Rotary valve seal

Details Rotary valve seal Rotary valve seal

2006-11-14

2006-11-14

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Valve

Rotary

C251S314000

Reexamination Certificate

active

07134416

ABSTRACT:
The invention relates to a valve seal mechanism for a rotatable valve assembly that provides a sealing function between a rotating first valve element and a fixed second valve element as used in a rotary cylinder valve engine. In one embodiment the seal mechansim comprises a substantially rigid sealing frame which surrounds and sealingly engages the periphery of the valve port of one of the cyclindrical valve elements and also sealingly engages a surface of the other cylindrical valve element. In another embodiment, the seal mechanism comprises a resiliently deflectable tubular element of variable diameter, the tubular element being mounted around a first valve element with an aperture of the tubular element being radially aligned with a valve port of the first valve element, the tubular element being biased radially outward of the first valve element.

REFERENCES:
patent: 1442523 (1923-01-01), Goby
patent: 2273179 (1942-02-01), Davison
patent: 4019487 (1977-04-01), Guenther
patent: 5474036 (1995-12-01), Hansen et al.
patent: 83185 (1920-04-01), None
patent: 85169 (1920-05-01), None
patent: 9209896 (1992-11-01), None
patent: 10034679 (2002-01-01), None

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