Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1995-12-12
1997-01-21
Poon, Peter M.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
2671414, 267293, F16M 100
Patent
active
055953735
ABSTRACT:
A cylindrical fluid-filled damping device wherein a center shaft member and an outer cylindrical member are elastically connected by an elastic body having a first and a second annular pocket which are axially spaced apart from each other, and an intermediate sleeve secured to the outer circumferential surface of the elastic body has an axially intermediate small-diameter portion, and two first windows and two second windows which are formed on respective axially opposite sides of the small-diameter portion. The first and second annular pockets are open in the outer surface of the intermediate sleeve through the respective first and second windows. An orifice member is interposed between the axially intermediate small-diameter portion of the intermediate sleeve and the outer cylindrical member secured to the outer surface of the intermediate sleeve. The orifice member and the outer cylindrical member cooperate with the elastic body to define a first and a second annular fluid chamber communicating with each other through an orifice passage partially defined by the orifice member.
REFERENCES:
patent: 4702346 (1987-10-01), Uno et al.
patent: 4756514 (1988-07-01), Kanda
patent: 4971299 (1990-11-01), Doi
patent: 5429343 (1995-07-01), Maeno et al.
patent: 5496018 (1996-03-01), McLelland et al.
Poon Peter M.
Tokai Rubber Industries Ltd.
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