Patent Number: 6,308,941

Title: Liquid sealed cylindrical-type vibration preventing apparatus

Abstract: A liquid sealed cylinder vibration preventing apparatus including a main shaft metal fitting, an intermediate cylinder metal fitting outside the main shaft substantially coaxial and having windows facing each other in a diameter direction, a rubber elastic body between the main shaft and intermediate cylinder metal fittings to connect the main shaft and intermediate cylinder metal fittings and having a recess opened to each window, a first diaphragm on one of the windows and disposed in one of the recesses, an orifice forming member on the rubber elastic body, the orifice forming member forming a main liquid chamber, a sub liquid chamber, a first orifice passage and a second orifice passage, an outer cylindrical metal fitting outside the intermediate cylinder metal fitting substantially coaxial and having a communicate window communicated with atmosphere, and a second diaphragm held by the outer cylinder metal fitting and facing the second orifice passage.

Inventors: Tsutsumida; Jyoji (Komaki, JP)

Assignee: Tokai Rubber Industries, Ltd.

International Classification: F16F 13/04 (20060101); F16F 13/14 (20060101); F16F 005/00 ()

Expiration Date: 10/30/2018