Clay C Peterson

US Patent:

62314327, May 15, 2001

Filed:

Nov 12, 1999

Appl. No.:

9/439118

Inventors:

Clay Peterson - Laguna Woods CA
Michael A. Jackola - Somers MT

Assignee:

Pearl Abrasive Company - Commerce CA

International Classification:

B24B 2300

US Classification:

451350

Abstract:

A floor treatment machine with a torque limiter assembly between a rotating drive linkage and a rotating head for treating a floor surface. The torque limiter assembly includes engaged plates that disengage upon the application of a predetermined torque created when the head slows or stops rotating because of a floor obstruction. Upon the disengagement of the plates, the drive linkage continues to rotate and is less likely to sustain damage from the effect of the floor obstruction on the rotation of the head. The plates may engage each other through a configuration of cooperating teeth and notches. Alternatively, a rotating head can be provided with a built-in torque limiter assembly. This head can be attached to various floor treatment machines. The amount of predetermined torque that causes the plates to disengage may be adjusted as needed for varied floor conditions.