Appeal No. 2003-1702 Page 3
Application No. 08/749,840
BACKGROUND
Appellants' invention relates to a hydraulic dual circuit
steering system. An understanding of the invention can be
derived from a reading of claim 9, the sole independent claim on
appeal, which is reproduced below.
9. Hydraulic dual circuit steering system
comprising
- a first circuit having a first control unit and
a first steering motor connected with the control unit
via working connections,
- a second circuit having a second control unit
and a second steering motor connected with the control
unit via working connections,
- a change-over valve, which in a first position
activates the first circuit and deactivates the second
circuit and in a second position activates the second
circuit and deactivates the first circuit,
and in which in the first position of the
changeover valve working connections of the second
circuit and in the second position of the changover
valve the working connections of the first circuit are
connected to a pressure source.
The sole prior art reference of record relied upon by the
examiner in rejecting the appealed claims is:
Bohner et al. (Bohner) 6,102,150 Aug. 15, 2000
(§ 102(e) date - Oct. 16, 1998)
Claims 9-17 stand rejected under 35 U.S.C. § 102(e) as being
anticipated by Bohner.
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