Screw and nut device for taking up clearance

Details Screw and nut device for taking up clearance Screw and nut device for taking up clearance

G - Physics

05

G

74/258, 142/48

G05G 23/02 (2006.01) F16B 39/30 (2006.01) F16C 1/22 (2006.01) F16H 55/24 (2006.01)

Patent

CA 1289774

ABSTRACT Device comprising a screw and a nut subjected to an axial force which alternates in opposite directions, the thread of the screw having a given helix angle and a given pressure angle which are so chosen that, in a first direction, termed reversible direction, the screw is capable, under the axial thrust exerted in this direction by a spring, of effecting a translation and a rotation in the nut, and that, in a second direction, termed irreversible direction, opposed to the first direction, the screw undergoing an axial thrust in this second direction by a push-member, can effect neither a translation nor a rotation in the nut. This assembly may be applied to the automatic taking up of play of systems subjected to alternating longitudinal forces, such as shafts of electric motors or cable controls.

536407

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