Appeal No. 2002-0612
Application No. 09/254,631
the pump components called for in independent claim 17. More
specifically, Arnold’s pump includes a piston 42 that
reciprocates in a cylinder 21, passages 54, 55 that collectively
comprise an intake opening, an intake check valve 50 in the
intake opening, passages 59, 60 that collectively comprise a high
pressure outlet opening, an outlet check valve 51 in the high
pressure outlet opening, housing parts 53, 20 that are bridged by
the high pressure outlet opening, and an element (not numbered)
in the outlet opening at a location where it crosses from one
housing part to the other, said element presumably acting to seal
the outlet opening at said location.
Concerning the sealing of the outlet opening at the location
where it crosses from one housing part to the other, claim 17
states that the high pressure outlet opening
is provided with a metallic high-pressure sealing
element (106, 114, 126, 130-134) which includes end
faces, and that the housing part (22), with the
interposition of the metallic high-pressure sealing
element, is tightened against the housing base body
(30) by way of screws (69) in such a way that the high-
pressure side is sealed through the clamping of the
high-pressure sealing element, with second fuel outlet
opening (61), said third outlet opening (65), and said
high-pressure sealing element all being coaxial, with
the end faces of the high-pressure sealing element
providing the sealing function. [Emphasis added.]
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