Patents Assigned to LAWRENCE ROLL UP DOORS, INC.
  • Internally reinforced rolling door slat
    Patent number: 9746289
    Abstract: A rolling door slat designed to deflect, redirect or absorb severe force is disclosed. The present invention utilizes a double slat design with layered joints, and an open volume enclosing a reinforced core. The reinforced core of the present invention consists of either a solid block of dense, protective material, or layers of material. The layers of material serve to both deflect and absorb impact and blast force, resist vertical force, as well as provide more traditional rolling door functions such as fire resistance or sound and heat insulation.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: August 29, 2017
    Assignee: LAWRENCE ROLL UP DOORS, INC.
    Inventors: Steven Hahn, Paul Freberg, Paul Lawrence
  • Barrier opening system for emergency escape and rescue
    Patent number: 9689203
    Abstract: A barrier opening system for emergency escape and rescue comprises a vertical acting barrier device, an escape device, and a rescue device, the vertical acting barrier device winds a barrier via a winding shaft; a prestressed spring preloaded on the winding shaft for storing a restoring force when the barrier is unwound by the winding shaft; a brake mechanism for stopping the winding shaft from rotating; a brake release mechanism for releasing the winding shaft under an abnormal condition; an escape device comprising an identification unit and a master key for activating the brake release mechanism; the identification unit identifies a rescue personnel's identity before allowing the personnel to use the master key to activate the brake release mechanism; when the emergency button and/or the master key activate(s) the brake release mechanism to release the winding shaft, the barrier can be lifted up by the restoring force.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 27, 2017
    Assignee: Lawrence Roll-Up Doors, Inc.
    Inventors: Paul Freberg, Paul Lawrence, Steve Hahn
  • INTERNALLY REINFORCED ROLLING DOOR SLAT
    Publication number: 20160230444
    Abstract: A rolling door slat designed to deflect, redirect or absorb severe force is disclosed. The present invention utilizes a double slat design with layered joints, and an open volume enclosing a reinforced core. The reinforced core of the present invention consists of either a solid block of dense, protective material, or layers of material. The layers of material serve to both deflect and absorb impact and blast force, resist vertical force, as well as provide more traditional rolling door functions such as fire resistance or sound and heat insulation.
    Type: Application
    Filed: February 5, 2015
    Publication date: August 11, 2016
    Applicant: LAWRENCE ROLL UP DOORS, INC.
    Inventors: Steven Hahn, Paul Freberg, Paul Lawrence