Spring devices – Vehicle – Comprising compressible fluid
Patent
1979-06-11
1981-01-20
Kazenske, Edward R.
Spring devices
Vehicle
Comprising compressible fluid
188315, F16F 906
Patent
active
042458250
ABSTRACT:
An outer cylinder (18) is coaxially disposed around an inner cylinder (12). The lower ends of the cylinders (12), (18) are closed but communicate with each other and are mechanically connected to an axle of a wheeled vehicle. A piston (13) is sealingly slidable in the inner cylinder (12) and is connected via a piston rod (14) to a frame of the vehicle. The rod (14) extends upwardly through a rod guide (17) which closes the upper end of the inner cylinder (12). A seal (24) disposed above the rod guide (17) closes the upper end of the outer cylinder (18). The inner cylinder (12) and lower portion of the outer cylinder (18) are filled with liquid which damps movement of the piston (13) caused by irregularities in the road surface. The upper portion of the outer cylinder (18) is filled with compressed air. An annular check valve (63) is disposed in a passageway (56) leading from a space ( 26) between the rod guide (17) and seal (24) to the upper portion of the outer cylinder (18). The check valve (63) allows flow of liquid and entrained air from the upper portion of the outer cylinder (12) to the upper portion of the outer cylinder (18) but not in the reverse direction and comprises a base (63a) which is fittingly retained in a groove (17b) formed in an upper end of the rod guide (17). A resilient edge portion (63b) of the check valve (63) extends upwardly into sealing engagement with a spring seat (62) which engages with a lower end of the seal (24). A compression spring (64) disposed between the spring seat (62) and base portion (63a) of the check valve (63) presses the spring seat (62) against the seal (24) and presses the base portion (63a) of the valve (63) against the rod guide (16).
REFERENCES:
patent: 3378110 (1968-04-01), Parrish
patent: 3513947 (1970-05-01), Duckett
Higuti Siniti
Hiroi Sumio
Inoue Hisao
Ohtomo Masaru
Alexander David G.
Kayaba Kogyo Kabushiki Kaisha
Kazenske Edward R.
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