Machine element or mechanism – Elements – Gear casings
Reexamination Certificate
2008-04-01
2008-04-01
Johnson, Vicky A. (Department: 3682)
Machine element or mechanism
Elements
Gear casings
Reexamination Certificate
active
10833343
ABSTRACT:
A case cover assembly to which a sheave for a continuously variable transmission is mountable for rotation about an axis is configured to provide fluid communication between the sheave and a pressurized fluid source. The case cover assembly includes a conduit defining a first segment of a passageway for providing fluid communication between the pressurized fluid source and the sheave. An inner annular surface and an outer annular surface define an annular second segment of the passageway. A chamber at least partially formed by a case cover member defines a third segment of the passageway. The third segment is positioned with respect to the second segment such that fluid flows radially inward toward the axis from the second segment. The radial inflow provides improved pressure transference and packaging compared to the prior art.
REFERENCES:
patent: 2502564 (1950-04-01), Hansson
patent: 4539866 (1985-09-01), Koivunen
patent: 5605513 (1997-02-01), Van Der Hardt Aberson
patent: 6267700 (2001-07-01), Takayama
patent: 6287227 (2001-09-01), Vahabzadeh et al.
patent: 6338688 (2002-01-01), Minami et al.
patent: 6398683 (2002-06-01), Fukuda
Harsch Charles
Schoenek Norman
General Motors Corporation
Johnson Vicky A.
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