Variable speed device
OwnerLeonard Stanley Ackermaninventor
Life of this patent
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Abstract
A variable speed device comprising a pair of discs driven from a source of power each disc having rack teeth forming its surface. The device including also a pinion in mesh with the rack teeth of each disc mounted to be movable radially of the disc to vary the speed of an output shaft in relation to the rotation of said disc.
Claims7
A variable speed transmission comprising an output shaft, a planitating gear of a differential gear train driven by two sun gears, said planitating gear being operatively secured to said output shaft to drive said output shaft, an input shaft, a pair of identical discs driven at the same speed by said input shaft, the upper surface of each of said discs having a surface consisting of rack teeth extending thereacross the rack teeth of said discs lying at 90.degree. to each other, a carriage movable in a plane above said discs normal to the surfaces of said discs and including the axes of said discs, a pair of gear trains mounted in said carriage each including a pinion in mesh with the rack teeth of one of said discs and extending to said sun gears meshing with said planitating gear, the distance between said pinions being the same as the distance between the axes of said discs.
A variable speed transmission comprising an output shaft, a planitating gear means of a differential gear train driven by two sun gears, said planitating gears means being operatively secured to said output shaft to drive said output shaft, an input shaft, a pair of identical disc surfaces driven at the same speed by said input shaft, each of said disc surfaces consisting of rack teeth extending thereacross, the rack teeth of said disc surfaces lying at 90.degree. to each other, a carriage movable in a plane normal to said disc surfaces and including the axes of said discs, a pair of gear trains mounted in said carriage each said gear train including a pinion in mesh with the rack teeth of one of said disc surfaces, a pair of over running clutch means provided in each said gear train between said pinions in mesh with said disc surfaces and said sun gears, whereby said sun gears can be rotated in only one direction regardless of the direction of rotation of said pinions.
Dependencies are inferred from the claim text.