Back to results
US 4,464,078 AGranted
Locking mechanism for telescoped poles
AssigneeUnger Enterprises, Inc.
InventorMichael Vorobyov
Life of this patent
Estimating the term…
Abstract
A locking mechanism for telescoped poles includes an eccentric cam and a roller which becomes trapped behind axially extending ribs formed on the interior of the outermost pole or on the exterior of the eccentric cam to enhance the resistance of the locking mechanism to unintended unlocking movement.
Claims8
In a locking mechanism for telescoped poles of the type including a body having an eccentric cam surface carried along a portion of an inner one of the poles, and a roller movable along the rise of said eccentric cam upon rotational movement of said pole relative to an outer tubular pole in telescoped relation therewith;
- the improvement comprising a continuous series of circumferentially spaced axially and radially inwardly extending surface discontinuities on the inner surface of said outer pole and providing abutments resisting rotation of said roller in an unlocking direction of said locking mechanism.
Dependencies are inferred from the claim text.