Vibration damper for impact tool
AssigneeAtlas Copco Aktiebolag
InventorNils Carl Hakan Resare
Life of this patent
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Abstract
An impact tool has a vibration damper which vibration damper comprises an envelope which surrounds a working part of the tool and thereby encloses a liquid-like material having damping properties. The liquid-like material is enclosed in a bag for easier handling.
Claims16
In an impact tool comprising an elongated working part (10) which includes a shank portion (11) for connection to an impact machine, a working end (12) and a collar (14) intermediate said shank portion (11) and working end (12), said impact tool transmitting impact energy in its axial direction,
- a vibration damper for damping lateral vibrations is said impact tool, comprising:
- an envelope (30) surrounding a portion of the working part of the tool intermediate said collar and working end;
- a liquid-like material (33) enclosed within said envelope for damping lateral vibrations of said working part;
- and
- bag means (32) situated between said envelope and said working part and containing said liquid-like material within said bag means.
A detachable collar for an impact tool, said impact tool having a cut-down portion along the length thereof intermediate the ends thereof, said collar comprising:
- a ring of elastic material having an internal annular projection which is receivable in said cut-down portion of said tool;
- and
- a metallic ring member surrounding said elastic ring in the vicinity of said internal annular projection for pushing said elastic projection into said cut-down portion of said impact tool for providing a snap action lock of said collar to said impact tool.
Dependencies are inferred from the claim text.