Synchro-clutching screw-and-nut mechanism

Details Synchro-clutching screw-and-nut mechanism Synchro-clutching screw-and-nut mechanism

1992-01-29

1994-02-01

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

269181, F16H 2524, B25B 102

Patent

active

052823920

ABSTRACT:
This invention relates to a new type of screw-and-nut mechanism comprising a screw stem supported in a structure, the screw stem is to engage with a partially threaded nut also contained in the structure and actuated by a lifting means to effect the quick meshing and disengagement of the nut and the screw stem. With the inclusion of a locking device the screw stem can be made to advance and retract slowly as well as quickly. The merit of not requiring the screw stem to move up and down makes in interchangeable with other mechanisms; the three-point-contained feature enables the screw-and-nut mechanism to sustain large axial loads. Its simple structure and easy operation ensures its wide application in bench vices, parallel-jaw vices and sliding tables of machine tools and all kinds of screw-driven devices requiring fast translational motion.

REFERENCES:
patent: 616823 (1898-12-01), Card
patent: 802040 (1905-10-01), Hanimann
patent: 2102602 (1937-12-01), Nash
patent: 2430458 (1947-11-01), Farrell
patent: 2612057 (1952-09-01), Gray et al.
patent: 2672776 (1954-03-01), Elsenheimer
patent: 3007358 (1961-11-01), Vogl
patent: 3492886 (1970-02-01), Naureckas
patent: 3669440 (1972-06-01), Jartasyj et al.
patent: 4395030 (1983-07-01), Eskuchen
patent: 4923185 (1990-05-01), Fan
patent: 5101679 (1992-04-01), Smith et al.

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