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US 6,261,039 B1Granted
Thread repair insert
OwnerGary Jack Reedinventor
Life of this patent
Estimating the term…
Abstract
An insert for thread repair having an interior thread and a specially formed exterior thread which both precludes upheaval between sides of the cracked material on opposite sides of the crack and draws the crack together, radially inward towards the center of the insert. The insert may include a driving head, either solid or having a central hollow and may include a frangible neck to dissociate the head from the insert.
Claims40
A thread repair insert comprising in combination:
- a sleeve having an interior thread and an exterior thread adapted to be threaded into a hole having a thread pitch complemental to said exterior thread and
- said exterior thread including means to direct a force on said thread pitch radially inward towards an axially longitudinal center line of said sleeve.
A device for receiving a threaded fastener, said device comprising in combination:
- a head including means for coupling to a torque-applying instrumentality;
- a cylindrical sleeve having uniform thickness cross-sectionally, said sleeve extending from said head and including interior threads and exterior threads;
- said exterior threads of said sleeve adapted to be received within a previously tapped threaded hole having threads substantially complemental in form to said exterior threads, and said interior threads adapted to receive the threaded fastener;
- further including means for opposing central axis translation of said device when threaded in the threaded hole wherein said central axis translation opposition means and said exterior threads create opposing forces which preclude said device from disengaging from the threaded hole;
- wherein said central axis translation opposition means includes a shoulder interposed between said head and said sleeve, said shoulder having a greater diameter than the threaded hole;
- and
- wherein said shoulder includes a top surface, a cylindrical side portion extending from said top surface and a cusp located at a lowermost portion of said shoulder.
4 more elements
A device for receiving a threaded fastener, said device comprising in combination:
- a head including means for coupling to a torque-applying instrumentality;
- a cylindrical sleeve having uniform thickness cross-sectionally, said sleeve extending from said head and including interior threads and exterior threads;
- said exterior threads of said sleeve adapted to be received within a previously tapped threaded hole having threads substantially complemental in form to said exterior threads;
- and
- said interior threads adapted to receive the threaded fastener;
- including a shoulder interposed between said head and said sleeve and said shoulder having a top surface, a cylindrical side portion extending from said top surface and a cusp located at a lowermost portion of said shoulder.
3 more elements
A device for receiving a threaded fastener, said device comprising in combination:
- a head including means for coupling to a torque-applying instrumentality;
- a sleeve extending from said head and including interior threads and exterior threads;
- said exterior threads of said sleeve adapted to be received within a threaded hole having threads substantially complemental in form to said exterior threads,
- said interior threads adapted to receive the threaded fastener,
- including means for opposing central axis translation of said device when threaded in the threaded hole wherein said central axis translation opposition means and said exterior threads create opposing forces which preclude said device from disengaging from the threaded hole,
- wherein said central axis translation opposition means includes a shoulder interposed between said head and said sleeve, said shoulder having a greater diameter than the threaded hole, and
- wherein said shoulder includes a top surface, a cylindrical side portion extending from said top surface and a cusp located at a lowermost portion of said shoulder.
4 more elements
A thread repair insert for repairing a cracked threaded hole in a material, the crack is defined as a gap passing through a portion of the threaded hole to define at least two sides of the threaded hole separated from each other, said thread repair insert comprising in combination:
- means to draw the sides of the crack together located on an outer surface of said insert;
- means to preclude disengagement of said thread repair insert from the threaded hole located at a longitudinal extremity of said insert;
- and
- means for receiving a threaded fastener within an interior of said thread repair insert wherein said insert strengthens and seals the cracked threaded hole to a level which effectively allows the fastener to be rigidly retained therein.
1 more element
A thread repair insert for repairing a cracked threaded hole a material, said thread repair insert comprising, in combination:
- a cylindrical shaft having an exterior and a hollow interior;
- said shaft including an interior thread extending along said hollow interior and an exterior thread extending along said exterior of said shaft;
- said exterior thread adapted to be threaded into the cracked threaded hole having a thread pitch complemental to said exterior thread;
- and
- said exterior thread including means for directing a force on the thread pitch radially inwards toward an axially longitudinal center line of said shaft for drawing sides of the crack together.
2 more elements
A device for receiving a threaded member, said device comprising, in combination:
- a cylindrical shaft having an exterior and a hollow interior;
- said cylindrical shaft having an uppermost and a lowermost end and including exterior threads defining a major and minor thread diameter, said exterior threads extending along said shaft and adapted to be received within a threaded hole having threads substantially complemental in form to said exterior threads;
- said cylindrical shaft including interior threads extending along said hollow interior and adapted to receive the threaded member;
- including means for opposing central axis translation of said device when threaded in the threaded hole wherein said central axis translation opposition means and said exterior threads create opposing forces which preclude said device from disengaging from the threaded hole;
- wherein said central axis translation opposition means includes a shoulder disposed at said uppermost end of said shaft distal from said bottom end of said shaft, said shoulder having a greater diameter than said major thread diameter;
- and
- wherein said shoulder includes a cusp located at a lowermost portion of said shoulder.
4 more elements
A device for receiving a threaded member, said device comprising, in combination:
- a cylindrical shaft having an exterior and a hollow interior;
- said cylindrical shaft having an uppermost and a lowermost end and including exterior threads defining a major and minor thread diameter, said exterior threads extending along said shaft and adapted to be received within a threaded hole having threads substantially complemental in form to said exterior threads;
- said device including means cooperating with said exterior threads to both draw the threaded hole radially inward and prevent upheaval shifting of the threaded hold transverse to the radially inward direction;
- said cylindrical shaft including interior threads extending along said hollow interior and adapted to receive the threaded member.
1 more element
A thread repair insert for repairing a threaded hole damaged by having a crack extending in said threaded hole in a material to receive a threaded member therein, said thread repair insert comprising, in combination:
- a cylindrical shaft having an exterior and a hollow interior;
- said cylindrical shaft including an interior thread extending along said interior hollow of said shaft and an exterior thread extending along said exterior of said shaft;
- said exterior threads of said shaft adapted to be received within the threaded hole of the material having threads complemental in form to said exterior threads and a crack running through the hole's threads;
- clamping means for precluding disengagement of said thread repair insert from the threaded hole and for drawing together the hole's threads, sealing the crack;
- and
- said interior threads adapted to receive the threaded member wherein said clamping means precludes rotation of said thread repair insert when said threaded member is being disposed therein.
3 more elements
A device for receiving a threaded fastener, said device comprising in combination:
- a head including means for coupling to a torque-applying instrumentality;
- a sleeve extending from said head and including interior threads and exterior threads;
- said exterior threads of said sleeve adapted to be received within a threaded hole having threads substantially complemental in form to said exterior threads,
- said interior threads adapted to receive the threaded fastener, and
- including a shoulder interposed between said head and said sleeve and said shoulder having a top surface, a cylindrical side portion extending from said top surface and a cusp located at a lowermost portion of said shoulder.
2 more elements
A device for receiving a threaded member, said device comprising, in combination:
- a cylindrical shaft having an exterior and a hollow interior;
- said cylindrical shaft having an uppermost and a lowermost end and including exterior threads defining a major and minor thread diameter, said exterior threads extending along said shaft and adapted to be received within a threaded hole having threads substantially complemental in form to said exterior threads;
- said cylindrical shaft including interior threads extending along said hollow interior and adapted to receive the threaded member, and
- including a shoulder disposed at said uppermost end of said shaft and said shoulder having a cusp located at a lowermost portion of said shoulder.
1 more element
Dependencies are inferred from the claim text.