Noiseless spur gears

Details Noiseless spur gears Noiseless spur gears

1977-01-26

1978-08-29

Gerin, Leonard H.

Machine element or mechanism

Gearing

Rotary bodies

74243DR, F16H 5512, F16H 5530

Patent

active

041095456

ABSTRACT:
Spur gears of which the engagement is made noiselessly because of three adjustment functions wherein the central errors of the gears as rotary bodies are compensated by specific method of freeing the wheel center of a gear in a train of gears. The foundation parts (rim parts) of the gear teeth are subjected to qualitative treatment so as to have a large elasticity against maximum bending. The moment of forces working on said teeth are made to have a ring shape and the gears are arranged to have a large backlash. The holding mechanism is constructed so that the rotational center of the ring-shaped gears may be slightly movable in relation with the rotation center of the gear shaft. Backlash due to excessive vibration of the wheel center is prevented by providing a P.C.D. (pitch circle diameter) roller in a part of the holding mechanism together with the linear inclination of teeth center line or the elliptical transformation of the rim parts for the non-fitting teeth or rotational vibration caused by teeth engagement and the non-central rotation of the ring-shaped gear, so that the adjustment functions are transferred to the next sequence.

REFERENCES:
patent: 379022 (1888-03-01), Morgan

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