Machine element or mechanism – Gearing – Teeth
Patent
1978-08-07
1981-04-07
Husar, C. J.
Machine element or mechanism
Gearing
Teeth
F16H 5508
Patent
active
042598753
ABSTRACT:
Gear tooth profiles are disclosed that afford a higher torque capacity than that of previously disclosed fine-pitch gearing. To offset the weakness in bending of fine teeth, the transmitted force is divided among two to five times as many teeth as in conventional gearing, by using very low pressure angles, and the tooth interference that would occur between meshed involute teeth of equally small pressure angle is avoided by using profiles of shorter relative radius of curvature. The tooth flexibility needed to offset tooth separation at the ends of the line of action and to insure an equitable division of the load among the maximum number of teeth is obtained by deepening the dedenda. The resulting tooth form increases torque capacity by maximizing the transverse contact ratio and minimizes operating noise by increasing the axial contact ratio.
REFERENCES:
patent: 1453395 (1923-05-01), Labberton
patent: 1647191 (1927-11-01), Norton
patent: 3824873 (1974-07-01), Rouverol
patent: 3881364 (1975-05-01), Rouverol
patent: 3918315 (1975-11-01), Rouverol
patent: 3937098 (1976-02-01), Rouverol
patent: 3946621 (1976-03-01), Rouverol
patent: 4108017 (1978-08-01), Rouverol
"Gear Handbook," First Edition, Darle W. Dudley, (Edit.), Chapter 5, Sections 5-1 through 5-13.
Design Data Sheet, Nov. 13, 1958, Machine Design Catalog, (Author-C. Tiplitz), p. 161.
Berman Conrad
Husar C. J.
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