Quickly movable elastically engaging screw-and-nut mechanism

Details Quickly movable elastically engaging screw-and-nut mechanism Quickly movable elastically engaging screw-and-nut mechanism

1997-02-18

1999-10-26

Marmor, Charles A.

Machine element or mechanism

Gearing

Directly cooperating gears

269181, F16H 118

Patent

active

059708123

ABSTRACT:
A screw-and-nut mechanism comprises a supporting seat, one or more semi-nuts and the actuating member thereof, characterized in that the engagement of internal thread on the semi-nut with external threa on the screw is started elastically, then completed and locked by a positive element, and that the disengagement thereafter of the related elements is accomplished positively. Such a mechanism can be used in various kinds jacks, vices, sliding tables of machine tools, as well as other devices which is driven by a screw and desired to pas through its return travel quickly.

REFERENCES:
patent: 4834355 (1989-05-01), Fan
patent: 4923185 (1990-05-01), Fan
patent: 5282392 (1994-02-01), Fan et al.

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