US 4,535,653 AGranted

Ratio speed adaptor

OwnerBrian Coburninventor

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Abstract

The present invention discloses a speed transformer adaptor comprising an input shaft and an output shaft and a plurality of gear systems coaxially assembled within a casing. The gear systems individually comprise a rotatable member having a first portion forming an externally toothed sun gear and a second cylindrical portion having internal gear teeth. The externally toothed sun gear portion of each gear system is coaxially positioned within the cylindrical portion of the adjacent gear system. A pinion gear is disposed within the cylindrical portion of each gear system for engaging the sun gear and the internally toothed gear to transmit power therebetween. A clutch is provided and when not engaged allows the adaptor to function to provide high speed rotation of the output shaft with low speed rotation of the input shaft, and when slidably engaged allows the input shaft, casing, gear systems and output shaft to rotate in unison to provide a 1:1 input/output ratio. The adaptor is also reversible to provide a reduction in speed from the input speed of rotation to the output speed of rotation.

Claims3

Dependent claims

A speed transformer adaptor comprising:

a substantially cylindrical casing;
a first gear system coaxially and rotatably positioned in fixed alignment within said casing comprising a first portion forming a drive shaft extending beyond one end of said casing, and a second integral cylindrical portion having internal gear teeth;
a second gear system coaxially and rotatably positioned within said casing and in fixed longitudinal alignment with said first gear system comprising a first portion forming a sun gear coaxially positioned within the cylindrical portion of said first gear system and having external gear teeth, and a second integral cylindrical portion having internal gear teeth;
a first pinion gear disposed in fixed position within the cylindrical portion of said first gear system and meshing with said sun gear of said second gear system and said internal gear of the cylindrical portion of said first gear system;
a third gear system coaxially and rotatably positioned within said casing and in fixed longitudinal alignment with said first and second gear systems comprising a first portion forming a sun gear coaxially positioned within the cylindrical portion of said second gear system and having external gear teeth, and a second integral portion forming a drive shaft extending beyond the other end of said casing;
a second pinion gear disposed in fixed position within the cylindrical portion of said second gear system and meshing with the sun gear of said third gear system and the internal gear of the cylindrical portion of said second gear system;
and
a clutch member slidably mounted on said drive shaft of said first gear system and adapted to slidably engage said casing whereby to interlock said casing and gear sytems to provide a direct drive between said input and output shafts.

5 more elements

Dependencies are inferred from the claim text.