Abstract: A front differential for a four wheel drive vehicle including a pinion assembly with first and second pinions that are engaged with a ring gear assembly with first and second ring gears. The first pinion and first ring gear combination are rotatable independent from the second pinion and second ring gear combination, thus permitting one to rotate relative to the other. The first pinion and first ring gear combination are adapted to rotate one driven shaft, and the second pinion and second ring gear combination are adapted to rotate the other driven shaft. A bi-directional overrunning clutch assembly is engaged with an end of the drive shaft and includes one set of rolls located adjacent to the first pinion shaft, and another set of rolls located adjacent to the second pinion shaft. The clutch assembly control torque transmission between the pinion shafts and the drive shaft.

Abstract: A front differential for a four wheel drive vehicle including a pinion assembly with first and second pinions that are engaged with a ring gear assembly with first and second ring gears. The first pinion and first ring gear combination are rotatable independent from the second pinion and second ring gear combination, thus permitting one to rotate relative to the other. The first pinion and first ring gear combination are adapted to rotate one driven shaft, and the second pinion and second ring gear combination are adapted to rotate the other driven shaft. A bi-directional overrunning clutch assembly is engaged with an end of the drive shaft and includes one set of rolls located adjacent to the first pinion shaft, and another set of rolls located adjacent to the second pinion shaft. The clutch assembly control torque transmission between the pinion shafts and the drive shaft.

Abstract: A bi-directional overrunning clutch includes a housing and a pair of hubs substantially coaxially aligned within the housing. A pair of roll cages position a plurality of rollers between each hub and an inner cam surface of the housing. The rollers are positioned to wedge between the hub and the inner cam surface when one of the hub and the housing is rotated with respect to the other. End caps are attached to the housing adjacent to the hubs. A friction disk mechanism includes a friction plate rotating in combination with each the roll cage and a spring compressed between the end cap and the roll cage for biasing the friction member into frictional contact with the hub. An intermittent coupler is located between each roll cage and configured to engage the roll cages so as to permit indexing of one roll cage relative to the other.

Abstract: A bi-directional overrunning clutch includes a housing and a pair of hubs substantially coaxially aligned within the housing. A pair of roll cages position a plurality of rollers between each hub and an inner cam surface of the housing. The rollers are positioned to wedge between the hub and the inner cam surface when one of the hub and the housing is rotated with respect to the other. End caps are attached to the housing adjacent to the hubs. A friction disk mechanism includes a friction plate rotating in combination with each the roll cage and a spring compressed between the end cap and the roll cage for biasing the friction member into frictional contact with the hub. An intermittent coupler is located between each roll cage and configured to engage the roll cages so as to permit indexing of one roll cage relative to the other.

Abstract: A bi-directional overrunning clutch includes a housing and a pair of hubs substantially coaxially aligned within the housing. A pair of roll cages position a plurality of rollers between each hub and an inner cam surface of the housing. The rollers are positioned to wedge between the hub and the inner cam surface when one of the hub and the housing is rotated with respect to the other. End caps are attached to the housing adjacent to the hubs. A friction disk mechanism includes a friction plate rotating in combination with each the roll cage and a spring compressed between the end cap and the roll cage for biasing the friction member into frictional contact with the hub. An intermittent coupler is located between each roll cage and configured to engage the roll cages so as to permit indexing of one roll cage relative to the other.

Abstract: A bi-directional overrunning clutch is disclosed for controlling torque transmission between a secondary drive shaft and secondary driven shafts. The overrunning clutch includes a pinion input shaft in a differential housing that engages with a clutch housing rotatably disposed within the differential housing. At least one race is located adjacent to the clutch housing and is engaged with an output shaft. A cage is located between the race and the clutch housing. The cage is movable with respect to the clutch housing. A first coil is mounted within the differential housing adjacent to the cage and is adapted to produce an electromagnetic field when energized which causes the cage to drag with respect to the clutch housing. The dragging of the cage with respect to the clutch housing positions the cage to engage the clutch housing with the race when wheels on a primary drive shaft lose traction. A second coil is mounted within the differential housing adjacent adjacent to the cage.

Abstract: A method for making caps of eight different sizes for each of a persons teeth allows premaking caps that will fit almost any tooth of any patient; caps are preferably prepared from a commercially available quartz or silicon dioxide filled acrylic material called Artglass r; the caps allow curing a material such as Charisma r with ultraviolet light thereby allowing a practitioner to place a cap containing Charisma r over a tooth prepared for capping; settle the cap in place; remove any excess and expose the capped tooth with a ultraviolet light for about three minutes to form a solidly capped tooth in one visit to the practitioners office.

Abstract: The invention covers a boat comprising a minimum of two segments with interlocking dovetail joints and equipped with a pair of heavy duty clamps to fit over adjacent ends of each segment and clamp the segments together near the top and close to the bottom of each segment in order to hold the segments rigidly together of a point of maximum stress.

Abstract: A bi-directional overrunning clutch is disclosed for controlling torque transmission between a secondary drive shaft and secondary driven shafts. The overrunning clutch includes a pinion input shaft in a differential housing that engages with a clutch housing rotatably disposed within the differential housing. At least one race is located adjacent to the clutch housing and is engaged with an output shaft. A cage is located between the race and the clutch housing. The cage is movable with respect to the clutch housing. A first coil is mounted within the differential housing adjacent to the cage and is adapted to produce an electromagnetic field when energized which causes the cage to drag with respect to the clutch housing. The dragging of the cage with respect to the clutch housing positions rolls within the cage to engage the clutch housing with the race when wheels on a primary drive shaft lose traction.