192 clutches and power-stop control – Clutch and brake – Vehicle type
Reexamination Certificate
2008-01-22
2008-01-22
Lorence, Richard M (Department: 3681)
192 clutches and power-stop control
Clutch and brake
Vehicle type
C192S070251, C192S11000B, C192S111600, C192S115000
Reexamination Certificate
active
11057810
ABSTRACT:
A clutch assembly outboard support comprising at least one bearing mounted to an outer structure in or near the clutch assembly, e.g. the clutch housing or protective cover, and mounted to or impacting upon the clutch assembly itself, to relieve the force applied to the inner support bearing of the transmission input shaft and to restrict clutch assembly motion regardless of the engine, starter drive or other forces applied to it. The increased clutch stability and alignment according to the present invention provide more complete clutch disengagement allowing for significantly improved transmission shifting characteristics by reducing or eliminating clutch drag during shifting. Furthermore, the various embodiments according to the present invention substantially enhance the bearing life, increase the positional stability of the clutch assembly in its normal operation, enhance the useful life of the clutch components, reduce wear on the transmission and starter assemblies, provide increased starter efficiency, reduce drive-line backlash, and potentially enhance performance by increasing available power by reducing power lost in the clutch assembly and associated bearing and connecting elements, without disturbing traditional outboard clutch deployment. Additional inventive embodiments include clutch hub braking mechanisms to further enhance clutch operation.
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Rivera Engineering, Photo of Jim McLure at Newport News, VA, Pro Competition 1985.
Figures from Harley-Davidson Manuals: for 1990-93 Big Twin, Fig. 6-12 Clutch Assembly.
Figures from Harley-Davidson Manuals: for 1971-84 Sportster XL, Fig. 6-8 Clutch.
Figures from Harley-Davidson Manuals: for 1986-90 Sportster XL, Fig. 6-10 Clutch Cable Removal & Installation.
Figures from Harley-Davidson Manuals: for 1986-90 Sportster XL, Fig. 6-13 Clutch.
Figures from Harley-Davidson Manuals: for 1971-84 Sportster XL, Fig. 6-5 Clutch Release Mechanism.
Figures from Harley-Davidson Manuals: for 1984-89 Big Twin, Fig. 6-25 Wet Clutch—Exploded View.
Figures from Harley-Davidson Manuals: for 1991-93 Sportster XL, Fig. 6-14 Clutch Release Mechanism—1993 Models.
Figures from Harley-Davidson Manuals: for 1994- Sportster XL, Fig. 6-17 Clutch Relaase Mechanism—1994 Models.
Figures from Harley-Davidson Manuals: for 91-93, 94- Sportster XL, Fig. 6-19 Clutch Assembly 1993/1994.
Dahlin John H.
Grotzinger Stephen J.
Lorence Richard M
Martin Joanne M.
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