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).

  • Patent number: 8480838
    Abstract: 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: Grant
    Filed: September 13, 2012
    Date of Patent: July 9, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
  • Publication number: 20130008595
    Abstract: 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: Application
    Filed: September 13, 2012
    Publication date: January 10, 2013
    Inventors: Scott A. Ripley, Donald Ivan Hirsch, William Frederic Bader
  • Patent number: 8309218
    Abstract: 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: Grant
    Filed: August 27, 2008
    Date of Patent: November 13, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
  • Publication number: 20080311403
    Abstract: 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: Application
    Filed: August 27, 2008
    Publication date: December 18, 2008
    Inventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
  • Patent number: 7432009
    Abstract: 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: Grant
    Filed: April 3, 2002
    Date of Patent: October 7, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader
  • Patent number: 7022207
    Abstract: 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: Grant
    Filed: October 6, 2004
    Date of Patent: April 4, 2006
    Assignee: 3M Innovative Properties Company
    Inventor: Donald Ivan Hirsch
  • Patent number: 6868890
    Abstract: 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: Grant
    Filed: April 3, 2002
    Date of Patent: March 22, 2005
    Assignee: 3M Innovative Properties Company
    Inventor: Donald Ivan Hirsch
  • Publication number: 20030188824
    Abstract: 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: Application
    Filed: April 3, 2002
    Publication date: October 9, 2003
    Applicant: 3M Innovative Properties Company
    Inventor: Donald Ivan Hirsch
  • Publication number: 20030191021
    Abstract: 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: Application
    Filed: April 3, 2002
    Publication date: October 9, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Scott Alan Ripley, Donald Ivan Hirsch, William Frederic Bader