Vibration isolator

Details Vibration isolator Vibration isolator

2011-08-30

2011-08-30

Rodriguez, Pam (Department: 3657)

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

C267S140110, C267S141200

Reexamination Certificate

active

08006965

ABSTRACT:
A vibration isolator having an inner passage of a communication tube that communicates the negative pressure chamber with the valve chamber. A pipe connection part and a supply/discharge pipe communicate the valve chamber with the supply/discharge port of a switching valve on the outside of the vibration isolator. The switching valve selectively communicates the supply/discharge port to either an intake manifold as the negative pressure supply source, or an atmosphere space. The negative pressure chamber communicates with the valve chamber through the communication tube on the inner peripheral side of the outer cylinder member. Thus, either of a negative pressure and an atmospheric pressure, which is same as a pressure in the valve chamber, can be supplied into the negative pressure chamber, by supplying either of the negative pressure and the atmospheric pressure into the valve chamber through the supply/discharge pipe and the pipe connection part.

REFERENCES:
patent: 6505822 (2003-01-01), Yamamoto et al.
patent: 7052003 (2006-05-01), Ueki
patent: 2002/0158388 (2002-10-01), Itoh et al.
patent: 2008/0315472 (2008-12-01), Kadowaki et al.
patent: 2004-360710 (2004-12-01), None
patent: 2005-023974 (2005-01-01), None
patent: 2005-113978 (2005-04-01), None
International Search Report dated Oct. 17, 2006.
European Search Report dated Mar. 17, 2011.

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