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US 4,352,487 AGranted
Viscous spring damper
AssigneeGould Inc.
InventorEmile M. Shtarkman
Life of this patent
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AssigneeGould Inc.
InventorEmile M. Shtarkman
Estimating the term…
A viscous spring damper including inner and outer members connected by an elastomeric shear spring and having a main or first fluid chamber disposed therebetween for communication with a second fluid chamber in the inner member through a restricted orifice. The inner and outer members are relatively movable for stressing the shear spring and varying the volumes of the chambers while fluid is transferred therebetween through the restricted orifice. An elastomeric bladder within the second fluid chamber is selectively chargeable with gas pressure for calibrating the damping characteristics, varying the initial spring rate or leveling a vehicle on which the damper is installed. An elastomeric diaphragm is included in the main fluid chamber for providing a selectively chargeable diaphragm gas chamber. Integrally formed wear ribs in the diaphragm minimize diaphragm abrasion effects at points of engagement between the diaphragm and the inner member and preclude an hydraulic lock between the diaphragm and the inner member.
In a viscous spring damper including inner and outer members connected by an elastomeric shear spring, having a main fluid chamber therebetween communicating with a second chamber in said inner member through restricted orifice means, and having an expandible and contractible gas chargeable elastomeric bladder in said second chamber, and a first valve means for selectively charging said bladder with gas pressure, the improvement comprising:
In a viscous spring damper including inner and outer members connected by an elastomeric shear spring, having a main fluid chamber therebetween communicating with a second chamber in said inner member through restricted orifice means, and having an expandible and contractible gas chargeable elastomeric bladder in said second chamber, and a first valve means for selectively charging said bladder with gas pressure, the improvement comprising:
Dependencies are inferred from the claim text.