Gear train mechanism having reduced leakage

Details Gear train mechanism having reduced leakage Gear train mechanism having reduced leakage

1995-11-22

1997-12-02

Vrablik, John J.

Rotary expansible chamber devices

Moving cylinder

Rotating

418179, 4182061, 4182065, 4182067, 4182069, F01C 110, F01C 118, F01C 1900, F01C 2110

Patent

active

056928882

ABSTRACT:
A gear train mechanism includes a housing having side walls that are made of a material exhibiting a modulus of elasticity of at least 140 GPa. A pair of shafts is supported by slide bearings in the housing and exhibit a length of at least of 1.3 times the diameter of the shafts. A first gear of external-tooth type is mounted on one shaft and is defined by an addendum diameter, a top land width and a circular pitch, with the top land width being at least 15% of the circular pitch. A second gear is mounted on the other shaft and is in mesh with the first gear, with both gears disposed between the side walls, wherein the side walls have a wall thickness of at least 75% of the addendum diameter.

REFERENCES:
patent: 1837446 (1931-12-01), Kauffman
patent: 2176388 (1939-10-01), Bochmann
patent: 3204564 (1965-09-01), Eltze
patent: 3263425 (1966-08-01), Rohde
patent: 3274894 (1966-09-01), Junger
patent: 3463089 (1969-08-01), Newborough
patent: 4285640 (1981-08-01), Mukai
patent: 4770617 (1988-09-01), Hertell
patent: 4846641 (1989-07-01), Pieters et al.
patent: 5318425 (1994-06-01), Jetzer et al.

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