Appeal No. 95-1401
Application 07/885,364
a guide piece installed in a structure unified
with said first cam pin and fitted into said guide groove in
such a manner that said guide piece can slide freely
therein.
21. A cam mechanism for a lens barrel, said cam
mechanism comprising:
an annular cam member having at least two arcuate
cam grooves formed thereon with a same profile, said two
arcuate cam grooves positioned circumferentially aligned
with each other and offset with respect to each other in an
optical axis direction;
a movable annular member movably attached to said
annular cam member; and
at least two cam pins installed on said movable
annular member and fitted into said at least two cam grooves
of said annular cam member respectively.
The examiner relies upon admitted prior art in the
specification as represented by figures 1 and 2 and on the
following prior art:
Furusawa et al. (Furusawa) 3,628,439 December 21, 1971
Ito et al. (Ito) 3,787,108 January 22, 1974
Hummel et al. (Hummel) 3,819,254 June 25, 1974
Nakagawa 4,294,526 October 13, 1981
Ohnuki 4,515,438 May 7, 1985
Bornhorst 4,709,311 November 24, 1987
Kohmoto 5,043,752 August 27, 1991
Claims 1-21 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Ohnuki taken with Bornhorst or Hummel or the
admitted prior art alone or together with Kohmoto. With respect
to claim 1, the examiner finds that Kohmoto is substantially the
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