Appeal 2007-2439
Application 10/089,668
member 22. Specifically, when control valve member 22 opens, the
pressure drops in the control chamber 15 while fuel continues to flow into
the nozzle spring chamber 10 via fuel inlet 11 such that the pressure in
spring chamber 10 is greater than in control chamber 15 (Boecking, col. 4, ll.
35-54). This causes the nozzle needle 5 to move upwardly and open the fuel
orifice 7 (Boecking, col. 4, ll. 35-54). When the control valve member 22
closes, the fuel in spring nozzle chamber 10 is throttled through inlet throttle
25 such that auxiliary control chamber 24 fills first (Boecking, col. 4, ll. 63-
67, col. 5, ll. 1-9). Thus, closing the control valve member 22 creates a
higher pressure in auxiliary control chamber 24, which forces the bush 16
downwardly and lifts the bush 16 from its seat on retaining body 3
(Boecking, col. 5, ll. 1-9). Thus, control valve member 22 acts as an
adjustment tool such that bush 16 (i.e., adjusting body) is capable of
adjustment depending on the position of the control valve member 22 (i.e.,
adjustment tool).
Boecking’s control valve member 22 acts hydraulically, instead of
mechanically, to vary the position of the adjusting member. However, claim
29 does not require that the adjustment tool act in a particular manner to
vary the position of the adjustment body.
For the foregoing reasons, we affirm the Examiner’s § 102 rejection
of claim 29.
DECISION
The Examiner’s rejection of claims 26-29 under 35 U.S.C. § 102 as
being unpatentable over Boecking is AFFIRMED.
The decision of the Examiner is affirmed.
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