Patent ID: 8469425
Filing Date: 2013-06-25
Classification: B25G,F16B,Y10T

Abstract:
1. An extension tool for extending a device from an operator, comprising: a first pole defining an interior bore and a first exterior surface with said first pole extending between a first end and a second end; a handle defined in proximity to said first end of said first pole; a second pole defining a second exterior surface with said second pole extending between a first end and a second end; a mounting secured to said second end of said second pole for mounting the device thereon; a first bushing defining an internal bore and an exterior surface and secured within said internal bore of said first pole; a second bushing defining an internal bore and an exterior surface and secured to said exterior surface of said second pole; said second pole partially disposed in said first pole with said internal bore of said first bushing slidably engaging with said exterior surface of said second pole and with said exterior surface of said second bushing slidably engaging with said internal bore of said first pole for enabling said second pole to be slidably displaced relative to said first pole; a plurality of apertures defined in said second pole; a collar secured to said second end of said first pole having a pin aperture; a pin slidably engaging within said collar between a retracted position and a protruded position; a spring for biasing said pin into said protruded position for extending into a selected one of said plurality of apertures of said second pole for fixing the position of said second pole relative to said first pole; a pin displacer mounted to said collar for moving said pin into said retracted position for permitting displacement of said first pole relative to said second pole; an upper telescoping stop comprising said first bushing cooperating with said second bushing to limit an outward movement of said second pole relative to said first pole upon engagement of said first bushing with said second bushing; said interior bore of said first pole has a substantially circular cross-section; said second pole defining a second exterior surface having a substantially circular cross-section with a chord defining a flatten portion of said substantially circular cross-section; an anti-rotation insert extending from said collar into said interior bore of said first pole and positioning adjacent to said chord for inhibiting rotation between said second pole relative to said first pole; and a lubricant sheet coupled to said anti-rotation insert for positioning between said flatten portion and said anti-rotation insert and reducing friction between said second pole and said anti-rotation insert.