Quarter turn accessory coupling apparatus
First Claim
Patent Images
1. A combined rotary hand tool and accessory attachment, comprising:
- a rotary hand cool having an output shaft and a nose end associated with said shaft;
an accessory attachment having a mounting portion configured for releasable attachment to said nose end;
an accessory formation provided on said nose end and said mounting portion and configured so that said mounting portion is securable upon said nose end upon an approximate ¼
relative rotation;
said engagement formation includes at least one tooth with a middle portion and a pair of ends, said middle portion being curved in the direction of a longitudinal axis of the tool so that said middle portion is farther from an end of said nose than said ends of said at least one tooth;
said at least one tooth defining a track for engagement of a corresponding member of the other of said nose end and said mounting portion so that upon engagement in said track, and rotation of said attachment relative to said engagement formation said approximate ¼
relative rotation, said member moves from said end of said at least one tooth to said middle portion and thus is axially displaced away from said end of said nose.
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Abstract
A combined rotary hand tool and accessory attachment includes a rotary hand tool having an output shaft and a nose end associated with the shaft. An accessory attachment has a mounting portion configured for releasable attachment to the nose end and an engagement formation provided to the nose end and the mounting portion and configured so that the mounting portion is securable upon the nose end upon an approximate ¼ relative rotation.
23 Citations
18 Claims
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1. A combined rotary hand tool and accessory attachment, comprising:
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a rotary hand cool having an output shaft and a nose end associated with said shaft;
an accessory attachment having a mounting portion configured for releasable attachment to said nose end;
an accessory formation provided on said nose end and said mounting portion and configured so that said mounting portion is securable upon said nose end upon an approximate ¼
relative rotation;
said engagement formation includes at least one tooth with a middle portion and a pair of ends, said middle portion being curved in the direction of a longitudinal axis of the tool so that said middle portion is farther from an end of said nose than said ends of said at least one tooth;
said at least one tooth defining a track for engagement of a corresponding member of the other of said nose end and said mounting portion so that upon engagement in said track, and rotation of said attachment relative to said engagement formation said approximate ¼
relative rotation, said member moves from said end of said at least one tooth to said middle portion and thus is axially displaced away from said end of said nose.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A combined rotary hand tool and accessory attachment, comprising:
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a rotary hand tool having an output shaft and a nose end associated with said shaft, said nose end having a shoulder and at least one elongate tooth with a middle portion and a pair of ends, said shoulder and said tooth having a curved portion in the axial direction away from an end of said nose end and defining a curved track therebetween;
an accessory attachment having a mounting portion configured for releasable attachment to said nose end and including at least one inwardly radially projecting boss dimensioned for slidable engagement in said track, such that, upon engagement, as said attachment is rotated relative to the nose end, approximately ¼
rotation will secure said attachment to the nose end and during said rotation, said at least one tooth is configured so that said at least one boss moves from one of said ends of said at least one tooth to said middle portion and thus is axially displaced away from said nose end.- View Dependent Claims (15, 16, 17)
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18. An accessory attachment configured for use with a rotary hand tool having an output shaft and a nose end associated with the shaft, the nose end having a shoulder and at least one elongate tooth with a middle portion and a pair of ends, said shoulder and said tooth having a curved portion in the axial direction away from an end of said nose end and defining a curved track therebetween, said attachment comprising:
an accessory attachment including a mounting portion dimensioned for engagement upon the nose end and including at least one inwardly radially projecting boss dimensioned for slidable engagement in the track, such that, upon engagement, as said attachment is rotated relative to the nose end, approximately ¼
rotation will secure said attachment to the nose end and during said rotation, said at least one tooth is configured so that said at least one boss moves from one of said ends of said at least one tooth to said middle portion and thus is axially displaced away from said nose end.
Specification