Machine element or mechanism – Gearing – Interchangeably locked
Patent
1985-04-19
1987-06-09
Braun, Leslie
Machine element or mechanism
Gearing
Interchangeably locked
74409, F16H 308, F16H 5518
Patent
active
046711295
ABSTRACT:
A zero backlash shiftable transmission includes an input shaft and an output shaft coupled through a gear network that is preloaded with a spring arrangement to eliminate the backlash from the engaged surfaces of the gear teeth. There are three positions and no neutral. In the first position a tapered clutch arrangement engages the input shaft directly with the output shaft. In the second or shift position, the clutch engages both the input shaft and the output shaft while the transmission is slowed or stopped for shifting. In the third position, the clutch engages the input shaft with the output shaft through the preloaded gear network. The tapered clutch arrangement provides locked clutch coupling in the first and third positions and provides tolerance for shifting without completely releasing either the input shaft or the output shaft in the shift position.
REFERENCES:
patent: 688516 (1901-12-01), Harris
patent: 778859 (1905-01-01), Hobbs
patent: 1136636 (1915-04-01), Wilkin
patent: 1970385 (1934-08-01), Maybach
patent: 2251342 (1941-08-01), Rauen
patent: 2309864 (1943-02-01), Patterson
patent: 3422724 (1969-01-01), Zankl et al.
patent: 4449866 (1984-05-01), Lohenis
patent: 4458549 (1984-07-01), Schreiner et al.
"Meltron Technical Data Sheet", Series 7, Nov. 1953.
Braun Leslie
Wright Dirk
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