Quick change connector for grinding wheel
Assignee3M Innovative Properties Company
InventorEric W. Nelson
Life of this patent
Estimating the term…
Abstract
An abrasive article for a grinder having a motor-driven, externally-threaded spindle. The abrasive article includes a molded abrasive disk with an integrally molded fastener. The molded abrasive disk includes abrasive particles disbursed in a binder. The molded abrasive disk has a first major surface, a second major surface and an integrally molded fastener. The fastener has a body portion with an aperture and first and second ends, an outwardly extending flange with a front surface at the first end, and an inwardly extending flange including a single internal thread at the second end. The fastener is molded into the molded abrasive disk so that the front surface does not extend above the first major surface.
Claims20
An abrasive article for a grinder having a motor-driven, externally-threaded spindle, comprising:
- a molded abrasive disk comprising abrasive particles distributed in a binder, the abrasive disk comprising a first major surface and a second major surface;
- and
- a fastener comprising a body portion with an aperture and first and second ends, an outwardly extending flange with a front surface at the first end, and an inwardly extending flange comprising a single internal thread at the second end, the fastener being molded into the abrasive disk so that the front surface does not extend above the first major surface.
A method of forming an abrasive article for a grinder having a motor-driven, externally-threaded spindle, comprising the steps of:
- preparing a mixture of abrasive particles dispersed in a polymeric binder;
- pouring the mixture into a form;
- positioning a fastener with a single internal thread in the mixture so that a front surface of the fastener does not extend above a first major surface of the mixture;
- curing the polymeric binder;
- and
- removing the abrasive article from the form.
A method of forming an abrasive article for a grinder having a motor-driven, externally-threaded spindle, comprising the steps of:
- preparing a mixture of abrasive particles dispersed in a polymeric binder;
- positioning a front surface of a fastener having a single internal thread on a bottom surface of a form
- pouring the mixture into a form around the fastener;
- curing the polymeric binder;
- and
- removing the abrasive article from the form.
Dependencies are inferred from the claim text.