Power operated percussion tool having gripping means
AssigneeAtlas Copco Aktiebolag
InventorsUlf K. Arvidsson, Per A. L. Gidlund
Life of this patent
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Abstract
In a hand held power operated percussion tool, the housing (10) is vibration insulated from the impact mechanism to protect the operator from unhealthy vibration forces. In order to form a vibration damped gripping member at or in front of the forward end of the tool housing (10), a sleeve element (20) is supported on the housing (10) for axial adjustability thereon. The sleeve element (20) surrounds the working implement (18) and prevents the operator from using the latter as a grip means. The sleeve element (20) is arrestable in any desired axial position by a conical lock nut (22) threadingly engaging the sleeve element (20) and forming therewith a radially acting clamp.
Claims9
A vibration damped power operated percussion tool, comprising in combination:
- an impact mechanism;
- means on said impact mechanism for operative connection of a working implement thereto;
- a housing supporting said impact mechanism and being vibration insulated relative to said impact mechanism, said vibration insulated housing having a portion extending in given axial direction, and a forward end beyond which said working implement extends;
- a handle at the rear end of said housing for manual support of the tool by an operator;
- a sleeve element extending in said axial direction and being adjustably mounted around at least a portion of said axially extending portion of said vibration insulated housing so as to be adjustable in position relative to said housing in said axial direction;
- said sleeve element, in use of said tool, extending beyond the forward end of said housing, thereby forming an advanced vibration insulated grip means which is grippable by the tool operator during use of the tool;
- and
- arresting means coupled to said sleeve element for arresting movement of said sleeve element relative to said housing for preventing unintentional axial displacement of said sleeve element relative to said housing, said arresting means comprising a friction coupling for frictionally engaging said sleeve element to said housing, and a clamping device operatively coupled to said sleeve element for continuously varying the engagement force of said friction coupling.
Dependencies are inferred from the claim text.