US 4,081,038 AGranted

Hand held impact device

AssigneeAtlas Copco Aktiebolag

InventorsSture R. Andersson, Jarl J. Blomberg, Heino Elmessaar

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Abstract

A hand held impact device comprising a housing and an impact mechanism located therein. The housing is provided with an opening at its front end through which opening a working tool is introducable to receive impacts from the impact mechanism. A maneuver handle for direct, manual guidance of the working tool is freely displaceable along the working tool shank and is formed with a rear annular recess for being attachable to a cylindrical neck portion on the housing. The neck portion is coaxial with the working tool opening and forms a coupling means for the maneuver handle. The neck portion is provided with a groove with which spring biased balls on the maneuver handle are arranged to cooperate in order to releasably retain the maneuver handle in its supported position on the housing. The maneuver handle comprises a steel socket and a rubber sleeve which extends ahead of the steel socket to form a resilient, vibration insulating grip element.

Claims11

Dependent claims

A hand held impact device comprising:

a housing having an impact mechanism located therein, a front opening for receiving the shank of a working tool, and a working tool retaining means,
a sleeve shaped maneuver handle for receiving the working tool shank therethrough for manual guidance of the working tool, said sleeve shaped maneuver handle having an internal diameter at least as large as the diameter of said tool shank opening of said housing and larger than the diameter of the working tool shank passing therethrough, and being freely manually displaceable along the shank of the working tool during working, and
releasable coupling means selectively coupling said maneuver handle to said housing such that said housing releasably supports said maneuver handle in coaxial relationship with said tool shank opening with said tool shank passing through said sleeve shaped maneuver handle,
said sleeve shaped maneuver handle comprising a flexible portion extending ahead of said releasable coupling means in the working direction and which is manually compressible into contact with the working took shank, said flexible portion comprising at least one vibration insulating element for insulating an operator from vibrations of the working tool.

1 more element

Dependencies are inferred from the claim text.