Appeal 2006-2596
Application 10/869,144
Appellant invented a parking brake arrangement in an electrically
operated brake, in which a rotary movement of an electric motor is
transformed into a translational brake applying movement, and wherein an
elasticity spring is arranged in series with the elasticity of the brake to
provide a rotary parking brake force. The elasticity spring is provided to
address the problem of ensuring a satisfactory parking braking when disc
brake portions heated during a preceding service braking cool off and return
to normal size after their heat expansion (Specification [0005] – [0006]).
Claim 1, the only independent claim before us on appeal, is illustrative of the
invention and reads as follows:
1. A parking brake arrangement in an electrically
operated brake, in which a service brake function
is performed by a rotary movement of an electric
motor, transformed into a translational brake
applying movement by a force transmission
mechanism, characterized in that a parking brake
function is performed by a separate elasticity
spring so arranged in a force transmitting chain of
the brake that its elasticity is in series with the
elasticity of the brake and adapted to provide a
rotary parking brake force also transformed into a
translation brake applying movement by the force
transmission mechanism.
The Examiner relies upon the following as evidence of
unpatentability:
Wolfsteiner1 WO 01/21977 A1 Mar. 29, 2001
1 We, like the Examiner (Answer 3), derive our understanding of this
reference from Wolfsteiner ‘477 (US 6,722,477 B1), which issued April 20,
2004, on the U.S. national stage patent application of Wolfsteiner.
2
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