Patents by Inventor Harold W. Benedict
Harold W. Benedict has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5924917Abstract: Methods for preparing abrasive articles and novel methods of making abrasive articles are presented. One method includes inserting a fibrous material adjacent an interior surface of a drum. A composition comprising an organic binder precursor material is then placed in the drum, and the drum is rotated such that centrifugal forces distribute the composition, including the organic binder precursor material, uniformly about the fibrous material. The composition is exposed to conditions sufficient to solidify the organic binder precursor material such that an endless, flexible, seamless substrate is formed having an outer surface formed adjacent the interior surface of the drum, an inner surface opposite the outer surface and the fibrous material embedded therein. Coated abrasives formed by this method, as well as other methods, are provided wherein an effective amount of a fibrous reinforcing material is engulfed within an organic polymeric binder material.Type: GrantFiled: October 24, 1997Date of Patent: July 20, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Harold W. Benedict, Donna W. Bange, Gary L. Heacox, Timothy J. Trudeau
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Patent number: 5830248Abstract: A method of making a coated abrasive article and the product thereof, involving the steps of: providing an endless spliceless backing loop substrate; applying fibrous reinforcing material onto a major surface of the endless backing substrate by applying of a first binder precursor to the fibrous reinforcing material such that the first binder precursor bonds the fibrous reinforcing material to the endless backing substrate to form a reinforcing fiber layer; further solidifying the first binder precursor; and forming an abrasive coating on the surface of one of the fiber reinforcing layer, or alternatively, the exposed surface of the backing substrate.Type: GrantFiled: November 21, 1996Date of Patent: November 3, 1998Assignee: Minnesota Mining & Manufacturing CompanyInventors: Todd J. Christianson, Harold W. Benedict
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Patent number: 5681612Abstract: Methods for preparing abrasive articles and novel methods of making abrasive articles are presented. One method includes inserting a fibrous material adjacent an interior surface of a drum. A composition comprising an organic binder precursor material is then placed in the drum, and the drum is rotated such that centrifugal forces distribute the composition, including the organic binder precursor material, uniformly about the fibrous material. The composition is exposed to conditions sufficient to solidify the organic binder precursor material such that an endless, flexible, seamless substrate is formed having an outer surface formed adjacent the interior surface of the drum, an inner surface opposite the outer surface and the fibrous material embedded therein. Coated abrasives formed by this method, as well as other methods, are provided wherein an effective amount of a fibrous reinforcing material is engulfed within an organic polymeric binder material.Type: GrantFiled: February 20, 1996Date of Patent: October 28, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Harold W. Benedict, Michael J. Schneider, Donna W. Bange, Gary L. Heacox, Timothy J. Trudeau, Subramanian Krishnan
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Patent number: 5609706Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.Type: GrantFiled: May 8, 1995Date of Patent: March 11, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Harold W. Benedict, Diana D. Zimny, Donna W. Bange
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Patent number: 5584897Abstract: A method of making a coated abrasive article, and the product thereof, involving the steps of: providing a backing sheet having two free sheet ends and joining the two free sheet ends together as a splice to form an endless backing sheet; temporarily supporting the backing sheet before or after performing the splicing; applying fibrous reinforcing material onto a major surface of the endless backing sheet such as by winding at least one continuous fibrous strand or narrow fibrous strip in a plurality of revolutions around the endless backing sheet with applying of a first binder precursor to the fibrous reinforcing material such that the first binder precursor bonds the fibrous reinforcing material to the second major surface of the endless backing to form a reinforcing fiber layer; exposing the first binder precursor to conditions effective to solidify the first binder precursor; and forming an abrasive coating on the surface of one of the fiber reinforcing layer, or alternatively, the exposed surface of theType: GrantFiled: December 29, 1995Date of Patent: December 17, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Todd J. Christianson, Harold W. Benedict
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Patent number: 5578096Abstract: A method of making a coated abrasive article and the product thereof, involving the steps of: providing an endless spliceless backing loop substrate; applying fibrous reinforcing material onto a major surface of the endless backing substrate by applying of a first binder precursor to the fibrous reinforcing material such that the first binder precursor bonds the fibrous reinforcing material to the endless backing substrate to form a reinforcing fiber layer; further solidifying the first binder precursor; and forming an abrasive coating on the surface of one of the fiber reinforcing layer, or alternatively, the exposed surface of the backing substrate.Type: GrantFiled: August 10, 1995Date of Patent: November 26, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Todd J. Christianson, Harold W. Benedict
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Patent number: 5573619Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.Type: GrantFiled: October 29, 1993Date of Patent: November 12, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Harold W. Benedict, Diana D. Zimny, Donna W. Bange