Appeal 2006-2022
Application 10/092,320
Yamamoto discloses a liquid-sealed vibration-proof device for
supporting and bearing automobile engines (Yamamoto, col. 1, ll. 8-10).
Yamamoto’s device includes two chambers (5a,5b) separated by a partition
(10) (Yamamoto, Figure 1). The partition 10 includes an orifice member
(11), a partition plate member (12) and a rubber membrane (13) positioned
between the orifice member (11) and the partition plate member (12)
(Yamamoto, Figures 1 and 2). The rubber member is “pinched” between the
orifice member and the partition plate member such that the “open end” (35)
of the rubber membrane diaphragm portion (34) is brought into pressure
contact with an inner peripheral surface of the annular wall section of the
orifice member (Yamamoto, col. 2, ll. 26-34, col. 6, ll. 27-37, Figures 1, 3,
and 4).
Yamamoto further discloses that the abutting relationship between the
“open end” (35) of diaphragm (34) and the inner annular wall portion (14) of
the orifice member (11) controls the sliding movement of the diaphragm
thereby controlling the “generation of abnormal sound” in the vibration-
proof device (Yamamoto, col. 7, ll. 4-20). Yamamoto also discloses that this
arrangement of the “open end” (35) with the inner annular wall (14) controls
movement of the diaphragm so as to dampen vibrations (Yamamoto, col. 8,
ll. 44-60).
Hein discloses a hydraulically damped powertrain mount having a
partition assembly (28) (Figure 1). Hein further discloses that decoupler 38
is positioned within the partition assembly (28) and the decoupler controls
fluid flow through the partition assembly to control damping of vibrations
(Hein, col. 3, line 43 to col. 4, line 6, Figure 2). Hein’s Figure 2 appears to
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Last modified: November 3, 2007