Externally adjustable dampening control for a shock absorber

Details Externally adjustable dampening control for a shock absorber Externally adjustable dampening control for a shock absorber

1997-11-19

2000-09-05

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

1883222, 1883192, F16F 900

Patent

active

061128686

ABSTRACT:
An externally adjustable dampening control for a shock absorber provides the ability to adjust the hardness and softness of the ride near the normal curb/ride height, and still give strong resistance, and hence control, when the piston moves beyond the intermediate region. The adjustable dampening control includes a bypass for permitting fluid to bypass the piston when the piston is within an intermediate region of the cylinder corresponding to the normal curb/ride height of the shock. The bypass includes a valve body extending longitudinally along a portion of the hollow cylinder and defining a flow passage having first and second longitudinally spaced ports opening to cylinder and defining a flow passage having first and second longitudinally spaced ports opening to the internal chamber. Resistance to piston movement can be adjusted by rotating a knob to move a second piston into and out of the flow passage, thereby adjusting the amount of fluid that can flow through the bypass flow passage.

REFERENCES:
patent: 1560477 (1925-11-01), Kessler
patent: 3107753 (1963-10-01), Georgette
patent: 4310077 (1982-01-01), Whiteside
patent: 5392885 (1995-02-01), Patzenhauer et al.
patent: 5533596 (1996-07-01), Patzenhauer et al.

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