Resources Contact Us Home
Continuously variable transmission

Image Number 2 for United States Patent #5129272.

A variable speed transmission transmits power between an input and output in which a pinion gear, a rotor and a cam are mounted for relative rotation therebetween. First and second gear rack pairs have opposite facing toothed gear racks which are spaced apart sufficiently to receive the pinion gear and cam therebetween when the pinion gear engages at least one of the gear racks, and an outer surface of the cam is adjacent at least one of the gear racks. Structure is provided to prevent contact between the rack teeth and the outer surface of the cam. First and second rack supports support the rack pairs against lateral movement to ensure full engagement between the pinion and sequentially engaged racks. The rack supports slidingly engage the rotor to transmit power therebetween in such a manner that a resultant force vector from contact between the pinion gear and gear rack passes closely adjacent a point of contact between a rack support and the rotor. Teeth of the gears have inclined tooth tip end faces to facilitate meshing.

  Recently Added Patents
Thermoplastic resin composition
Crowd validated internet document witnessing system
Method and apparatus for networked modems
Electrical terminal
Lens system
Soybean variety XB51J12
Calibration of quadrature imbalances using wideband signals
  Randomly Featured Patents
Treatment of viral disease in swine
Method for producing agglomerated material
Method and apparatus for controlling fuel vapor, method and apparatus for diagnosing fuel vapor control apparatus, and method and apparatus for controlling air-fuel ratio
(Meth)acrylic ester binders from glycolyzed aromatic polyesters
Portable cooled merchandizing unit with customer enticement features
Push-out of low priority signals from switch buffers
Gas turbine motor drive
Methods and circuits for testing programmable logic
Water soluble graft copolymers of lignin, methods of making the same and uses therefore
Catheter based surgical methods and apparatus therefor