Expansible chamber devices – With cushioning means effective over a portion only of stroke
Patent
1993-07-02
1994-10-11
Denion, Thomas E.
Expansible chamber devices
With cushioning means effective over a portion only of stroke
92240, 18832218, F01B 1102
Patent
active
053536894
ABSTRACT:
An impact damping element is provided including an annular bumper portion and a seal portion surrounding the bumper portion for engaging an inner wall of a cylinder in sealing contact. The impact damping element is adapted to absorb the impact between a piston and the end of a cylinder wall. In one embodiment of the invention, a primary and a secondary bumper are provided wherein the primary bumper has a greater height than the secondary bumper such that the primary bumper absorbs an initial impact between the piston and the cylinder wall and the secondary bumper absorbs the remaining force to prevent direct contact between the piston and the cylinder wall. In an alternative embodiment of the invention, the bumper portion is formed to have different material characteristics than the seal portion whereby the bumper portion is particularly adapted to absorb impact energy and the seal portion is particularly adapted to exhibit low friction characteristics and have a high resistance to abrasion resulting from contact with the inner cylinder wall. The materials forming the seal portion and the bumper portion are preferably co-molded together such that the impact element is formed as an integral unit.
REFERENCES:
patent: 2981232 (1961-04-01), Peras
patent: 2984529 (1961-05-01), Dailey
patent: 3465650 (1969-09-01), Gluck
patent: 3807281 (1974-04-01), Perkins
patent: 3913460 (1975-10-01), Wright
patent: 3969045 (1976-07-01), Sakai et al.
patent: 3969986 (1976-07-01), Ohrberg
patent: 4050505 (1977-09-01), Kemper et al.
patent: 4145057 (1979-03-01), Wheeler
patent: 4441644 (1984-04-01), Farian
patent: 4521027 (1985-06-01), Marshall
patent: 4609135 (1986-09-01), Elliesen
patent: 4618154 (1986-10-01), Freudenthal
Bolt David J.
Herner Ray H.
Denion Thomas E.
Mosier Industries Inc.
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