Fastening means establishing concentricity between a vehicle flywheel, a fluid converter and an engine crankshaft

Claim 2

Fastening means establishing concentricity between a vehicle flywheel, a fluid converter and engine crankshaft comprising in combination: a crankshaft, an end of the crankshaft having a tapped hole therein; a splined surface on the exterior of said crankshaft adjacent said end; a flywheel having a centrally located aperture therein defined by an axially extending sleeve; said sleeve having an internal splined surface mating with and receiving the splined surface on said crankshaft providing a driving connection therebetween; an annular outwardly facing tapered retaining and piloting surface on said flywheel; a pilot and retaining bolt; a threaded shank on said bolt for engagement with the tapped hole in said crankshaft end, an enlarged head on said bolt, an annular tapered retaining and piloting surface on said bolt for engagement with said tapered surface on said flywheel, said tapered surfaces frictionally engaging and locking said bolt to said flywheel when said bolt is tightened thereagainst, said bolt head having a relatively large cavity in said enlarged head facing a direction axially opposite to that of said threaded shank; a fluid converter, centering means secured to and projecting outwardly from said fluid converter, said centering means having a size slightly less than that of the cavity in said enlarged bolt head, and a plurality of flat wrench surfaces on said bolt head whereby tightening of said bolt shank in the tapped hole in said crankshaft end draws mating tapered retaining and piloting surfaces into engagement frictionally locking and securing said flywheel to said crankshaft while simultaneously piloting the flywheel relative thereto and receipt of said fluid converter centering means within the cavity in said enlarged bolt head piloting said fluid converter relative to said crankshaft thereby establishing concentricity between the engaged crankshaft, flywheel and fluid converter.

Claim 3

Fastening means establishing concentricity between a vehicle flywheel, a fluid converter and an engine crankshaft comprising in combination a crankshaft, and end of the crankshaft having a tapped hole therein; a splined surface on the exterior of said crankshaft adjacent said end; a flywheel having a centrally located aperture therein; a mounting collar having an axially extending annular flange fitted into said central aperture and further having a circumferential radially extending flange of a diameter greater than the axial flange, said circumferential flange overlying a portion of said flywheel for support thereof and providing a surface for connecting said flywheel to said mounting collar, a sleeve portion on said collar extending in a direction opposite to said axial flange and having a diameter less than that of said axial flange, said sleeve portion having an internally splined surface mating with said crankshaft splined surface providing a driving connection therebetween, said mounting collar having an annular outwardly facing conically tapered retaining and piloting surface thereon; a retaining and pilot bolt, a threaded shank on said bolt for engagement with a tapped hole in said crankshaft end, an enlarged head on said bolt, an annular conically tapered retaining and piloting surface facing toward said threaded shank on said bolT for engagement with said mounting collar tapered surface and frictionally locking said bolt to said collar when said bolt is tightened thereagainst, said bolt head having a relatively large cylindrical cavity in said enlarged head facing a direction axially opposite to that of said threaded shank; a fluid converter having a projecting surface, a circular centering disc secured to said projecting surface of said fluid converter and having a diameter slightly less than the diameter of said bolt head cylindrical cavity; and a plurality of flat wrench surfaces on said bolt head whereby tightening of said bolt shank in said crankshaft end draws said mating bolt and mounting collar tapered surfaces into frictional locking engagement securing said flywheel to said crankshaft while simultaneously piloting said flywheel relative to said crankshaft and receipt of said fluid converter centering disc within said bolt head cylindrical cavity piloting said fluid converter relative to said crankshaft thereby establishing precise concentricity between said crankshaft, said flywheel and said fluid converter.

Claim 4

Fastening means establishing concentricity between a vehicle flywheel, a fluid converter and an engine crankshaft comprising in combination a crankshaft, and end of the crankshaft having a tapped hole therein; a splined surface on the exterior of said crankshaft adjacent said end; a flywheel having a centrally located aperture therein; a mounting collar having an axially extending annular flange fitted into said central aperture and further having a circumferential radially extending flange of a diameter greater than the axial flange, said circumferential flange overlying a portion of said flywheel for support thereof and providing a surface for connecting said flywheel to said mounting collar, a sleeve portion on said collar extending in a direction opposite to said axial flange and having a diameter less than that of said axial flange, said sleeve portion having an internally splined surface mating with said crankshaft splined surface providing a driving connection therebetween, said mounting collar having an annular outwardly facing conically tapered retaining and piloting surface thereon; a retaining and pilot bolt, a threaded shank on said bolt for engagement with a tapped hole in said crankshaft end, an enlarged head on said bolt, an annular conically tapered retaining and piloting surface facing toward said threaded shank on said bolT for engagement with said mounting collar tapered surface and frictionally locking said bolt to said collar when said bolt is tightened thereagainst, said bolt head having a relatively large cylindrical cavity in said enlarged head facing a direction axially opposite to that of said threaded shank; a fluid converter having a projecting surface, a circular centering disc secured to said projecting surface of said fluid converter and having a diameter slightly less than the diameter of said bolt head cylindrical cavity; and a plurality of flat wrench surfaces on said bolt head whereby tightening of said bolt shank in said crankshaft end draws said mating bolt and mounting collar tapered surfaces into frictional locking engagement securing said flywheel to said crankshaft while simultaneously piloting said flywheel relative to said crankshaft and receipt of said fluid converter centering disc within said bolt head cylindrical cavity piloting said fluid converter relative to said crankshaft thereby establishing precise concentricity between said crankshaft, said flywheel and said fluid converter.

