Patents by Inventor Chris Wierzbowski

Chris Wierzbowski 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: 8959860
    Abstract: A bendable cover assembly for an expansion joint gap in a tread and riser application includes an elongated resilient cover for bridging a gap between underlying structural members. A plurality of spaced-apart rigid plate members are encapsulated within, or otherwise are engaged with, the elongated cover of the cover assembly. Additional bendable plate members may be positioned on opposite lateral sides of the plurality of spaced-apart rigid plate members. The cover has a thickness and sufficient elasticity to elastically deform for establishing supporting contact between the marginal support areas of the cover and the underlying structural members. Fasteners may be engaged with the cover at spaced apart sites along at least one lateral side portion thereof for elastically anchoring the elongated resilient cover to at least one of the underlying structural members.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: February 24, 2015
    Assignee: Construction Research & Technology GmbH
    Inventor: Chris Wierzbowski
  • Patent number: 8893448
    Abstract: An expansion joint system for bridging an expansion joint gap between two spaced-apart underlying stair structures. The expansion joint system includes a movable plate that is connected to a fixed plate through a hinge. The hinge connection permits the movable plate to move in response to thermal movements and seismic events that causes the width of the expansion joint to open to a greater width or close to a smaller width. Following the seismic or thermal event, the hinge connection automatically returns the movable plate to its original position.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: November 25, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: Chris Wierzbowski, Gary Moore
  • Patent number: 8887463
    Abstract: A cover assembly for bridging an opening located in an expansion joint between two spaced-apart structural members. The cover assembly includes a coverplate having a rigid plate member that is engaged with a resilient elastomeric cover. The cover assembly is affixed to the underlying structural members by base members. The proper positioning of the cover assembly within the expansion joint gap is maintained through a positioning assembly that is engaged with the coverplate and base members.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: November 18, 2014
    Assignee: Construction Research & Technology GmbH
    Inventors: James Derrigan, Chris Wierzbowski
  • Publication number: 20120180417
    Abstract: A bendable cover assembly for an expansion joint gap in a tread and riser application includes an elongated resilient cover for bridging a gap between underlying structural members. A plurality of spaced-apart rigid plate members are encapsulated within, or otherwise are engaged with, the elongated cover of the cover assembly. Additional bendable plate members may be positioned on opposite lateral sides of the plurality of spaced-apart rigid plate members. The cover has a thickness and sufficient elasticity to elastically deform for establishing supporting contact between the marginal support areas of the cover and the underlying structural members. Fasteners may be engaged with the cover at spaced apart sites along at least one lateral side portion thereof for elastically anchoring the elongated resilient cover to at least one of the underlying structural members.
    Type: Application
    Filed: January 10, 2012
    Publication date: July 19, 2012
    Inventor: Chris WIERZBOWSKI
  • Publication number: 20120047832
    Abstract: An expansion joint system for bridging an expansion joint gap between two spaced-apart underlying stair structures. The expansion joint system includes a movable plate that is connected to a fixed plate through a hinge. The hinge connection permits the movable plate to move in response to thermal movements and seismic events that causes the width of the expansion joint to open to a greater width or close to a smaller width. Following the seismic or thermal event, the hinge connection automatically returns the movable plate to its original position.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 1, 2012
    Inventors: Chris WIERZBOWSKI, Gary MOORE
  • Publication number: 20080127590
    Abstract: A cover assembly for bridging an opening located in an expansion joint between two spaced-apart structural members. The cover assembly includes a coverplate having a rigid plate member that is engaged with a resilient elastomeric cover. The cover assembly is affixed to the underlying structural members by base members. The proper positioning of the cover assembly within the expansion joint gap is maintained through a positioning assembly that is engaged with the coverplate and base members.
    Type: Application
    Filed: November 21, 2007
    Publication date: June 5, 2008
    Inventors: James Derrigan, Chris Wierzbowski