Clearance pole assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 18, 1999
Grant Date -
N/A
app pub date -
Oct 18, 1996
filing date -
Oct 18, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An assembly, preferably comprising a clearance pole, includes a first pole element with a first horizontal portion and a second vertical portion, and a second tubular pole element mounted to the ground, extending vertically, and receiving the first pole second portion. The first and second pole elements are mounted so that the first element is rotatable with respect to the second about a vertical axis. The slanted surface of an ultra-high molecular weight polyethylene block acts as a cam follower engaging a rod, bar, or tube which acts as a cam, the structures biasing the first pole element first portion to a home position. A dry lubricant is provided between the pole element bearing surfaces to provide relatively friction-free rotation between them.
First Claim
Other Claims data not available