Cylinder type air damper

Details Cylinder type air damper Cylinder type air damper

1989-10-13

1992-04-14

Graham, Matthew C.

Spring devices

Vehicle

Comprising compressible fluid

267123, 18832215, F16F 906

Patent

active

051040980

ABSTRACT:
A cylinder type air damper includes a cylinder having at least one rib projecting radially inwardly and extending in the axial direction, a piston inserted for reciprocation within the cylinder and axially dividing the interior of the cylinder into a front compartment and a rear compartment. An exhaust hole axially penetrates the piston and is provided with a valve for blocking the exchange of air between the two compartments in response to an axial movement of the piston in one direction. An orifice also axially penetrates the piston within an area thereof subject to blocking by means of the valve for permitting the exchange of air between the two compartments in response to the axial movement of the piston. A vent duct communicates at one end with the orifice and is open at the other end within an area other than the area subject to blocking by means of the valve.

REFERENCES:
patent: 3837445 (1974-09-01), Pierle
patent: 4079750 (1978-03-01), Ludwig
patent: 4323224 (1982-04-01), Freitag et al.
patent: 4352417 (1982-10-01), Stinson
patent: 4484669 (1984-11-01), Kato
patent: 4503951 (1985-03-01), Imaizumi
patent: 4569803 (1986-02-01), Takakura et al.
patent: 4735402 (1988-04-01), Davis

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