Rubber and fluid type vibration damper

Details Rubber and fluid type vibration damper Rubber and fluid type vibration damper

1982-05-20

1984-11-20

Butler, Douglas C.

Spring devices

Vehicle

Bolster

248562, 2671401, F16F 136, F16F 910, B60K 512

Patent

active

044835213

ABSTRACT:
A vibration damper of viscous damping type for damping low-frequency (10 to 20 Hz) vibrations has at least one subpassageway oblique to the axis of a main passageway. Since vortexes are generated around the main passageway as damping fluid passes through the subpassageway, the fluid can effectively reciprocate through the main passageway in response to pressure gradients induced by the vortexes, thus increasing the damping force generated as the fluid flows through the main passageway. Further, since the frequency at which the maximum flow rate, that is, the maximum damping factor can be obtained is determined on the basis of the dimensions of a passageway, the dimensions of the main passageway and the subpassageway are selected so as to match the maximum-flow-rate frequency of the subpassageway with that of the main passageway.

REFERENCES:
patent: 2316924 (1943-04-01), Whisler, Jr.
patent: 2387066 (1945-10-01), Harding
patent: 3220517 (1965-11-01), Lorenz
patent: 3743222 (1973-07-01), Smith
patent: 4159091 (1979-06-01), Le Salver et al.
patent: 4307653 (1981-12-01), Goes et al.
patent: 4383679 (1983-05-01), Kakimoto
patent: 4437653 (1984-03-01), Kakimoto

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