Quick-connect chuck mechanism
AssigneeMaxtech Manufacturing Inc.
InventorsScott W. Allan, Maz A. Hasan, Satnam Singh, Kailash C. Vasudeva
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Abstract
A chuck is provided for retaining the shank of a tool bit or accessory, having a fixed diameter, inserted in a central channel at a distal end of the chuck. At least one torsion spring is mounted axially within a housing and has an inner dimension and shape comparable to the shank's outer dimension and shape. A mechanism winds and unwinds the torsion spring to respectively grip or release said shank, the winding being in a rotational direction consistent with a normal operating rotational direction of said chuck such that said shank tends to further wind the torsion spring for further self-tightening in normal operation.
Claims19
A chuck for retaining the shank of a tool bit or accessory inserted in a central channel at a distal end of said chuck, comprising at least one torsion spring mounted axially within a housing and having an inner dimension and shape comparable to the shank's outer dimension and shape, and mechanical means for winding and unwinding said torsion spring to respectively grip or release said shank, wherein said at least one torsion spring has a resting inner dimension less than said shank's outer dimension, such that said torsion spring must be partially unwound for said shank to be inserted.
Dependencies are inferred from the claim text.