Electric heating – Metal heating – Cutting or disintegrating
Patent
1994-01-11
1996-08-13
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
36447404, B23H 900, B23H 702
Patent
active
055458718
ABSTRACT:
A modified elliptical gear defined by a modified elliptical shape having perpendicularly disposed major and minor axes, and bulged portions projecting outwardly beyond the contour of a true ellipse in peripheral regions between the major and minor axes. A computer is preferably used to rotate a simulated hobbing rack having a row of hobbing teeth around the modified elliptical shape. The outline of the hobbing rack is traced at selected positions during the rack rotation to produce a profile of a modified elliptical gear with projecting gear teeth. A topping shape is superimposed upon the gear profile to selectively top the gear teeth. The modified elliptical gear profile is transmitted to a machining device operable to produce a modified elliptical gear.
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S egalat, How Things Work, pp. 240-243.
Cunningham, Rediscovering the Noncircular Gear, Machine Design, Nov. 1, 1973, pp. 80-83.
Evans Geoffrey S.
Micropump, Inc.
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