Spring bias wedge in reinforcing rail

Details Spring bias wedge in reinforcing rail Spring bias wedge in reinforcing rail

1998-10-16

1999-08-17

Jeffery, John A.

Machine element or mechanism

Gearing

Teeth

74 8915, F16H 5517

Patent

active

059377020

ABSTRACT:
The reinforced lead screw has a hollow, elongated reinforcing rail surrounding a lead screw and a nut-bearing movable along the reinforcing rail. The nut-bearing has a portion projecting through a slot in the reinforcing rail and includes threads to engage the threads on the lead screw such that when the lead screw is rotated in either direction, the nut will translate along the rail. A wedge is slidably mounted on the nut-bearing and is biased towards a central axis. The wedge has a pair of bearing surfaces which engage surfaces of the reinforcing rail to restrict rotation of the nut-bearing. The rail may be provided with a sleeve-bearing which, in combination with the rail, serves not only as a guide for movement of the nut but lateral support for the lead screw.

REFERENCES:
patent: 4131031 (1978-12-01), Erikson et al.
patent: 4566345 (1986-01-01), Erikson et al.
patent: 5079963 (1992-01-01), Yamamoto et al.
patent: 5689997 (1997-11-01), Schaller

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