Abstract: This invention concerns a sprocket gear for facilitating the derailing of the chain of a bicycle transmission and other prime movers. The sprocket gear includes at least two sprockets axially and concentrically positioned relative to one another. Each sprocket includes a perimeter, a front face, and a back face. Gear teeth project axially from at least a first perimeter segment of the front face and at least a second perimeter segment of the front face is free of gear teeth. Gear teeth project axially from the back face perimeter at the at least second segment of the front face. No gear teeth project from the back face perimeter at the at least first perimeter segment of the front face.

Abstract: The present invention concerns a cable guard for use with a compound bow, the compound bow having a handle portion and a pair of opposite bow limbs, a first and a second cable which cross one another in extending between opposite bow limbs and a bowstring, the cable guard includes: a rod having a first end and a second end, wherein the first end of the rod is attached to the handle portion of the compound bow; a housing disposed at the second end of the rod; a pair of swing arms extending opposite to each other and outwardly from the housing in the direction of the bow limbs, the pair of swing arms pivotally connected about a point near one end of the housing; a biasing device in contact with the other end of the housing and the second end of the rod; and wherein when the bowstring is drawn to a draw position, the swing arms move in the direction of the bowstring moving the housing in the direction of the handle compressing the biasing device.

Abstract: This invention includes a sprocket assembly for facilitating the derailing of the chain of a bicycle transmission and other prime movers. The first embodiment of the invention relates to a sprocket gear having at least two sprockets axially and concentrically positioned relative to one another. Each sprocket includes a non-circular configuration having at least one long radius and at least one short radius. The sprockets being axially aligned adjacent to one another such that the short radius of one sprocket is axially substantially aligned with and substantially equal in length with said long radius of an adjacent sprocket. The second embodiment of the present invention provides a sprocket assembly having two sprockets with the tooth being displaced by less than one tooth relative to each other. Thus, it is possible to vary the relationship between the teeth of the small sprocket and the chain to engage these teeth without having to vary the phase relationship between the larger and smaller sprockets.

Abstract: This invention comprises a sprocket gear for facilitating the derailing of the chain of a bicycle transmission and other prime movers. The sprocket gear having at least two sprockets axially and concentrically positioned relative to one another. Each sprocket includes a non-circular configuration having at least one long radius and at least one short radius. The sprockets being axially aligned adjacent to one another such that the short radius of one sprocket is axially substantially aligned with and substantially equal in length with said long radius of an adjacent sprocket. The sprockets include a perimeter, a front face, and a back face. Gear teeth project axially from at least a first perimeter segment of said front face and wherein at least a second perimeter segment of said front face is free of gear teeth.

Abstract: The present invention concerns a cable guard for use with a compound bow, the compound bow having a handle portion and a pair of opposite bow limbs, a first and a second cable which cross one another in extending between opposite bow limbs and a bowstring, the cable guard comprising: a rod having a first end and a second end, wherein the first end of the rod is attach to the handle portion of the compound bow; a housing disposed at the second end of the rod; at least one swing arm extending outwardly from the housing in the direction of the bow limbs, the swing arm pivotally connected about a point near one end of the housing; a biasing means in contact with the other end of the housing and the second end of the rod; and wherein when the bowstring is drawn to a draw position, the swing arm moves in the direction of the bowstring moving the housing in the direction of the handle compressing the biasing means.

Abstract: The present invention concerns a cable guard for use with a compound bow, the compound bow having a handle portion and a pair of opposite bow limbs, a first and a second cable which cross one another in extending between opposite bow limbs and a bowstring, the cable guard comprising: a rod having a first end and a second end, wherein the first end of the rod is attach to the handle portion of the compound bow; a housing disposed at the second end of the rod; a pair of swing arms extending opposite to each other and outwardly from the housing in the direction of the bow limbs, the pair of swing arms pivotally connected about a point near one end of the housing; a biasing means in contact with the other end of the housing and the second end of the rod; and wherein when the bowstring is drawn to a draw position, the swing arms move in the direction of the bowstring moving the housing in the direction of the handle compressing the biasing means.

Abstract: The present invention concerns a cable guard for use with a compound bow, the compound bow having a handle portion and a pair of opposite bow limbs, a first and a second cable which cross one another in extending between opposite bow limbs and a bowstring, the cable guard comprising: a rod having a first end and a second end, wherein the first end of the rod is attach to the handle portion of the compound bow; a housing disposed at the second end of the rod; a pair of swing arms extending opposite to each other and outwardly from the housing in the direction of the bow limbs, the pair of swing arms pivotally connected about a point near one end of the housing; a biasing means in contact with the other end of the housing and the second end of the rod; and wherein when the bowstring is drawn to a draw position, the swing arms move in the direction of the bowstring moving the housing in the direction of the handle compressing the biasing means.

Abstract: There is disclosed a pulley mechanism for a compound bow which allows the drawstring to move through its full range of motion while the compound bow bends only a relatively short distance. Because the compound bow returns to its resting position quickly, the resultant forward motion of the drawstring is faster and thus the arrow moves with greater speed and accuracy. The drawstring pulley of the compound bow is driven by a center gear mating with a fixed gear at the end of the bow arm. The drawstring pulley is thus driven in an orbit around the end of the bow arm. In turn, the compound bow power pulley is driven in an orbit centered by an off-set hub and powered from its center by the motion of the drawstring pulley. The drawstring pulley is free to revolve on full revolution while the power pulley only revolves one-half turn.

Abstract: A bowstring apparatus for use with an archer's bow comprising a pair of ring members each rotatably mounted on an axle pin with a tip interconnector attachably securing each limb tip to each axle pin and further interconnecting each axle pin to each other to enable each ring member to rotate about a parallel axle pin axis relative each other and with an arc member axially spaced on the axle pin and securely attached to the ring member so as to permit simultaneous rotation about the axle pin when the ring member rotates. A flexible cord member secures together each distal end of the arc member to enable simultaneous tensioning when the ring members are tensioned.

Abstract: An apparatus for changing the leverage of a bicycle pedal by telescoping the pedal on the pedal arm during rotation of the pedal arm and pedal guide around the pedal axis; the apparatus comprising a pedal guide which includes a lead bolt and has the pedal attached thereto, a pedal arm, a cam plate, a cam ring, a ring bearing, a pedal axle, a sprocket, and a spindle housing. The lead bolt of the pedal guide rotatably attaches to the cam ring which peripherally encloses the ring bearing. The ring bearing is peripherally located around the cam plate thus enabling the cam ring to rotate with respect to the cam plate. As the pedal arm and pedal guide rotate, the cam ring and cam plate control the telescoping motion of the pedal and pedal guide by controlling the movement of the lead bolt of the pedal guide. The pedal guide slides on the pedal arm. The sprocket is fixedly connected to the pedal axle.