Threaded drive

Details Threaded drive Threaded drive

2005-04-05

2005-04-05

Mackey, James P. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to close mold

C074S089390, C074S424810, C425S451700

Reexamination Certificate

active

06875006

ABSTRACT:
The invention relates to a screw mechanism comprised of a screw shaft (1), a screw nut (2) and rolling bodies. When the screw mechanism is subjected to a high static load, the forces are transmitted from the screw shaft (1) to the screw nut (2) by means of the rolling bodies. As the contact surfaces between the rolling bodies, the screw nut (2) and the screw shaft (1) are very small, only relatively weak forces can be transmitted. In order to adapt the screw mechanism to high static loads, using simple construction measures, the surface of the screw shaft (1) between the grooves (4) of the rolling bodies is provided with locking structures which can be form-fittingly connected with complementary locking structures of locking elements (7, 8) which are moveable essentially transversally to the axis of the screw shaft (1).

REFERENCES:
patent: 2623403 (1952-12-01), Terdina
patent: 4984980 (1991-01-01), Ueno
patent: 5378141 (1995-01-01), Aoki
patent: 5426989 (1995-06-01), Uhlmann et al.
patent: 5811139 (1998-09-01), Hehl
patent: 6468449 (2002-10-01), Fujikawa
patent: 44 11 651 (1995-04-01), None
patent: 295 06 066 (1995-07-01), None

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