Chucks or sockets – Socket type – Side detent
Reexamination Certificate
2007-10-09
2007-10-09
Fridie, Jr., Willmon (Department: 3722)
Chucks or sockets
Socket type
Side detent
C279S009100, C279S080000, C279S096000
Reexamination Certificate
active
10632977
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.
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Allan Scott W.
Hasan Maz A.
Singh Satnam
Vasudeva Kailash C.
Armstrong R. Craig
Borden Ladner Gervais LLP
Fridie Jr. Willmon
Maxtech Manufacturing Inc.
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