Appeal No. 1999-0368
Application 08/636,033
surface of the usual contour conforming to the M.C.B.
standards” (page 1, lines 91-95). Packer further states that
the emergency knuckle “is formed with the locking jaw 8 of a
contour conforming to the M.C.B. standards” (page 2, lines 2-
3).
Concerning the operation of Packer’s emergency knuckle, a
reading of page 2, lines 7-74, of the specification makes
clear that the emergency knuckle thereof does not function
like the standard knuckle it replaces in all respects. For
example, the emergency knuckle has a holding lug 12 and a
rearwardly extending arm portion that cooperate with the
supporting head 1 of the coupler to prevent the knuckle from
rotating, thereby securing the emergency knuckle in operative
locked position at all times (page 2, lines 46-54).
Turning to the examiner’s rejection of claim 1 as being
anticipated by Packer, the examiner found (answer, page 3)
that Packer discloses an emergency knuckle having an altered
outer shape and core structure, such that it is lighter than
the standard coupler knuckle it is designed to replace.
3
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