflating vehicle tires

Details Device for inflating vehicle tires Device for inflating vehicle tires

2006-03-21

2006-03-21

Douglas, Steven O. (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Diverse fluid containing pressure filling systems involving...

Tire inflation

C417S233000, C152S418000

Reexamination Certificate

active

07013931

ABSTRACT:
A device is disclosed for pumping the tire of a vehicle while the vehicle is travelling. The device is mounted on the wheel axle and, apart from a hanging counterweight (226) which remains stationary, the entire device rotates with the axle and wheels. Tire pressure is sensed and, when below a predetermined level, a piston (22) moves axially to press a rotating clutch plate (260) against the stationary counterweight (226). The clutch plate (260) thus stops rotating. Part of a pump drive structure (216) stops rotating with the clutch plate (260). Relative rotation between this part of the pump drive structure and the remainder of the pump drive structure causes air to be pumped to the tire. When tire pressure has been restored the piston (22) moves back, the clutch plate (260) is released, and the pumping action ceases.

REFERENCES:
patent: 1571072 (1926-01-01), Talbert
patent: 1744405 (1930-01-01), McCord
patent: 5947696 (1999-09-01), Baumgarten
patent: 761 011 (1934-03-01), None

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