Brakes – Internal-resistance motion retarder – Resistance alters relative to direction of thrust member
Patent
1999-03-16
2000-12-19
Graham, Matthew C.
Brakes
Internal-resistance motion retarder
Resistance alters relative to direction of thrust member
188298, 1882875, 188297, 18832715, F16F 950
Patent
active
061616621
ABSTRACT:
A monotube suspension damper including a cylinder tube having a fluid chamber and a gas chamber, a piston dividing the fluid chamber into a compression chamber and a rebound chamber, a primary fluid flow path across the piston including flow control valves which throttle fluid flow, a secondary fluid flow path across the piston parallel to the primary flow path including flow control valves which throttle fluid flow, and a tubular connecting rod on the cylinder tube connected to the piston. A valve spool is supported on the piston for linear translation between closed and open positions blocking and unblocking the secondary flow path. A control rod inside of the connecting rod is disposed between the valve spool and a flexible diaphragm exposed to pneumatic pressure in an expansible load leveling chamber between sprung and unsprung masses of the motor vehicle. As the pneumatic pressure in the expansible chamber varies, the control rod transfers flexure of the diaphragm to the valve spool to close the secondary flow path and increase the stiffness of the suspension damper as pneumatic pressure increases and to open the secondary flow path and decrease the stiffness of the suspension damper as pneumatic pressure decreases.
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Johnston Gary Lee
Kruckemeyer William Charles
Longhouse Richard Edward
Mills Donelle Robert
Oliver Michael Leslie
Delphi Technologies Inc.
Graham Matthew C.
Kramer Devon
Sigler Robert M.
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