Ball screw device having lubrication warning device

Details Ball screw device having lubrication warning device Ball screw device having lubrication warning device

2007-08-06

2009-06-09

Fenstermacher, David M (Department: 3656)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

C074S424810, C184S006400, C184S006100

Reexamination Certificate

active

07543514

ABSTRACT:
A ball screw device includes a number of bearing members engaged between a ball nut and a screw shaft, and a warning signal generating device for generating a warning signal when the lubricating oil is not good enough to lubricate the ball nut and the screw shaft or when the lubrication for the balls or the bearing members or between the ball nut and the screw shaft has become fail or when the lubricating oil may not be suitably supplied to the balls or the bearing members or between the ball nut and the screw shaft, such that the users may be aware when the lubricating oil is not suitably filled or supplied into the raceway and may refill the lubricating oil into the raceway right away.

REFERENCES:
patent: 4839831 (1989-06-01), Imajo et al.
patent: 5679883 (1997-10-01), Wedeven
patent: 5809829 (1998-09-01), Seto et al.
patent: 6208245 (2001-03-01), Post et al.
patent: 6364058 (2002-04-01), Nishide et al.
patent: 6451744 (2002-09-01), Chang
patent: 6470735 (2002-10-01), Bell
patent: 6865963 (2005-03-01), Takanohashi et al.
patent: 6880676 (2005-04-01), Tsukada et al.

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