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Pneumatic-hammer

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Pneumatic hammer

Details

Inventors: Liao, Walter;
Assignee:
Primary Examiner: Smith; Scott A.
Assistant Examiner:
Attorney, Agent or Firm:

A pneumatic hammer includes a piston rod extending from an aperture defined through the casing and a collar member is mounted to the piston rod and engaged with the aperture so as to limit the piston rod from shaking when the piston rod reciprocatingly moves. The collar member is easily removed from the aperture so as to mount a tube to the piston rod and a hammer head is therefore connected to the lower end of the piston rod.

DETAILED DESCRIPTION In accordance with one aspect of the present invention, a pneumatic hammer is provided and comprises a casing having a neck extending therefrom and a cylinder received in the casing.
A piston rod extending from the piston and extends through the neck.
The casing has an aperture defined therethrough and the neck communicates with the aperture.
The piston rod has a flange extending radially outward therefrom.
A collar member is mounted to the piston rod and engaged with the aperture of the casing.
The main object of the present invention is to provide a pneumatic hammer having a collar member which is engaged with the aperture in the casing so that the piston rod extending through the aperture moves without asking.
Further objects, advantages, and features of the present invention will become apparent from the following detailed description with appropriate reference to the accompanying drawings.

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