Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1997-01-23
1998-05-26
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Hand operated
74 53, 74606R, 1525023, F16C 110, F16H 2508
Patent
active
057551405
ABSTRACT:
A windshield wiper drive assembly including an electric motor having a motor output shaft coupled to a reduction gearbox having a gearbox output shaft and a drive cam mounted onto the gearbox output shaft; a first rigid cable sheath mount connected to the reduction gearbox; a wiper mounting plate having a wiper coupling shaft rotatably mounted therethrough, a first end of the coupling shaft having a first lever arm end of a rigid lever arm rigidly connected thereto in a manner such that the lever arm extends radially from the wiper coupling shaft; a second rigid cable sheath mount connected to the mounting plate; and a push/pull cable drive mechanism including a length of cable, slidably positioned within a cable sheath having a first cable sheath end and a second cable sheath end, and a cable actuation mechanism including a roller shaft coupled to a first cable end of the cable, the roller shaft having a roller wheel positioned at the end thereof and a compression spring positioned thereover, the roller shaft being positioned with respect to the first cable sheath mount and the drive cam in a manner such that the roller is urged against the cam by a spring forced generated by the spring, a second cable end of the cable being attached to a second lever end of the lever in a manner such that movement of the roller shaft causes a corresponding movement of the lever arm.
REFERENCES:
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patent: 5274876 (1994-01-01), Wehrspann
patent: 5287585 (1994-02-01), Yamamoto et al.
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patent: 5408719 (1995-04-01), DeRees et al.
Galloway Jim
Turbessi Timothy
Breaux Joseph N.
Luong Vinh T.
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