Reduction motor shaft provided with screw type double

Details Reduction motor shaft provided with screw type double Reduction motor shaft provided with screw type double

1984-06-22

1986-05-20

Staab, Lawrence J.

Machine element or mechanism

Gearing

Teeth

74427, 74425, 744247, F16H 5517, F16H 5522, F16H 116, F16H 120

Patent

active

045892997

ABSTRACT:
A reduction motor shaft used, for example, in a wiper motor is disclosed, which is provided with screw type double worms constituting a reduction mechanism part. In this reduction motor shaft, right-handed and left-handed screw type worms are coaxially formed in one end side of the shaft as plural-thread screws at a linked state of tooth profiles of both worms, and further an annular protrusion is formed in a threading boundary between the worms.

REFERENCES:
patent: 3481215 (1969-12-01), Howell
patent: 3581355 (1971-06-01), Schaub
patent: 4282767 (1981-08-01), Guichard
patent: 4369387 (1983-01-01), Haar et al.
patent: 4444071 (1984-04-01), Guichard

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