Fluid control apparatus

Fluid handling – Inflatable article – With pressure-responsive pressure-control means

Reexamination Certificate

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Details

C137S227000, C137S505250, C152S427000

Reexamination Certificate

active

06901944

ABSTRACT:
There is an apparatus for regulating air flow into a rim mounted pneumatic vehicle tire. The apparatus has an elongated valve housing1with an inlet end1A, an outlet end2and a central portion between the outlet and inlet. The outlet end includes a rim insertion portion3configured to fit into an aperture in the tire rim. There is a pistion8disposed within the housing. The piston includes a valve member19. A coil spring22acts between the housing and piston so that in use of the apparatus the piston is biased to a open position for passage of air into the tire and is movable against the spring bias under air pressure build-up in the tire to a closed position at which the valve member seals against a valve seat. The spring acts in tension and the piston and spring are located in the central portion of the housing clear of the rim insertion portion. The rim insertion portion is of a reduced size not obstructive to the mounting of the tire.

REFERENCES:
patent: 511706 (1893-12-01), Lamplugh et al.
patent: 1045330 (1912-11-01), Schweinert et al.
patent: 1405436 (1922-02-01), Pulverman
patent: 1479307 (1924-01-01), McAneny
patent: 1482947 (1924-02-01), Shorts
patent: 1724063 (1929-08-01), Anderson
patent: 1832114 (1931-11-01), Georgias
patent: 3911988 (1975-10-01), Richards
patent: 6293297 (2001-09-01), Maldonado et al.
patent: 2002/0157707 (2002-10-01), Sampson

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