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US 6,547,259 B2Granted
Master and insert jaw system
AssigneeDura-Hog, Inc.
InventorMichael Fitzpatrick
Life of this patent
Estimating the term…
Abstract
The jaw assembly includes a master jaw and an insert jaw. An engagement surface on the master jaw provides a mounting surface for the insert jaw. The master jaw is contoured to provide a minimum of mass opposite the mounting surface and opposite the engagement surface to minimize the total rotating mass when the jaw assembly is in operation. In operation, a force is applied substantially perpendicular to the engagement surfaces between the insert jaw and master jaw such that the engagement surface experiences the force rather than the insert fastener.
Claims29
A jaw assembly comprising:
- a master jaw comprising a mounting surface having a plurality of teeth and a first and a second mounting aperture therethrough, said first mounting aperture through a contoured portion and a base portion, said second aperture through said base portion, said contoured portion at least partially surrounding said first mounting aperture, said contoured portion extending from said base portion to define an engagement surface substantially perpendicular to said mounting surface;
- and
- an insert jaw removably attachable to said master jaw at said engagement surface, said engagement surface substantially perpendicular to a retention force applied by said insert jaw.
A jaw assembly comprising:
- a master jaw comprising a mounting surface having a plurality of teeth and a first and a second mounting aperture therethrough, said first mounting aperture through a contoured portion and a base portion, said second aperture through said base portion, said contoured portion at least partially surrounding said first mounting aperture, said contoured portion extending from said base portion to define an engagement surface substantially perpendicular to said mounting surface;
- and
- an insert jaw removably attachable to said master jaw at said engagement surface and substantially perpendicular to a retention force applied by said insert jaw.
A chuck assembly comprising:
- a plurality of jaw assemblies, each of said jaw assemblies including a master jaw comprising a mounting surface having a plurality of teeth and a first and a second mounting aperture therethrough, said first mounting aperture through a contoured portion and a base portion, said second aperture through said base portion, said contoured portion at least partially surrounding said first mounting aperture, said contoured portion extending from said base portion to define an engagement surface substantially perpendicular to said mounting surface;
- an insert jaw removably attachable to said master jaw at said engagement surface, said engagement surface substantially perpendicular to a retention force applied by said insert jaw;
- a removable alignment peg mountable into said first aperture of each of said plurality of master jaw assemblies;
- and
- a tension ring having a plurality of helical slots, each of said helical slots operable to receive a respective removable alignment peg to provide an inward radial tension on each of said insert jaws.
2 more elements
A jaw assembly comprising:
- a master jaw;
- and
- an insert jaw removably attachable to said master jaw at an engagement surface, said engagement surface substantially perpendicular to a retention force applied by said insert jaw, said engagement surface comprises a substantially arcuate master jaw engagement surface which defines a master jaw radius and a substantially arcuate insert jaw engagement surface which defines an insert jaw radius, said insert jaw radius larger than said master jaw radius.
A jaw assembly comprising:
- a master jaw including a base portion and a contoured portion, said base portion including a mounting surface having a plurality of teeth and said contoured portion defining an engagement surface substantially perpendicular to said mounting surface;
- and
- an insert jaw removably attachable to said master jaw at said engagement surface and substantially perpendicular to a retention force applied by said insert jaw, said engagement surface comprises a substantially arcuate master jaw engagement surface which defines a master jaw radius and a substantially arcuate insert jaw engagement surface which defines an insert jaw radius, said insert jaw radius larger than said master jaw radius.
Dependencies are inferred from the claim text.