Appeal No. 2005-1727
Application No. 09/925,013
Scripps Clinic & Research Found. v. Genentech Inc., 927 F.2d 1565,
1576, 18 USPQ2d 1001, 1010 (Fed. Cir. 1991).
Stief pertains to chain tensioners of the sort disclosed and
claimed by the appellants. For purposes of the appealed
rejections, the examiner focuses on the embodiment illustrated in
Figures 1-4. As described by Stief,
. . . [T]here are shown a tensioner according to the
present invention, a piston 1, a tensioner housing 2 and
a receiving housing 3. The piston 1 constitutes the fixed
element with one of its ends inserted into the tensioner
housing 2 which is configured as a cylindrical body and
constitutes the displaceable element. . . .
A non-return valve 7 separating a high pressure
chamber 8 of the tensioner housing 2 from an oil
reservoir 9 of the piston 1 is arranged in the connecting
region between the piston 1 and the tensioner housing 2.
The piston 1 made as a cylindrical body is supported at
its end remote from the non-return valve 7 on the bottom
of the receiving housing 3 in whose cylindrical bore 10
it is arranged. Thus, the piston 1, like the receiving
housing 3, is stationary. It is supplied through an oil
input opening 11 and an oil transfer groove 12 with
hydraulic oil which flows into the oil reservoir 9.
A compression spring 13 arranged in the tensioner
housing 2 is supported at one end on the piston 1 and at
the other end on the piston-remote bottom of the
tensioner housing 2. This compression spring 13 effects
the extension of the tensioner housing 2 out of the
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007