Conveyors: power-driven – With means to facilitate working – treating – or inspecting... – Means engaging conveyor or load on a conveyor to align load...
Patent
1993-10-13
1994-12-06
Gastineau, Cheryl L.
Conveyors: power-driven
With means to facilitate working, treating, or inspecting...
Means engaging conveyor or load on a conveyor to align load...
198750, B65G 1564
Patent
active
053702140
ABSTRACT:
It is an object of the invention to provide a movable member feed device which is able to set or control the position of an intermediate support so that it can increase the natural vibration frequency of a feed screw shaft effectively to thereby reduce the vibration of the feed screw shaft. The movable member feed device according to the present invention includes an intermediate support frame supported by a linear movement bearing fitted with a guide rail and free to move in the axial direction thereof, an intermediate support nut threadedly engaged with a feed screw shaft through a ball and supported by the intermediate support frame in such a manner that it is prevented from moving in the axial direction thereof with respect to the intermediate support frame but is free to rotate, an auxiliary feed screw having an axis parallel to a feed screw shaft an intermediate support feed nut threadedly engaged with an auxiliary feed screw and fixed to the intermediate support frame, and auxiliary feed screw drive means which moves the intermediate support frame according to the rotation of the feed screw shaft.
REFERENCES:
patent: 2885920 (1959-05-01), Livingston
patent: 3109335 (1963-11-01), Gerchow
patent: 4573566 (1986-03-01), Roman
patent: 4768698 (1988-09-01), Brown et al.
Gastineau Cheryl L.
NSK Ltd.
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