Claim 5

Fastening means establishing concentricity between a vehicle flywheel, a fluid converter and an engine crankshaft permitting connection of the flywheel to the crankshaft after an engine end housing member has been assembled over an end of the crankshaft comprising in combination: a crankshaft, an end of the crankshaft having a threaded tapped hole therein; a splined surface on the exterior of said crankshaft adjacent said end; a flywheel having a centrally located aperture therein, an axially extending sleeve integral with said flywheel and defining the aperture therein, said sleeve having an internal splined surface mating with and receiving the splined surface on said crankshaft providing a driving connection therebetween, the external surface of said sleeve providing a bearing and sealing surface between said end housing member and said sleeve whereby the flywheel is supported for rotation relative to said end housing member; an annular outwardly facing tapered retaining and piloting surface on said flywheel; a pilot and retaining bolt; a threaded shank on said bolt for engagement with the tapped hole in said crankshaft end, an enlarged head on said bolt, an annular tapered surface on said bolt head facing toward said threaded shank for engagement with the tapered surface on said flywheel and frictionally locking said bolt to said flywheel when said bolt is tightened thereagainst, the tapered surface piloting said flywheel relative to said crankshaft as said bolt is tightened within the end of said crankshaft by virtue of the mating engaged tapered surfaces, the tightening of said bolt on the end of said crankshaft into engagement with said flywheel also precisely aligning the flywheel on the exterior splined surface of said crankshaft whereby the play in the splined connection between said crankshaft and said flywheel is substantially reduced; said bolt head having a relatively large cylindrical cavity in said enlarged head facing a direction axially opposite to that of said threaded shank; a fluid converter, a circular centering disc, said fluid converter including a projecting surface extending axially toward the end of said crankshaft when placed adjacent thereto, said circular centering disc secured to said projecting surface of said fluid converter and having a diameter slightly less than the diameter of said bolt head cylindrical cavity; and a plurality of flat wrench surfaces on said bolt head whereby tightening of said bolt shank in said crankshaft end draws said mating tapered annular bolt and flywheel surfaces into frictional locking engagement positively securing said flywheel to said crankshaft while simultaneously piloting said flywheel relative thereto and receipt of said fluid converter center disc within said bolt head cylindrical cavity precisely piloting said fluid converter relative to said crankshaft and said flywheel thereby establishing concentricity betWeen the engaged members.

Claim 6

Fastening means establishing concentricity between a vehicle flywheel, a fluid converter and an engine crankshaft permitting connection of the flywheel to the crankshaft after an engine end housing member has been assembled over an end of the crankshaft comprising in combination: a crankshaft, an end of the crankshaft having a threaded tapped hole therein; a splined surface on the exterior of said crankshaft adjacent said end; a flywheel having a centrally located aperture therein, an axially extending sleeve integral with said flywheel and defining the aperture therein, said sleeve having an internal splined surface mating with and receiving the splined surface on said crankshaft providing a driving connection therebetween, the external surface of said sleeve providing a bearing and sealing surface between said end housing member and said sleeve whereby the flywheel is supported for rotation relative to said end housing member; an annular outwardly facing tapered retaining and piloting surface on said flywheel; a pilot and retaining bolt; a threaded shank on said bolt for engagement with the tapped hole in said crankshaft end, an enlarged head on said bolt, an annular tapered surface on said bolt head facing toward said threaded shank for engagement with the tapered surface on said flywheel and frictionally locking said bolt to said flywheel when said bolt is tightened thereagainst, the tapered surface piloting said flywheel relative to said crankshaft as said bolt is tightened within the end of said crankshaft by virtue of the mating engaged tapered surfaces, the tightening of said bolt on the end of said crankshaft into engagement with said flywheel also precisely aligning the flywheel on the exterior splined surface of said crankshaft whereby the play in the splined connection between said crankshaft and said flywheel is substantially reduced; said bolt head having a relatively large cylindrical cavity in said enlarged head facing a direction axially opposite to that of said threaded shank; a fluid converter, a circular centering disc, said fluid converter including a projecting surface extending axially toward the end of said crankshaft when placed adjacent thereto, said circular centering disc secured to said projecting surface of said fluid converter and having a diameter slightly less than the diameter of said bolt head cylindrical cavity; and a plurality of flat wrench surfaces on said bolt head whereby tightening of said bolt shank in said crankshaft end draws said mating tapered annular bolt and flywheel surfaces into frictional locking engagement positively securing said flywheel to said crankshaft while simultaneously piloting said flywheel relative thereto and receipt of said fluid converter center disc within said bolt head cylindrical cavity precisely piloting said fluid converter relative to said crankshaft and said flywheel thereby establishing concentricity betWeen the engaged members.