Roller chain wave gear drive

Details Roller chain wave gear drive Roller chain wave gear drive

1990-02-23

1991-10-01

Bui, Thuy M.

Endless belt power transmission systems or components

Positive drive pulley or guide roll

With particular belt

F16H 706

Patent

active

050529846

ABSTRACT:
A drive mechanism has a cam with dual outwardly-facing elliptical cam surfaces axially-spaced across a gap and an arcuate wave gear segment with an inwardly-facing multi-toothed cam track annularly positioned in opposition to the gap. A chain has linked roller assemblies with first and third rollers that ride on the dual cam surfaces and second rollers of larger diameter that ride on the cam track and are held against axial displacement by travel in the gap. A differential exists over the same distance between the number of rollers and the number of teeth of the cam track. The cam surfaces drive the roller assemblies in a travelling wave along the cam track to drive the chain at a reduced speed around the cam. A drive winch assembly has link plates joining the roller assemblies on both sides of each roller to provide improved force distribution from one chain segment to the next.

REFERENCES:
patent: 3468175 (1969-09-01), Rabek
patent: 3507159 (1970-04-01), Batty
patent: 4713985 (1987-12-01), Ando
patent: 4736654 (1988-04-01), Ren
patent: 4861319 (1989-08-01), Kemp, Jr.

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