Tire pressure management actuator with bypass leakage prevention

Details Tire pressure management actuator with bypass leakage prevention Tire pressure management actuator with bypass leakage prevention

1991-08-02

1992-03-10

Rivell, John

Fluid handling

Inflatable article

With pressure-responsive pressure-control means

251 634, 251 636, 152416, 152427, B60C 2300, F16K 1520, F16K 31363

Patent

active

050942638

ABSTRACT:
A piston type TPM actuator valve has enough clearance between the piston and the wall of the cylindrical passage that it slides to prevent sticking, but still avoids excessive bypass leakage through the same clearance. A plug located in the passage between the piston and the check valve has a vent to atmosphere that prevents leaking air from compressing behind the advancing piston. The plug also carries a seal that is compressed when the piston bottoms out to prevent further venting.

REFERENCES:
patent: 2489397 (1949-11-01), Brummer
patent: 2685906 (1954-08-01), Williams
patent: 2976906 (1961-03-01), Kamm et al.
patent: 3249144 (1966-05-01), Dobrikin
patent: 4932451 (1990-06-01), Williams et al.
patent: 4938272 (1990-07-01), Sandy, Jr. et al.

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