Vibration-damping structure for electric hammer

Details Vibration-damping structure for electric hammer Vibration-damping structure for electric hammer

1995-03-17

1996-06-04

Smith, Scott A.

Tool driving or impacting

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

Handle type holder

2671413, B25D 1700

Patent

active

055224660

ABSTRACT:
A vibration-damping apparatus for an electric hammer unit is provided. This vibration-damping apparatus is provided with the so-called transatory unit including elastic bars disposed between elastic damper members connected to a tool body and a handle of the electric hammer unit, respectively, for absorbing relative displacement of the elastic damper members caused by vibrations produced by the tool body during use. The vibration-damping apparatus further includes a stopper member attached to the elastic damper member attached to the handle so as to engage a chamber formed in the elastic damper member attached to the tool body for preventing the handle from being dislodged from the tool body even when the handle is swung laterally by a hammer operator. Additionally, each of the elastic bars includes a large-diameter portion and a small-diameter portion so as to allow the large-diameter portion to be deformed toward the small-diameter portion during the relative displacement of the elastic damper members for increasing the life of the bars.

REFERENCES:
patent: 3972119 (1976-08-01), Bailey
patent: 4800965 (1989-01-01), Keller
patent: 5038480 (1991-08-01), Naslund
patent: 5052500 (1991-10-01), Ohtsu
patent: 5370193 (1994-12-01), Sippus et al.
patent: 5400860 (1995-01-01), Best et al.

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