Gear pump, gear and method

Details Gear pump, gear and method Gear pump, gear and method

1976-10-26

1978-08-15

Gerin, Leonard H.

Machine element or mechanism

Gearing

Teeth

74802, 90 8, F16H 5506, F16H 128, B23F 904

Patent

active

041063619

ABSTRACT:
A relatively simple gear-forming process is disclosed, which enables the production of a set of gears that is especially useful for a particular type of gear pump, and which also produces a set of gears which operates with a high degree of rolling contact. The gears are produced by first forming an initial cutter gear having teeth with cylindrical tips supported by narrow supports, and using this initial cutter on a gear shaper to cut a first gear having bullet-shaped teeth. The first gear can then be used as the cutter on a gear shaper to cut other gears with bullet-shaped teeth or to cut gears with pole-shaped teeth. In a gear pump wherein fluid is forced through an axial passage opening into the space between teeth of the sun gear, the sun gear is formed with pole-shaped teeth while the planetary gear is formed with bullet-shaped teeth.

REFERENCES:
patent: 1341846 (1920-06-01), Gollings
patent: 1646374 (1927-10-01), Wilkin
patent: 1833159 (1931-11-01), Garnett
patent: 3345883 (1967-10-01), Glocker
patent: 3890853 (1975-06-01), Feltz

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