Hand-held tool with displaceable spring loaded handle

Details Hand-held tool with displaceable spring loaded handle Hand-held tool with displaceable spring loaded handle

1989-11-20

1991-06-25

Goldberg, Howard N.

Tool driving or impacting

Including means to vibrationally isolate a drive means from...

Handle type holder

1731621, B25D 1704

Patent

active

050258702

ABSTRACT:
A portable hand-held tool, such as a hammer drill or chisel hammer, includes a housing having a main vibration axis and a handle displaceably secured to the housing and movable toward the housing against compression springs. The springs have an axis of compression disposed at an angle to the main vibration axis. When the handle is displaced toward the housing, the spring is compressed. At the same time, however, the increased force of the spring is compensated by the increase in the angle of the spring relative to the main vibration axis. As a result, though the spring force increases, its component acting in the main vibration axis direction is reduced, and the spring force acting in the main vibration axis direction remains constant.

REFERENCES:
patent: 4282938 (1981-08-01), Minamidate
patent: 4711308 (1987-12-01), Blaas et al.
patent: 4800965 (1989-01-01), Keller

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