Patents by Inventor David C. Roeker
David C. Roeker 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: 5915436Abstract: A molded brush having a backing with a plurality of bristles extending therefrom. The backing and bristles are preferably integrally molded. The brush is molded from a moldable polymer such a thermoset polymer, thermoplastic polymer, or thermoplastic elastomer. The molded brush can include an attaching means molded integrally with the backing. Also disclosed is a method of making a molded brush and a method of refining a workpiece surface with a molded brush.Type: GrantFiled: October 30, 1996Date of Patent: June 29, 1999Assignee: Minnesota Mining and Manufacting CompanyInventors: David E. Johnson, Lawrence J. Mann, Scott M. Mevissen, Richard M. Pihl, David C. Roeker
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Patent number: 5903951Abstract: A molded brush segment having a plurality of integrally molded bristles extending from a generally planar center portion. The brush segment is molded from a moldable polymer such a thermoset polymer, thermoplastic polymer, or thermoplastic elastomer. The moldable polymer preferably includes a plurality of organic or inorganic abrasive particles interspersed throughout at least the bristles, and can be interspersed throughout the brush segment. The molded brush segments can be generally circular, with the bristles extending radially outward in the plane defined by the central portion. A plurality of brush segments can be combined to form a brush assembly. Also disclosed is a method of making a molded abrasive brush and a method of refining a workpiece surface with a molded abrasive brush.Type: GrantFiled: October 30, 1996Date of Patent: May 18, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard Ionta, Donna W. Bange, David E. Johnson, Mara E. Liepa, Richard M. Pihl, David C. Roeker
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Patent number: 5807161Abstract: A back-up pa supporting and releasably engaging an abrasive article. The back-up pad comprises: a body including a front surface and a back surface in which the front surface comprises a first attachment component thereon and the back surface comprises a second attachment component thereon, and each of the attachment components is adapted for releasable engagement with an abrasive article; a reinforcing plate located within the body between the front surface and the back surface; and tool securing means on the body for securing the back-up pad to a power tool and for selectively orienting the back-up pad in one of a first orientation and a second orientation. When the back-up pad is in the first orientation, substantially the entire front surface is exposed for contacting a workpiece, and when the back-up pad is in the second orientation, substantially the entire back surface is exposed for contacting a workpiece.Type: GrantFiled: March 15, 1996Date of Patent: September 15, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Edward L. Manor, David C. Roeker
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Patent number: 5679067Abstract: A molded abrasive brush having a backing with a plurality of bristles extending therefrom. The backing and bristles are preferably integrally molded. The brush is molded from a moldable polymer such a thermoset polymer, thermoplastic polymer, or thermoplastic elastomer. The moldable polymer includes a plurality of organic or inorganic abrasive particles interspersed throughout at least the bristles, and can be interspersed throughout the brush. The moldable brush can include an attaching means molded integrally with the backing. Also disclosed is a method of making a molded abrasive brush and a method of refining a workpiece surface with a molded abrasive brush.Type: GrantFiled: April 28, 1995Date of Patent: October 21, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: David E. Johnson, Lawrence J. Mann, Scott M. Mevissen, Richard M. Pihl, David C. Roeker
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Patent number: 5640772Abstract: A cutting tool adapted to be reciprocated by a manually manipulated air hammer or similar device while being used to separate laminated materials. The cutting tool comprises a blade of thin resiliently flexible metal having a sharpened edge and an opposite driven edge, and an adapter comprising a blade holder portion which may include polymeric material permanently molded around a portion of the blade adjacent its driven edge, and a shank portion shaped for engagement by the air hammer attached to the blade holder that has an end shaped for engagement by the air hammer or similar device. The majority of or all of the adapter can be formed of the polymeric material to provide a low mass for the cutting tool and an average specific gravity for the adapter that is significantly less than the specific gravity of metal.Type: GrantFiled: April 17, 1995Date of Patent: June 24, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: David C. Roeker, Edward L. Manor, Shawn P. Crosby
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Patent number: 5469623Abstract: A cutting tool adapted to be reciprocated by a manually manipulated air hammer or similar device while being used to separate laminated materials. The cutting tool comprises a blade of thin resiliently flexible metal having a sharpened edge and an opposite driven edge, and an adapter comprising a blade holder portion which may include polymeric material permanently molded around a portion of the blade adjacent its driven edge, and a shank portion shaped for engagement by the air hammer attached to the blade holder that has an end shaped for engagement by the air hammer or similar device. The majority of or all of the adapter can be formed of the polymeric material to provide a low mass for the cutting tool and an average specific gravity for the adapter that is significantly less than the specific gravity of metal.Type: GrantFiled: April 29, 1994Date of Patent: November 28, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: David C. Roeker, Edward L. Manor, Shawn P. Crosby
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Patent number: 5400460Abstract: An adhesive article for use in a microwave oven is provided having a hot-melt or heat-curable adhesive substrate, and a susceptor layer of electrically conductive or semi-conductive microwave absorbing material that is disposed on at least a portion of the substrate. The article becomes less absorbent of microwave radiation upon the melting or deformation of the substrate. This article is suitable for adhering one adherend to another by exposing said article containing a hot-melt adhesive substrate to microwave energy.Type: GrantFiled: February 1, 1994Date of Patent: March 28, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: David C. Roeker, David F. Slama, William F. Sheffield
