Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including mechanism for shifting belt axially on spaced...
Patent
1977-11-11
1981-10-20
Scott, Samuel
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Including mechanism for shifting belt axially on spaced...
474146, 474237, 474272, F16H 708, F16G 516
Patent
active
042953839
ABSTRACT:
A variable speed drive of the type having opposed, and parallel-arranged, frusto-conical shaped rollers over which a flat endless belt is trained. The belt is shiftable axially along the length of the rollers to produce an infinitely variable drive between the input and output shafts. The drive mechanism is enclosed in a case and the drive is adjusted from the outside of the case. The belt is properly assembled during assembly by utilizing a belt of known size and arranging for the location of the tapered roller shafts in the case in the precise manner so that the belt is brought to its final proper tension when the second roller is assembled in its preselected openings in the case.
REFERENCES:
patent: 1000633 (1911-08-01), Stauffer
patent: 1098983 (1914-06-01), Severy et al.
patent: 1256418 (1918-02-01), Yocum
patent: 1874905 (1932-08-01), Coffey
patent: 2957783 (1960-10-01), Dach et al.
patent: 3394602 (1968-07-01), Coghill
patent: 3906809 (1975-09-01), Erickson
patent: 4027545 (1977-06-01), White, Jr.
Nilles James E.
Ratliff, Jr. Wesley S.
Scott Samuel
W. R. Grace & Co.
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