Patents by Inventor Craig L. Lucas

Craig L. Lucas 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: 6298520
    Abstract: A door closer and mounting bracket for attaching the door closer to either the door or the door frame. The door closer includes two pins at one end for engaging corresponding holes on the mounting bracket and the mounting bracket includes a resilient clip for engaging the body of the door closer.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: October 9, 2001
    Assignee: Schlage Lock Company
    Inventors: Robert J. Blickhahn, Scott C. Perry, James E. Jensen, Andy Current, Craig L. Lucas
  • Patent number: 5535514
    Abstract: A method for making a hydraulic door closer includes the steps of molding material to form an elongated single-piece housing having a longitudinal cylindrical bore extending from a first open end thereof to a closed second end, a transverse intersecting bore, and mounting feet; installing a spring within the cylindrical bore at the closed end of the housing; installing a piston within the cylindrical bore in contact with the spring, the piston having a toothed rack thereon and an opening in each end to permit passage of fluid therethrough; installing a pinion gear in the transverse intersecting bore in meshed engagement with the toothed rack; installing an endplug with a port in the first end of the longitudinal cylindrical bore; and inserting a valve device through the port, for controlling flow of fluid through the piston, and for thereby controlling closing speed of the door. The single-piece housing as well as other components may be molded from metal or polymeric materials.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: July 16, 1996
    Assignee: Schlage Lock Company
    Inventor: Craig L. Lucas
  • Patent number: 5502874
    Abstract: A valve for regulating speed of operation of a door closer, includes an elongated hollow tubular body having a closed first end with driving provisions thereon, an open second end, and an orifice in its sidewall adjacent its closed first end; an endplug for a cylinder bore of the door closer, the endplug having an axial port in which the closed first end of the tubular body is rotatably supported and which provides a fluid tight seal about the outer surface of the tubular body; an annular valve seat adjacent the endplug, the seat being fixed against rotation, and having an open portion and a closed portion which provide varying degrees of occlusion of the orifice when the tubular body is rotated; and a seal plate check valve captured against a piston head and occluding an opening therein during closing, the plate also providing a seal about the outer surface of the tubular body near the open second end thereof.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: April 2, 1996
    Assignee: Schlage Lock Company
    Inventor: Craig L. Lucas
  • Patent number: 5220708
    Abstract: A self-trimming shield for the gap between a hinged door heel and its casing, includes a unitary strip of length approximately equal to the height of the door and made up of a sequentially arrayed plurality of elongated parallel panels. Opposite end panels of the plurality are attached, respectively, to the door and casing on the side opposite the hinge, while inner panels of said plurality are articulably connected with the end panels and with each other in such manner that, when the door is closed, the panels automatically fold to lie in close proximity to the door so that the shield appears to be an integral part of the door trim.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: June 22, 1993
    Assignee: Schlage Lock Company
    Inventors: Craig L. Lucas, Rex H. Lasson