Positioning device for screwing and unscrewing a nut

Details Positioning device for screwing and unscrewing a nut Positioning device for screwing and unscrewing a nut

1987-04-16

1989-11-14

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81125, B25B 2100

Patent

active

048799270

ABSTRACT:
The automatic positioning device for screwing and unscrewing a nut (9) on a screwing element (4) formed, for example, by a pin or a threaded rod comprises an externally threaded bush (24) for transferring the nut (9) and an arrangement for the axial centering and angular wedging of the bush (24) relative to the screwing element (4), to generate a continuous helical slope between the external threads (26) of the bush (24) and the threads (8) of the screwing element (4).

REFERENCES:
patent: 3128990 (1964-04-01), Brooks et al.
patent: 3306140 (1967-02-01), Smiley
patent: 3679173 (1972-07-01), Rerrick et al.
patent: 4207784 (1980-06-01), Exner et al.
patent: 4433828 (1984-02-01), Spiegelman et al.
patent: 4438901 (1984-05-01), Reneau et al.

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