Hydraulic shock absorber with progressive braking effect
OwnerMauro Corradini, Eric Frantz Regnierinventors
Life of this patent
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Abstract
An hydraulic shock absorber with progressive braking effect comprising a cylinder (1,2) full of fluid and a piston (3) sliding axially into said cylinder. The piston (3) divides into two sequential chambers (8) and (9) the cylinder compartment (1). In the extension and/or compression operation, the piston (3) slides in the cylinder causing the fluid to move from the lower chamber (9) to the upper chamber (8) and viceversa, through ports (10) and compression (16) and extension (12) valves, with regulated and progressive opening/closing, with passages with calibrated and/or variable geometry.
Claims8
A hydraulic shock absorber with progressive braking effect comprising:
- a cylinder anchored to the body of a vehicle and filled with a driving fluid;
- a piston anchored to a mobile component of a suspension and sliding axially into said cylinder, said piston dividing the cylinder into sequential coaxial upper and lower chambers and being provided with a central opening connecting said upper chamber to said lower chamber;
- a cone-shaped stationary pin fixed to the cylinder and sliding into the central opening of the piston;
- a compression valve and an extension valve each connected to the upper and lower chambers and provided with a variable elastic load and with a through port with calibrated section passages having a lower end with progressively increasing passage areas;
- and
- an additional bypass valve with instantaneous closing/opening, depending on the impact effect of instantaneous changes in the displacement speed of piston of the shock absorber, said bypass valve being interposed between the cylinder and said compression and extension valves,
- wherein the bypass valve is provided with a piston with an adjustable opening/closing tripping pawl with elastic quick return means.
Dependencies are inferred from the claim text.