Appeal No. 1999-0220 Page 3
Application No. 08/540,323
BACKGROUND
The appellant's invention relates to an arresting device.
A copy of the claims under appeal is set forth in the appendix
to the appellant's brief. Claim 1 is representative of the
subject matter on appeal and reads as follows:
An arresting device for halting relative motion
between a main cylinder and a second cylinder of a
hydraulic elevator, wherein the second cylinder moves
within the main cylinder, wherein the second cylinder has
a perimeter and an external radius of curvature, said
arresting device comprising:
two lever arms, each of said two lever arms having
an approximately semi-cylindrical braking surface and a
pivot point, said approximately semi-cylindrical braking
surface having an internal radius of curvature which is
smaller than the external radius of curvature of the
second cylinder, and said pivot point being offset from
said braking surface,
said lever arms having a first position wherein said
lever arms are rotated away from the second cylinder with
said braking surface out of contact with the perimeter of
the second cylinder, and a second position wherein said
lever arms press said braking surface against the
perimeter of the second cylinder to generate a braking
force.
Claims 1 to 4, 6 to 12, 21 and 27 to 30 stand rejected
under 35 U.S.C. § 112, first paragraph, as containing subject
matter which was not described in the specification in such a
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