Standard-pitch gearing

Details Standard-pitch gearing Standard-pitch gearing

1977-03-16

1978-08-22

Gerin, Leonard Hall

Machine element or mechanism

Gearing

Teeth

F16H 5506

Patent

active

041080173

ABSTRACT:
Involute gearing can be optimized with respect to torque capacity only if the number of pinion teeth is standardized in a fairly narrow range, between about 15 and 40 teeth, depending on the tooth materials, pressure angle and gear ratio. The present invention discloses an alternative system of gearing that standardizes pitch instead of tooth numbers, so that pinions with several hundred teeth can be designed without sacrifice of any torque capacity relative to that of coarse-tooth involute gearing. The use of finer teeth reduces friction, heating and wear, but in particular helps to minimize operating noise.

REFERENCES:
patent: 3937098 (1976-02-01), Rouverol
patent: 4051492 (1977-09-01), Laskin et al.

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