Patents by Inventor Donald Ivan Hirsch
Donald Ivan Hirsch 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: 8480838Abstract: Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies. A method and apparatus for performing the method are provided comprising die-cutting webs of catalyst decal materials or electrode materials to make first and second workpieces at first and second rotary die stations; holding the die-cut workpieces by action of sub-ambient air pressure to an endless perforated belt of first and second vacuum conveyors, typically before they are fully cut from the first and second webs; transporting first and second workpieces to opposing sides of a membrane in a laminating station; concurrently feeding the first and second workpieces into the laminating nip adjacent to the membrane, and laminating the first and second workpieces to the membrane.Type: GrantFiled: September 13, 2012Date of Patent: July 9, 2013Assignee: 3M Innovative Properties CompanyInventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
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Publication number: 20130008595Abstract: Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies. A method and apparatus for performing the method are provided comprising die-cutting webs of catalyst decal materials or electrode materials to make first and second workpieces at first and second rotary die stations; holding the die-cut workpieces by action of sub-ambient air pressure to an endless perforated belt of first and second vacuum conveyors, typically before they are fully cut from the first and second webs; transporting first and second workpieces to opposing sides of a membrane in a laminating station; concurrently feeding the first and second workpieces into the laminating nip adjacent to the membrane, and laminating the first and second workpieces to the membrane.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Inventors: Scott A. Ripley, Donald Ivan Hirsch, William Frederic Bader
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Patent number: 8309218Abstract: Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies. A method and apparatus for performing the method are provided comprising die-cutting webs of catalyst decal materials or electrode materials to make first and second workpieces at first and second rotary die stations; holding the die-cut workpieces by action of sub-ambient air pressure to an endless perforated belt of first and second vacuum conveyors, typically before they are fully cut from the first and second webs; transporting first and second workpieces to opposing sides of a membrane in a laminating station; concurrently feeding the first and second workpieces into the laminating nip adjacent to the membrane, and laminating the first and second workpieces to the membrane.Type: GrantFiled: August 27, 2008Date of Patent: November 13, 2012Assignee: 3M Innovative Properties CompanyInventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
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Publication number: 20080311403Abstract: Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies. A method and apparatus for performing the method are provided comprising die-cutting webs of catalyst decal materials or electrode materials to make first and second workpieces at first and second rotary die stations; holding the die-cut workpieces by action of sub-ambient air pressure to an endless perforated belt of first and second vacuum conveyors, typically before they are fully cut from the first and second webs; transporting first and second workpieces to opposing sides of a membrane in a laminating station; concurrently feeding the first and second workpieces into the laminating nip adjacent to the membrane, and laminating the first and second workpieces to the membrane.Type: ApplicationFiled: August 27, 2008Publication date: December 18, 2008Inventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
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Patent number: 7432009Abstract: Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies.Type: GrantFiled: April 3, 2002Date of Patent: October 7, 2008Assignee: 3M Innovative Properties CompanyInventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
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Patent number: 7022207Abstract: A method and apparatus are provided for peeling a thin film, typically 100 microns or less in thickness, from a liner by use of a rotatable peel rod supported in an air bearing. The air bearing comprises a support plate having arcuate surfaces which are substantially coaxial with a cylindrical film-bearing segment of the peel rod. Air openings in the arcuate surfaces conduct a flow of air into an air bearing gap between the arcuate surfaces and the peel rod.Type: GrantFiled: October 6, 2004Date of Patent: April 4, 2006Assignee: 3M Innovative Properties CompanyInventor: Donald Ivan Hirsch
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Patent number: 6868890Abstract: A method and apparatus are provided for peeling a thin film, typically 100 microns or less in thickness, from a liner by use of a rotatable peel rod supported in an air bearing. The air bearing comprises a support plate having arcuate surfaces which are substantially coaxial with a cylindrical film-bearing segment of the peel rod. Air openings in the arcuate surfaces conduct a flow of air into an air bearing gap between the arcuate surfaces and the peel rod.Type: GrantFiled: April 3, 2002Date of Patent: March 22, 2005Assignee: 3M Innovative Properties CompanyInventor: Donald Ivan Hirsch
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Publication number: 20030188824Abstract: A method and apparatus are provided for peeling a thin film, typically 100 microns or less in thickness, from a liner by use of a rotatable peel rod supported in an air bearing. The air bearing comprises a support plate having arcuate surfaces which are substantially coaxial with a cylindrical film-bearing segment of the peel rod. Air openings in the arcuate surfaces conduct a flow of air into an air bearing gap between the arcuate surfaces and the peel rod.Type: ApplicationFiled: April 3, 2002Publication date: October 9, 2003Applicant: 3M Innovative Properties CompanyInventor: Donald Ivan Hirsch
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Publication number: 20030191021Abstract: Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies.Type: ApplicationFiled: April 3, 2002Publication date: October 9, 2003Applicant: 3M Innovative Properties CompanyInventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader