Collet chuck and the like

Claim 2

A chuck comprising a body having a bore; a collet arranged to be radially contracted when axially moved in the bore in said body; a nosepiece on said body for so axially moving said collet; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of a tool to prevent axial withdrawal of the tool from said collet and having an outer end which is substantially flush with the exterior surface of said collet and in close proximity to the wall of the bore in said body; and an axially disposed retainer pin received in axially aligned openings in said collet and locking pin for retaining said locking pin in said collet.

Claim 3

The chuck of claim 1 wherein one of said openings in said collet and locking pin is larger than said retainer pin to permit limited radial movement of said locking pin for axial insertion of the tool shank shoulder therepast prior to insertion of said collet into the bore of said body.

Claim 4

The chuck of claim 1 wherein the opening in said locking pin is larger than said retaining pin to permit limited radial movement of said locking pin for axial insertion of the tool shank shoulder therepast prior to insertion of said collet into the bore of said body.

Claim 5

A chuck comprising a body having a bore; a collet arranged to be radially contracted when axially moved in the bore in said body; a nosepiece on said body for so axially moving said collet; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of a tool to prevent axial withdrawal of the tool from said collet and having an outer end which is substantially flush with the exterior surface of said collet and in close proximity to the wall of the bore in said body; and an axially disposed, laterally flexible retainer pin received in axially aligned openings in said collet and locking pin for retaining said locking pin in said collet and for permitting yieldable radial inward movement of said locking pin to radially overlap the tool shank shoulder axially inserted past the inner end of said locking pin.

Claim 6

A chuck comprising a body having a bore; a collet arranged to be radially contracted when axially moved in the bore in said body; a nosepiece on said body for so axially moving said collet; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of a tool to prevent axial withdrawal of the tool from said collet and having an outer end which is substantially flush with the exterior surface of said collet and in close proximity to the wall of the bore in said body; and an axially disposed, laterally flexible retainer pin received in axially aligned openings in said collet and locking pin for retaining said locking pin in said collet and for permitting yieldable radial inward movement of said locking pin to radially overlap the tool shank shoulder axially inserted past the inner end of said locking pin.

Claim 7

A chuck comprising a body having a bore; a collet arranged to be radially contracted when axially moved in the bore in said body; a nosepiece on said body for so axially moving said collet; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of a tool to prevent axial withdrawal of the tool from said collet and having an outer end which is substantially flush with the exterior surface of said collet and in close proximity to the wall of the bore in said body; and said collet having retainer means to permit limited radial movement of said locking pin for axial insertion of the tool shank shoulder therepast prior to insertion of said collet into the bore of said body, said retainer means comprising an axially disposed retainer pin in said collet extending into an axial opening in said locking pin which has a radial dimension larger than that of said retainer pin to permit such limited radial movement of said locking pin.

Claim 8

A chuck comprising a body having a bore; a collet arranged to be radially contracted when axially moved in the bore in said body; a nosepiece on said body for so axially moving said collet; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of a tool to prevent axial withdrawal of the tool from said collet and having an outer end which is substantially flush with the exterior surface of said collet and in close proximity to the wall of the bore in said body; and said collet having retainer means to permit limited radial movement of said locking pin for axial insertion of the tool shank shoulder therepast prior to insertion of said collet into the bore of said body, said retainer means comprising an axially disposed retainer pin in said collet extending into an axial opening in said locking pin which has a radial dimension larger than that of said retainer pin to permit such limited radial movement of said locking pin.

Claim 9

The chuck of claim 5 wherein said retainer pin is laterally flexible and has axially spaced end portions respectively secured to said collet and locking pin for yieldable radial inward movement of the latter to a position whereat the inner end thereof radially overlaps the tool shank shoulder.

Claim 10

A chuck comprising a body having a cylindrical bore terminating in parallel, axially spaced apart frustoconical cam surfaces; a cylindrical contractible collet adapted to be axially inserted into said bore and having parallel frustoconical cam surfaces adapted to engage the respective axially inner and outer cam surfaces in said body; said collet having an axially outer head portion beyond the axially outer cam surface thereof; a nosepiece on said body for engaging said head portion and thus moving said collet axially in said body to contract said collet into gripping engagement with a tool shank therewithin; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of such tool to prevent axial withdrawal of the tool from said collet and having an outer end substantially flush with the axially outer cam surface of said collet and with the adjoining cylindrical and head portions; a retainer pin secured in an axial opening in said head portion and extending into an axial opening in the axially outer side of said locking pin which has a radial dimension larger than that of said retainer pin to permit limited radial movement of said locking pin for axial insertion of the tool shank shoulder therepast prior to insertion of said collet into the bore of said body.

Claim 11

A chuck comprising a body having a cylindrical bore terminating in parallel, axially spaced apart frustoconical cam surfaces; a cylindrical contractible collet adapted to be axially inserted into said bore and having parallel frustoconical cam surfaces adapted to engage the respective axially inner and outer cam surfaces in said body; said collet having an axially outer head portion beyond the axially outer cam surface thereof; a nosepiece on said body for engaging said head portion and thus moving said collet axially in said body to contract said collet into gripping engagement with a tool shank therewithin; a radially disposed locking pin in said collet having an inner end adapted to radially overlap a shoulder on the shank of such tool to prevent axial withdrawal of the tool from said collet and having an outer end substantially flush with the axially outer cam surface of said collet and with the adjoining cylindrical and head portions; a retainer pin secured in an axial opening in said head portion and extending into an axial opening in the axially outer side of said locking pin which has a radial dimension larger than that of said retainer pin to permit limited radial movement of said locking pin for axial insertion of the tool shank shoulder therepast prior to insertion of said collet into the bore of said body.

Claim 12

The chuck of claim 7 wherein said retainer pin is laterally flexible and has its axially inner end secured to said locking pin adjacent the axially inner side thereof for yieldable movement of said locking pin radially inward to a position whereat said inner end radially overlaps said tool shank shoulder.