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US 4,164,153 AGranted
Device for use in mechanical power transmission system
OwnerDenis J. Moritsch, Fred A. Moritschinventors
Life of this patent
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OwnerDenis J. Moritsch, Fred A. Moritschinventors
Estimating the term…
Disclosed herein is a bicycle comprising a frame, a pair of wheels supporting the frame, a sprocket fixed to one of the wheels, a drive member rotatably carried by the frame, a pair of pedals connected to the drive member, a plurality of links carried by the drive member for common rotation therewith and for pivotal movement relative thereto, a driven member, an inner guide ring, an arm supporting the inner guide ring on the frame for transverse movement relative to the rotary axis of the drive member, surfaces on each of the outer ends of the links and on the driven member and on the inner ring for mounting the driven member for common movement with the inner ring and for rotation relative thereto and for effecting rotation of the driven member in response to rotation of the drive member, a cylinder-piston arrangement on the frame for displacing the inner ring relative to the rotary axis of the drive member to vary the rate of rotation of the driven member relative to the drive member, and an endless member trained around the sprocket and the driven member.
A bicycle comprising a frame, a pair of wheels supporting said frame, a sprocket fixed to one of said wheels, a drive member rotatably carried by said frame, a pair of pedals connected to said drive member, a plurality of links carried by said drive member for common rotation therewith and for pivotal movement relative thereto, a driven member, an inner guide ring, means supporting said inner guide ring on said frame for transverse movement relative to the rotary axis of said drive member, means on each of the outer ends of said links and on said driven member and on said guide ring for mounting said driven member for common movement with said guide ring and for rotation relative thereto and for effecting rotation of said driven member in response to rotation of said drive member, means on said frame for displacing said guide ring relative to the rotary axis of said drive member to vary the rate of rotation of said driven member relative to said drive member, and an endless member trained around said sprocket and said driven member.
A bicycle comprising a frame, a pair of wheels supporting said frame, a first sprocket fixed to one of said wheels, a drive member rotatably carried by the frame, a pair of pedals connected to said drive member, a plurality of links carried by said drive member for common rotation therewith and for pivotal movement relative thereto, each of said links having, at the outer end thereof, a guide post and a pivotally mounted pawl member, an outer ring having an annular internal surface engaging said guide posts and fixedly including a second sprocket and an internally projecting ratchet wheel, an inner ring, means supporting said inner ring on said frame for transverse movement relative to the rotary axis of said drive member, said inner ring having an outer annular surface engaging said guide posts and including a cam surface, each of said pawl members including a pawl part movable into engagement with said ratchet wheel to effect rotation of said outer ring in response to rotation of said drive member, and a cam part engageable with said cam surface to displace said pawl part out of engagement with said ratchet wheel, means biasing said pawl members toward positions of engagement of said pawl parts with said ratchet wheel, means on said frame for displacing said inner ring relative to the rotary axis of said drive member to vary the rate of rotation of said outer ring relative to said drive member, and a sprocket chain trained around said first and second sprockets.
A variable speed transmission comprising a support, a drive member rotatably carried by said support and adapted to be rotated by a power input source, a plurality of links carried by said drive member for common rotation therewith and for pivotal movement relative thereto, a driven member, an inner guide ring, means supporting said inner guide ring on said support for transverse movement relative to the rotary axis of said drive member, means on each of the outer ends of said links and on said driven member and on said guide ring for mounting said driven member for common movement with said guide ring and for rotation relative thereto, and for effecting rotation of said driven member in response to rotation of said drive member, and means on said support for displacing said guide ring relative to the rotary axis of said drive member to vary the rate of rotation of said driven member relative to said drive member.
Dependencies are inferred from the claim text.