Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1994-02-07
1996-03-19
Marmor, Charles A.
Machine element or mechanism
Gearing
Directly cooperating gears
74409, 748101, F16H 5524, F16H 5712
Patent
active
054995515
ABSTRACT:
The present invention relates to a double-acting type dynamic back clearance relief driving system having two sets of worm shafts coupled with a worm gear, one worm shaft set acting as a prime mover worm shaft and the other acting as a displacement control worm shaft. When the system is driving, one of the worm shaft sets is applied with faster rotary driving motion and always applies forces on the worm gear set. Another worm shaft set is a displacement control worm shaft coupled also with the worm gear set, or an individual worm gear set of the same pitch or different pitch to be locked upon the same shaft. The acting force to be applied constantly on the gear by the force applying worm shaft always causes the displacement control worm shaft to stress the worm gear reversely, and since the worm shaft is irreversibly driven, there is no clearance between the worm gear and the two worm shafts.
REFERENCES:
patent: 1369442 (1921-02-01), Kauffman
patent: 4685346 (1987-08-01), Brackett
patent: 5090267 (1992-02-01), Gramling
patent: 5265488 (1993-11-01), Yang
patent: 5392666 (1995-02-01), Lin
Grabow Troy
Marmor Charles A.
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