Patents by Inventor Roger K. Crawford

Roger K. Crawford 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).

  • Publication number: 20040231258
    Abstract: A multi-positional foot is carried on the bottom of a cleanroom wall stud and is readily adjustable in a vertical direction(relative to the length of the stud) for contact with the upper surface of an access floor panel and for movement away from the panel to provide clearance for removing the panel(s) that lies beneath the foot. Moreover, the foot is constructed with rotatably joined members that are sized to swing into and out of engagement with a floor panel for respectively anchoring, the stud and permitting removal of that panel. The rotational mounting of the members that make up the foot, including a slotted toe member, permits great flexibility for using the foot to anchor wall studs to any of a wide variety of floor panel configurations.
    Type: Application
    Filed: June 24, 2004
    Publication date: November 25, 2004
    Inventors: Dennis Cates, Roger K Crawford, Richard Cunningham
  • Patent number: 6634149
    Abstract: Construction and remodeling of a cleanroom wall system is facilitated with a universal stud design. A variety of wall configurations may be assembled with the same stud. Also provided is a useful connector block for joining perpendicularly oriented studs, or for splicing together axially aligned studs. A corner stud is also provided, as well as a deflection track for connecting the top track of a wall panel to a conventional ceiling grid to allow deflection of the grid relative to the wall and to facilitate easy access to the portion of the ceiling immediately above the wall panel.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: October 21, 2003
    Inventors: Dennis O. Cates, Roger K. Crawford
  • Patent number: 6615556
    Abstract: The present invention provides a stud component of a cleanroom wall system that, in addition to supporting wall panels also supports a door, thereby doing away with the need for a separate, standard doorframe. Thus, the universal nature of the wall and door stud components substantially reduces the material and labor cost associated with acquiring and constructing doorframes in a cleanroom wall system.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: September 9, 2003
    Inventors: Dennis O. Cates, Roger K. Crawford
  • Publication number: 20030024179
    Abstract: The present invention provides a stud component of a cleanroom wall system that, in addition to supporting wall panels also supports a door, thereby doing away with the need for a separate, standard doorframe. Thus, the universal nature of the wall and door stud components substantially reduces the material and labor cost associated with acquiring and constructing doorframes in a cleanroom wall system.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Inventors: Dennis O. Cates, Roger K. Crawford
  • Publication number: 20010007186
    Abstract: Construction and remodeling of a cleanroom wall system is facilitated with a universal stud design. A variety of wall configurations may be assembled with the same stud. Also provided is a useful connector block for joining perpendicularly oriented studs, or for splicing together axially aligned studs. A corner stud is also provided, as well as a deflection track for connecting the top track of a wall panel to a conventional ceiling grid to allow deflection of the grid relative to the wall and to facilitate easy access to the portion of the ceiling immediately above the wall panel.
    Type: Application
    Filed: February 16, 2001
    Publication date: July 12, 2001
    Inventors: Dennis O. Cates, Roger K. Crawford
  • Patent number: 6209275
    Abstract: Construction and remodeling of a cleanroom wall system is facilitated with a universal stud design. A variety of wall configurations may be assembled with the same stud. Also provided is a useful connector block for joining perpendicularly oriented studs, or for splicing together axially aligned studs. A corner stud is also provided, as well as a deflection track for connecting the top track of a wall panel to a conventional ceiling grid to allow deflection of the grid relative to the wall and to facilitate easy access to the portion of the ceiling immediately above the wall panel.
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: April 3, 2001
    Assignee: Southland Industries
    Inventors: Dennis O. Cates, Roger K. Crawford