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Patent number: 5340649Abstract: An adhesive article for use in a microwave oven is provided having a hot-melt or heat-curable adhesive substrate, and a susceptor layer of electrically conductive or semi-conductive microwave absorbing material that is disposed on at least a portion of the substrate. The article becomes less absorbent of microwave radiation upon the melting or deformation of the substrate. This article is suitable for adhering one adherend to another by exposing said article containing a hot-melt adhesive substrate to microwave energy.Type: GrantFiled: July 2, 1992Date of Patent: August 23, 1994Assignee: Minnesota Mining and ManufacturingInventors: David C. Roeker, David F. Slama, William F. Sheffield
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Patent number: 5001804Abstract: A buff adapted for self centering engagement with a backup pad comprising a circular body with a first fastener portion on its face surface. The buff includes a stiff flexible backing having a generally planar circular central portion and an annular flange only slightly larger than the diameter of the backup pad projecting from one side surface of its central portion, a second fastener portion fixed on the side surface of its central portion and adapted for engagement with the fastener portion on the backup pad, and a multiplicity of projecting tufts having central portions adhered in the backing by a thermoplastic adhesive that melts and adheres at a temperature under 100.degree. C.Type: GrantFiled: November 13, 1989Date of Patent: March 26, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: David C. Roeker, Ronald L. Ott
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Patent number: 4907313Abstract: A buff adapted for self centering engagement with a backup pad comprising a circular body with a first fastener portion on its face surface. The buff includes a stiff flexible backing having a generally planar circular central portion and an annular flange only slightly larger than the diameter of the backup pad projecting from one side surface of its central portion, a second fastener portion fixed on the side surface of its central portion and adapted for engagement with the fastener portion on the backup pad, and a multiplicity of projecting tufts having central portions adhered in the backing by a thermoplastic adhesive that melts and adheres at a temperature under 100.degree. C.Type: GrantFiled: November 29, 1988Date of Patent: March 13, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: David C. Roeker, Ronald L. Ott
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Patent number: 4844967Abstract: A coated abrasive back up pad is disclosed that may be attached to different types of drive motor assemblies by a simple rearrangement of an adapter included in the back up pad. The back up pad may have passageways with offset portions in a foam layer of the pad positioned to communicate between openings in an abrasive disk attached to the back up pad and vacuum systems in various drive motor assemblies to which it may be attached. A novel method is disclosed for molding the back up pad to form such passageways which includes molding dies into the pad that can later be removed by compressing the foam layer so that the dies cut outlet openings through which they are then removed.Type: GrantFiled: October 14, 1988Date of Patent: July 4, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Edwin A. Goralski, David C. Roeker
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Patent number: 4569431Abstract: A dual hand control actuation mechanism for a manually actuated device has a pair of opposed actuating rods that have wedge shaped ends defining forward and rearward camming surfaces to interact with forward and rearward cam surfaces on a cam member positioned between the actuating rods. If both of the actuating rods are pushed simultaneously, their forward cam surfaces engage the rearward cam surfaces of the cam member and move the cam member to cause it to engage a switch to actuate the device. If one of the actuating rods is pushed before the other, its forward camming surface engages the rearward camming surface on the cam member and pivots the cam member preventing the other actuating member from engaging the cam member in a manner that will move the cam member against the switch, thereby preventing actuation of the device.Type: GrantFiled: May 17, 1984Date of Patent: February 11, 1986Assignee: Terryl K. QualeyInventor: David C. Roeker
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Patent number: 4429455Abstract: A machine for application of two-part electrical connectors to multiconductor flat cables has connector magazines for feeding connector bodies and covers to a pre-application station seriatim, and a connector pusher bar for moving a body and a cover from a pre-application station to an application station, one connector part above and one below a flat cable path through the application station. The upper connector part is supported and guided between a pair of plates, one of which has its lower edge inclined toward the opposing plate to provide support for the connector part between the plates, and the plates are resiliently movable apart to permit a platen to push the upper connector part past the inclined support edge and to press it into engagement with the flat cable and the other connector part to complete the application.Type: GrantFiled: February 3, 1982Date of Patent: February 7, 1984Assignee: Minnesota Mining and Manufacturing CompanyInventor: David C. Roeker
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Patent number: D381139Type: GrantFiled: April 28, 1995Date of Patent: July 15, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: David E. Johnson, Richard M. Pihl, David C. Roeker
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Patent number: D394530Type: GrantFiled: March 28, 1997Date of Patent: May 19, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: David C. Roeker
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Patent number: D399620Type: GrantFiled: March 28, 1997Date of Patent: October 13, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: David C. Roeker