Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1986-09-22
1988-04-26
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
188320, 248562, F16F 500
Patent
active
047399791
ABSTRACT:
A fluid-filled resilient support structure including a first annular resilient member disposed radially outwardly of an inner sleeve, a pair of annular closure members closing opposite ends of an annular space between the inner sleeve and the first resilient member, a cylindrical member fitted on an intermediate portion of the inner sleeve, an orifice member spaced radially outwardly from the cylindrical member, a second annular resilient member between the orifice member and the cylindrical member, and an outer sleeve fitted on the outer surface of the orifice member. The orifice member has a radially outer portion sandwiched between upper and lower portions of the first resilient member in the axial direction. The orifice and cylindrical members and the second resilient member axially divide the annular space into two fluid chambers which are closed at the opposite axial ends of the first resilient member by the closure members. The orifice member has a circumferential groove formed in its outer surface. The length of the groove is not less than one full outer circumference of the orifice member. The outer sleeve closes the groove and thereby defines a circumferential orifice through which the two fluid chambers communicate with each.
REFERENCES:
patent: 2668033 (1954-02-01), Lee
patent: 4571215 (1986-02-01), Hansen
patent: 4573656 (1986-03-01), Yoshida et al.
Kashnikow Andres
Potosnak Richard
Tokai Rubber Industries Ltd.
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