Screw bolt, nut and ball bearing assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Sep 28, 1999
filing date -
Mar 5, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention discloses screw bolt and nut with lubricant oil contained ball bush bearing. There is a deep oil storage hole formed in the nut parallel to axial direction of the bolt for storing the lubricant oil. An oil nipple or an oil packing is provided at one end of the deep oil storage hole for preventing leakage of the lubricant oil. A threaded oil dripping hole intersecting the deep oil storage hole with an oil containing member therein is formed in the nut thereby causing the lubricant oil to drip gradually into the spiral grooves and lubricate the rolling balls thereof. The oil containing member can be made of felt, wool, cotton (cloth or thread) or the like. Furthermore, an oil adjusting screw is provided with the oil dripping hole for controlling the flow rate of lubricant oil into the spiral grooves.
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