Vibration absorbing damper

Details Vibration absorbing damper Vibration absorbing damper

1991-01-30

1993-10-05

Halvosa, George E. A.

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

188298, 188311, 188314, 18832212, 18832219, 267122, 26714013, F16F 910

Patent

active

052497836

ABSTRACT:
A vibration absorbing damper of the viscous type having an outer cylinder enclosing a damping member with the damping member positioned for axial movement within the outer cylinder while retaining a hermetic seal without the use of gaskets or seals. The damping member is comprised of a pair of arcuate structures with high volumetric rigidity and joined axially by a nonelastomeric member. A fluid-retaining reservoir is deformed by forces applied to the exterior cylinder, resulting in deformation of the arcuate structure and resulting compression or extension of the fluid reservoir. Excess fluid is forced into a bellows through a restricting orifice for storage during compression stresses, and returned from the bellows to the fluid reservoir during extension of the outer cylinder during cyclical vibration. The damper operates with deflections as small as 1 microinch and provides a large actuating force, even though the motion is very small. By virtue of the hermetically-sealed structure and freedom from gaskets and seals in the operating mechanism, the damper is particularly suited for space satellite applications and high performance, lightweight truss structures.

REFERENCES:
patent: 2756952 (1956-07-01), Gazley
patent: 3618928 (1971-11-01), Taylor
patent: 4921224 (1990-05-01), Fukumura et al.

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