Replacement torque converter cover assembly
First Claim
1. A replacement torque converter cover for replacement of an original equipment torque converter cover within an automatic transmission of a land vehicle, wherein said original equipment torque converter cover includes a drum-shaped member having a longitudinal axis, an integral radial wall disposed in perpendicular relation to said axis, wherein an inner surface of said radial wall comprises a clutch piston interface, a plurality of original equipment threaded studs having integral drive pins, wherein said threaded studs are installed in through-drilled holes formed in said radial wall to attach said cover to an engine flexplate externally thereof, wherein said integral drive pins engage a clutch piston internally of said cover, wherein said clutch piston is a component of a lock-up clutch assembly installed within said cover, wherein said replacement torque converter cover comprises:
- a replacement drum-shaped member including a modified radial wall having an inner surface and an outer surface, wherein said inner surface of said modified radial wall includes an array of blind holes formed therein at regular angular intervals, wherein said outer surface of said modified radial wall includes an array of blind threaded holes at regular angular intervals, said array of blind threaded holes being radially oriented at a predetermined angular offset to said array of blind holes;
a plurality of replacement threaded studs engaged within said blind threaded holes; and
a plurality of replacement drive pins disposed within said blind holes, wherein said plurality of replacement drive pins are positioned for engagement within mating receptacles formed in said clutch piston.
2 Assignments
0 Petitions
Accused Products
Abstract
A replacement torque converter cover designed to withstand mechanical stresses generated in the torque converter lock-up clutch of ALLISON transmissions when such transmissions are utilized with diesel engines and other high-torque truck engines. The original equipment cover includes through-drilled holes for receiving unitary threaded stud pins, which function to attach the cover to the engine crankshaft externally and to drive the lock-up clutch piston internally during operation. The present replacement cover provides a lock-up clutch piston interface wherein such through-drilled holes and unitary threaded stud pins are eliminated, which substantially reduces stress concentration and mechanical fatigue in the replacement cover. In comparison to the unitary threaded stud pins of the original equipment cover, the present replacement cover provides separate threaded stud and drive pin components respectively, which are installed at radially offset positions on opposite sides of a modified radial wall having an increased axial thickness and improved durability.
14 Citations
16 Claims
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1. A replacement torque converter cover for replacement of an original equipment torque converter cover within an automatic transmission of a land vehicle, wherein said original equipment torque converter cover includes a drum-shaped member having a longitudinal axis, an integral radial wall disposed in perpendicular relation to said axis, wherein an inner surface of said radial wall comprises a clutch piston interface, a plurality of original equipment threaded studs having integral drive pins, wherein said threaded studs are installed in through-drilled holes formed in said radial wall to attach said cover to an engine flexplate externally thereof, wherein said integral drive pins engage a clutch piston internally of said cover, wherein said clutch piston is a component of a lock-up clutch assembly installed within said cover, wherein said replacement torque converter cover comprises:
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a replacement drum-shaped member including a modified radial wall having an inner surface and an outer surface, wherein said inner surface of said modified radial wall includes an array of blind holes formed therein at regular angular intervals, wherein said outer surface of said modified radial wall includes an array of blind threaded holes at regular angular intervals, said array of blind threaded holes being radially oriented at a predetermined angular offset to said array of blind holes; a plurality of replacement threaded studs engaged within said blind threaded holes; and a plurality of replacement drive pins disposed within said blind holes, wherein said plurality of replacement drive pins are positioned for engagement within mating receptacles formed in said clutch piston. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An improved torque converter cover for replacement of an original equipment torque converter cover within an automatic transmission of a land vehicle, wherein said original equipment torque converter cover includes a drum-shaped member having a longitudinal axis, an integral radial wall disposed in perpendicular relation to said axis, wherein an inner surface of said radial wall comprises a clutch piston interface, a plurality of original equipment threaded studs including integral drive pins, wherein said threaded studs are installed in through-drilled holes formed in said radial wall to attach said cover to an engine flexplate externally thereof, wherein said integral drive pins engage a clutch piston internally of said cover, wherein said clutch piston is a component of a lock-up clutch assembly installed within said cover, wherein the improvements comprise:
a replacement drum-shaped member including a modified radial wall having an inner surface and an outer surface, wherein said inner surface of said modified radial wall includes an array of blind holes formed therein at regular angular intervals, wherein said outer surface of said modified radial wall includes an array of blind threaded holes at regular angular intervals, said array of blind threaded holes being radially oriented at a predetermined angular offset to said array of blind holes. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
Specification