Improved screw or nut runner

Details Improved screw or nut runner Improved screw or nut runner

1976-02-11

1977-12-20

Herrmann, Allan D.

192 clutches and power-stop control

Clutch and brake

Peripheral brake

81 524A, 173 12, 188185, 192 56R, 192150, F16D 4320, F16D 6702

Patent

active

040636259

ABSTRACT:
A screw or nut runner for tightening screw joints wherein a speed related braking force is applied upon those rotating parts of the nut runner that are positively coupled to the screw joint, thereby avoiding the influence of the inertia factor upon the obtained torque level. The power transmission of the screw or nut runner comprises a magnetic release clutch. A centrifugal brake is located after the release clutch in the power train for preloading the release clutch by generating a speed related braking force.

REFERENCES:
patent: 1665714 (1928-04-01), Noble
patent: 2020739 (1935-11-01), Porter
patent: 3043273 (1962-07-01), Schott
patent: 3316782 (1967-05-01), Tullis
patent: 3666021 (1972-05-01), Whitehouse
patent: 3974884 (1976-08-01), Gidlund

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