Patents by Inventor Roger W. Lehrkamp

Roger W. Lehrkamp 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: 8720090
    Abstract: This disclosure is concerned with a readily changeable sign display system which facilitates easy alteration of the sign indicia displayed but is also resistant to unauthorized tampering so that it can be deployed where it is not under continuous surveillance when exposed to the general public. It comprises vertical frame members which provide tracks for the insertion of horizontal frame members. In some embodiments the vertical frame members are joined to each other with a backing member while in other embodiments intermediate channel members are placed between the vertical frame members and adjacent members are joined by a backing member. The horizontal frame members carry grooves for the insertion of sign panels which carry indicia. The tracks for the horizontal frame members carry removable obstructions which hold these members in the tracks. The obstructions at the upper end of the tracks are readily removable.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: May 13, 2014
    Assignee: InPro Corporation
    Inventor: Roger W. Lehrkamp
  • Publication number: 20140109448
    Abstract: This disclosure is concerned with a readily changeable sign display system which facilitates easy alteration of the sign indicia displayed but is also resistant to unauthorized tampering so that it can be deployed where it is not under continuous surveillance when exposed to the general public. It comprises vertical frame members which provide tracks for the insertion of horizontal frame members. In some embodiments the vertical frame members are joined to each other with a backing member while in other embodiments intermediate channel members are placed between the vertical frame members and adjacent members are joined by a backing member. The horizontal frame members carry grooves for the insertion of sign panels which carry indicia. The tracks for the horizontal frame members carry removable obstructions which hold these members in the tracks. The obstructions at the upper end of the tracks are readily removable.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: INPRO CORPORATION
    Inventor: Roger W. Lehrkamp
  • Patent number: 8533911
    Abstract: The present disclosure is concerned with an improved latching mechanism for the hinged section of a ceiling track for traveling curtain. The latching mechanism is designed to make a readily audible sound when it is locked. It is based upon a generally oval shaped lock knob which passes through a generally oval shaped aperture in the bottom wall of a receiver for the lock knob. The aperture is designed so that when the lock knob is rotated its long axis no longer aligns with the long axis of the aperture it can no longer pass through the aperture. The bottom wall of the receiver carries two upwardly extending side walls that must be pushed outward to allow the passage of the lock knob as it rotates and that carry gaps that accommodate the tips of the lock knob and allow the side walls to move back toward their undeformed position.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: September 17, 2013
    Assignee: InPro Corporation
    Inventor: Roger W. Lehrkamp
  • Patent number: 8533910
    Abstract: The present application discloses means for vertically mounting curtains for easy traverse utilizing an easily mountable bendable track for providing an adjustable path for traverse and flexible carriers which are readily affixable to the bendable track at any point in its length and traverse the bendable track under the load of a supported curtain with a minimum of noise. It discloses a bendable track with both a top and a bottom rib, each of which has a horizontal ledge and a curved profile extending from each ledge away from the main body of the rail and a roller free carrier which can be elastically expanded to snap over the lower horizontal ledge of the track. It further discloses that the surface of the horizontal ledge as well as the ends of the carrier are made of materials having a low coefficient of sliding friction such as exhibited by ABS, nylon, PVC and polyacetal and that the ends of the carrier have a surface with an arcuate surface which is adapted to ride on the lower horizontal ledge.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: September 17, 2013
    Assignee: In Pro Corporation
    Inventors: Matthew G. Bennett, Roger W. Lehrkamp
  • Publication number: 20130152344
    Abstract: The present disclosure is concerned with an improved latching mechanism for the hinged section of a ceiling track for traveling curtains. The latching mechanism is designed to make a readily audible sound when it is locked. It is based upon a generally oval shaped lock knob which passes through a generally oval shaped aperture in the bottom wall of a receiver for the lock knob. The aperture is designed so that when the lock knob is rotated its long axis no longer aligns with the long axis of the aperture it can no longer pass through the aperture. The bottom wall of the receiver carries two upwardly extending side walls that must be pushed outward to allow the passage of the lock knob as it rotates and that carry gaps that accommodate the tips of the lock knob and allow the side walls to move back toward their undeformed position.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 20, 2013
    Applicant: INPRO CORPORATION
    Inventor: Roger W. Lehrkamp
  • Publication number: 20120246872
    Abstract: The present application discloses means for vertically mounting curtains for easy traverse utilizing an easily mountable bendable track for providing an adjustable path for traverse and flexible carriers which are readily affixable to the bendable track at any point in its length and traverse the bendable track under the load of a supported curtain with a minimum of noise. It discloses a bendable track with both a top and a bottom rib, each of which has a horizontal ledge and a curved profile extending from each ledge away from the main body of the rail and a roller free carrier which can be elastically expanded to snap over the lower horizontal ledge of the track. It further discloses that the surface of the horizontal ledge as well as the ends of the carrier are made of materials having a low coefficient of sliding friction such as exhibited by ABS, nylon, PVC and polyacetal and that the ends of the carrier have a surface with an arcuate surface which is adapted to ride on the lower horizontal ledge.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 4, 2012
    Applicant: INPRO CORPORATION
    Inventors: Matthew G. Bennett, Roger W. Lehrkamp
  • Patent number: D447579
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: September 4, 2001
    Assignee: InPro Corporation
    Inventor: Roger W. Lehrkamp
  • Patent number: D661533
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: June 12, 2012
    Assignee: InPro Corporation
    Inventors: Matthew G. Bennett, Roger W. Lehrkamp