A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
267/103, 74/279,
A01G 3/00 (2006.01) A01D 34/67 (2006.01) A01D 34/90 (2006.01) B25F 5/00 (2006.01)
Patent
CA 1297916
- 28 - ABSTRACT A vibration-damping control handle connectable to the shaft portion of a portable power tool, such as a flexible line trimmer or the like, has an elongated, axially tapered body which coaxially circumscribes the shaft and has an operator handgrip section secured thereto. A first end portion of the body is spaced laterally outwardly from the shaft and is interlocked with a free end portion of a resilient damping member which circumscribes the shaft and is secured to a clamp member releasably locked on the shaft. The opposite end of the handle body is connected to the shaft in a slip-fit relationship therewith so that the body may be laterally pivoted or flexed relative to the shaft against the resilient resistance of the free end portion of the damping member which may be a coiled spring or an annular elastomeric element. In alternate embodiments of the handle the damping member clamp is deleted, so that the damping member is in a slip-fit engagement with the shaft, and is replaced with a specially designed pivot clamp secured to the shaft at the opposite end of the handle body and interlocked with such opposite handle body end. The pivot clamp precludes appreciable axial or rotational movement of the handle body relative to the shaft, but permits the body to be laterally pivoted about its connection to the pivot clamp. In a further embodiment of the handle the pivot clamp is deleted and replaced with a rigid clamp portion which is formed integrally with the handle body and permits it to be laterally flexed about the rigid clamp releasably locked to the shaft. In each embodiment of the handle a resilient connection is provided between the handgrip and the shaft, and both the handle body and the cantilevered portion of the damping member function to absorb and damp shaft vibration, thereby isolating the handgrip section therefrom.
562921
Kirby Eades Gale Baker
White Consolidated Industries Inc.
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