Meshing gear members

Details Meshing gear members Meshing gear members

1990-09-28

1992-07-14

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

744247, 192 8R, F16H 118, F16H 120

Patent

active

051292769

ABSTRACT:
A drive mechanism has two parallel shafts (2,3) provided with overlapping circumferentially-extending spiral teeth (4,5) of the same hand. The shape and positioning of the teeth is such that when one of the shafts is rotated, the steep flank surfaces (7,9) of its teeth engage the steep flank surfaces (9,7) of the teeth of the other shaft and force it to rotate in the same direction. Unidirectional drive may be obtained by providing each tooth with a gently sloping flank surface (8,10) on one side. The engagement of the gently sloping flank surfaces prevents rotation of the shafts if the driving torque is reversed.

REFERENCES:
patent: 2973660 (1961-03-01), Popper
patent: 3170566 (1965-02-01), Zimmermann
patent: 3481215 (1969-12-01), Howell
patent: 3688597 (1972-09-01), Watson
patent: 3807911 (1974-04-01), Caffrey
patent: 4371324 (1983-01-01), Gustafsson
patent: 4858487 (1989-08-01), Mercier
patent: 4952125 (1990-08-01), Nagai
Marks' Standard Handbook for Mechanical Engineers, McGraw-Hill Book Company, 1987, pp. 8-98. Attachment "A".
Deutschman, Aaron D., "Machine Design; theory and practice", 1975, pp. 602 and 603. Attachment B.

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