B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
B25D 17/08 (2006.01) B25F 1/02 (2006.01)
Patent
CA 2339430
A hammer is provided which enables the orientation of a tool or bit mounted within a tool holder (spindle) of the hammer to be rotated to the required orientation. The hammer comprises a housing part (1) having an aperture therein in which a spindle (2) that is mounted so that the spindle (2) extends out of the housing through the aperture. The spindle (2) is capable of being rotated about its axis to any of a plurality of orientations, so as to alter the orientation of a tool or bit mounted therein. A locking ring (4) is located around the spindle (2) which locking ring can be moved axially along the spindle at least to a limited extend into and out of engagement with the aperture of the housing part (1), but cannot rotate about the spindle (2), so that when the locking ring (4) engages the aperture, it prevents the spindle (2) from rotating with respect to the housing (1). A grip ring (12) is located around the spindle (2) and can be rotated about the axis of the spindle from a normal operating position in which it prevents disengagement of the locking ring (4) from the aperture in the housing. When the grip ring (12) is rotated about the axis of the spindle (12) by the operator of the hammer to a second position, the locking ring (4) is disengaged from the aperture of the housing (1), thereby to allow the spindle (2) to rotate with respect to the housing (1) to a different orientation. Thus, it is possible to form a hammer in which the orientation of the bit can be changed in a particularly simple manner: the operator simply rotates the grip ring (12) to a position in which the spindle lock is released, or at least can be released, and then rotates the grip ring further, to thereby rotate the spindle (2), until the tool or bit is in the correct orientation.
Black & Decker Inc.
Sim & Mcburney
LandOfFree
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