Vibration damping device for hammers
AssigneeVaughan & Bushnell Manufacturing Company
InventorHoward A. Vaughan, Jr.
Life of this patent
Estimating the term…
Abstract
In a claw-type hammer, a shock-absorbing device is provided which includes an elongate elastic band or cord which captured within grooves of a hickory plug in regions which abut against internal surfaces of a socket into which the plug is press-fit. The plug is dimension and configurated in relation to the socket in the hammer head to provide at least some degrees of freedom of movement of portions of the elastic cord so that the elastic portions can vibrate or oscillate substantially independently of the natural oscillatory vibrations of the hammer head caused by impact. The tendency of the elastic cords is to at least to partially cancel or neutralize and, therefore, dampen the natural vibrations of the hammer head.
Claims13
A shock-absorbing device for a claw hammer or the like comprising:
- an integral steel head and shank forming a handle,
- said steel head being formed with a medial body portion from which said shank extends outwardly, the medial body portion being formed with an elongated socket having an axis substantially in alignment with a longitudinal axis of said shank and wall surfaces defining said socket;
- a vibration damping unit comprising a plug base member formed with a plurality of walls and having a hardness less than the hardness of said steel head, and
- an elongate resilient element having at least end portions, and having a hardness less than the hardness of said plug base member;
- said plug base member being configurated and dimensioned to be receivable within said elongated socket in a press-fit relationship therewith and defining at least one clearance or space between said plug base member and said wall surfaces of said elongated socket, said resilient element being positioned in such a manner that in the assembled condition of said claw hammer when said plug base member is positioned within said elongated socket, at least said end portions of said resilient element are fixed relative to said steel head and base member;
- and
- said plug base member includes grooves formed within said plurality of walls for receiving at least a part of said resilient element, said portions of the resilient element extending at least about a part of an outside periphery of said plug base member;
- whereby in use any harmonic vibrations set up at said steel head and transferred to said plug base member are interrupted and/or dampened by vibrations of said resilient element.
Dependencies are inferred from the claim text.