Patents by Inventor Duane M. Sulak
Duane M. Sulak 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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Publication number: 20140259759Abstract: An insole advantageous for arthritic or diabetic patients comprises three layers and provides an arch support and an integral heel receiving area. The insole has a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface. The bottom layer's bottom surface preferably comprises one to three indentations formed integrally therein and is preferably made of an EVA foam. Insert layers are secured to each of said indentations. A middle layer having a first and second side is secured to the bottom layer's top surface adjacent the middle layer's second side and is preferably made of a synthetic rubber layer. The middle layer takes the shape of the bottom layer. A top layer is coextensive with and secured to the middle layer's first side. The top layer composition is selected according to the intended use.Type: ApplicationFiled: March 18, 2013Publication date: September 18, 2014Applicant: Spenco Medical CorporationInventors: Duane M. Sulak, David B. Granger, Jacob Martinez
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Publication number: 20140230274Abstract: A triple density replacement insole which has at least two coextensive layers of different densities which are adjacent one another and extending the length of the insole comprising a first top cloth layer and a second gel layer and a third density layer comprising a stability cradle adjacent the gel layer. In a preferred embodiment, the stability cradle, which extends from the arch area to the heel area and secures to the gel layer, defines a first metatarsal region gap which exposes the gel layer and a second heel region gap which exposes the gel layer. A heel cushion is positioned in the second heel region gap adjacent to the gel layer and is secured to the gel layer exposed in that region. A metatarsal arch support is integrally formed in the first metatarsal region gap area.Type: ApplicationFiled: April 30, 2014Publication date: August 21, 2014Applicant: Spenco Medical CorporationInventors: Melvyn P. Cheskin, David Bradley Granger, Jacob Martinez, Duane M. Sulak
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Patent number: 8745894Abstract: A triple density replacement insole which has at least two coextensive layers of different densities which are adjacent one another and extending the length of the insole comprising a first top cloth layer and a second gel layer and a third density layer comprising a stability cradle adjacent the gel layer. In a preferred embodiment, the stability cradle, which extends from the arch area to the heel area and secures to the gel layer, defines a first metatarsal region gap which exposes the gel layer and a second heel region gap which exposes the gel layer. A heel cushion is positioned in the second heel region gap adjacent to the gel layer and is secured to the gel layer exposed in that region. A metatarsal arch support is integrally formed in the first metatarsal region gap area.Type: GrantFiled: September 11, 2008Date of Patent: June 10, 2014Assignee: Spenco Medical CorporationInventors: Melvyn P. Cheskin, David Bradley Granger, Jacob Martinez, Duane M. Sulak
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Patent number: 8424222Abstract: An insole especially advantageous for arthritic or diabetic patients comprises three layers and is shaped in a form which provides and arch support and an integral heel receiving area. It is made from a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface. The bottom surface of the bottom layer preferably further comprises one to three indentations formed integrally therein. Insert layers are secured to each of said indentations. Preferably, the bottom layer is made from an EVA foam. A middle layer having a first and second side is secured to the top surface of the bottom layer adjacent the middle layer's second side. The middle layer is preferably made of a synthetic rubber layer. The middle layer takes the shape of the bottom layer. A top layer is coextensive with and secured to the first side of the synthetic rubber layer. The top layer composition is selected according to the intended use.Type: GrantFiled: November 21, 2008Date of Patent: April 23, 2013Assignee: Spenco Medical CorporationInventors: Duane M. Sulak, David B. Granger, Jacob Martinez
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Patent number: 8296969Abstract: A triple density heel cup is disclosed which comprises a generally heel-shaped substrate having a length extending from a heel portion of an integral wall to a front border, which front border in use is adapted to underlie a portion of the arch area of a human foot. The heel-shaped substrate comprises a structural gel layer having a foot receiving surface and a shoe side surface. A generally flat portion of the foot receiving surface will lie adjacent the bottom of a wearer's foot in use and the integral wall which is adapted to lie adjacent the back of wearer's heel and portion of the side of a wearer's heel in use, said integral wall having an apex of maximum height, said wall tapering down in height from said apex toward said front border; The shoe side surface defines a channel formed in said structural gel adapted to receive a reinforcing component which is secured to said structural gel in said channel and is made of a denser material than said structural gel.Type: GrantFiled: January 12, 2009Date of Patent: October 30, 2012Assignee: Spenco Medical CorporationInventors: David Bradley Granger, Jacob Martinez, Duane M. Sulak
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Publication number: 20110219642Abstract: An insole especially advantageous for arthritic or diabetic patients comprises three layers and is shaped in a form which provides and arch support and an integral heel receiving area. It is made from a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface. The bottom surface of the bottom layer preferably further comprises one to three indentations formed integrally therein. Insert layers are secured to each of said indentations. Preferably, the bottom layer is made from an EVA foam. A middle layer having a first and second side is secured to the top surface of the bottom layer adjacent the middle layer's second side. The middle layer is preferably made of a synthetic rubber layer. The middle layer takes the shape of the bottom layer. A top layer is coextensive with and secured to the first side of the synthetic rubber layer. The top layer composition is selected according to the intended use.Type: ApplicationFiled: November 21, 2008Publication date: September 15, 2011Applicant: SPENCO MEDICAL CORPORATIONInventors: Duane M. Sulak, David B. Granger, Jacob Martinez
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Publication number: 20100212188Abstract: A triple density heel cup is disclosed which comprises a generally heel-shaped substrate having a length extending from a heel portion of an integral wall to a front border, which front border in use is adapted to underlie a portion of the arch area of a human foot. The heel-shaped substrate comprises a structural gel layer having a foot receiving surface and a shoe side surface. A generally flat portion of the foot receiving surface will lie adjacent the bottom of a wearer's foot in use and the integral wall which is adapted to lie adjacent the back of wearer's heel and portion of the side of a wearer's heel in use, said integral wall having an apex of maximum height, said wall tapering down in height from said apex toward said front border; The shoe side surface defines a channel formed in said structural gel adapted to receive a reinforcing component which is secured to said structural gel in said channel and is made of a denser material than said structural gel.Type: ApplicationFiled: January 12, 2009Publication date: August 26, 2010Applicant: Spenco Medical CorporationInventors: David Bradley Granger, Jacob Martinez, Duane M. Sulak
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Publication number: 20100205831Abstract: A triple density replacement insole which has at least two coextensive layers of different densities which are adjacent one another and extending the length of the insole comprising a first top cloth layer and a second gel layer and a third density layer comprising a stability cradle adjacent said gel layer is disclosed. In a preferred embodiment, the stability cradle, which extends from the arch area to the heel area and secures to the gel layer, defines a first metatarsal region gap which exposes the gel layer and a second heel region gap which exposes the gel layer, In the preferred embodiment, a heel cushion is positioned in the second heel region gap adjacent to said gel layer and is secured to said gel layer exposed in that region and a metatarsal arch support is integrally formed in the first metatarsal region gap area from the first top cloth and second gel layer.Type: ApplicationFiled: September 11, 2008Publication date: August 19, 2010Applicant: SPENCO MEDICAL CORPORATIONInventors: Melvyn P. Cheskin, David Bradley Granger, Jacob Martinez, Duane M. Sulak