Machine element or mechanism – Mechanical movements – Rotary to rotary
Patent
1990-08-08
1991-08-06
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to rotary
74112, F16H 2112, F16H 2700
Patent
active
050367161
ABSTRACT:
A mechanical transmission is provided to transmit rotary mechanical motion at a mechanical advantage that is selectively and infinitely variable. An output shaft in an output drive mounting frame is driven by a rotary input drive in an input drive mounting plate. The mechanical advantage at which power is transmitted is governed by the position of the output drive mounting frame relative to the input drive mounting plate. A plurality of separate intermediate links, all having toothed gear sections are driven by the input drive and are sequentially and discontinuously brought into meshed engagement with a drive output gear. The intermediate links are all rotatable independently of each other about a common axis on the output drive mounting frame. Rotation and counter rotation of a worm adjustment to any infinite number of positions shifts the relative positions of the axis of rotation of the power input transfer gear and the axis of rotation of the intermediate links, thereby in turn controlling the mechanical advantage at which power is transmitted.
REFERENCES:
patent: 1162233 (1915-11-01), Goddu
patent: 1508220 (1924-09-01), Frey
patent: 4697469 (1987-10-01), Takamiya et al.
Herrmann Allan D.
Laub David W.
Thomas Charles H.
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