Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1992-08-14
1993-09-21
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Hand operated
745005, 74107, 74 892, 74 57, 74569, 74567, 74527, 74553, F16C 112, F16H 5306
Patent
active
052458865
ABSTRACT:
A rotary temperature mechanism for controlling the temperature door of a HVAC system of a vehicle includes a rotatable cam connected by a shaft to a rotary temperature control knob. The cam includes a helical rib thereon coacting with a carrier restricted to linear, sliding motion by the housing in response to rotation of the cam. The housing provides a linear track for guiding the carrier. Detent members are provided between the cam and housing to impart discrete stepping feel on rotation of the knob. The detent members include ball bearings on the cam rolling along a corrugated track of the housing. A cable is connected to the carrier and controls the temperature door by linear motion imparted thereon.
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Gasaway Timothy A.
Truesdell Robin L.
Ward Clifton B.
Willis John W.
Delco Electronics Corporation
Griffin Patrick M.
Luong Vinh T.
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