Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1994-01-27
1995-03-28
Graham, Matthew C.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
18832111, 267218, 267 6428, 280710, F16F 908
Patent
active
054008808
ABSTRACT:
A bi-linear platform reactive damper for automotive type vehicles, which includes a damper housing having a chamber with a damper piston in it, which piston has a rod extending from it connected to the suspension of the vehicle, which chamber is filled with hydraulic fluid, the chamber being connected to an external reservoir containing a separator piston, with gas on the side of the piston opposite to the hydraulic fluid, and having an adjustable separator piston stop. The damper housing has a secondary chamber which is in fluid communication with said damper chamber. A movable spring platform is provided, externally mounted to the damper chamber and engaged with said secondary chamber, with a chassis spring mounted between the suspension of an automotive vehicle and engaging the platform, so that upon displacement of the suspension, the rod causes the damper piston to displace hydraulic fluid into the reservoir which causes the separator piston to bottom against the stop which acts to provide a predetermined spring rate for the fluid to work against. Further displacement of the damper piston causes fluid to displace the spring platform compressing the spring increasing the reactive force whereby overall suspension movement is reduced.
REFERENCES:
patent: 4616810 (1986-10-01), Richardson et al.
patent: 4858898 (1989-08-01), Niikura et al.
patent: 5058868 (1991-10-01), Sirven
patent: 5094325 (1992-03-01), Smith
Competition Tire East
Graham Matthew C.
Wobensmith, III Zachary T.
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