Patents by Inventor Carl J. Demrick

Carl J. Demrick 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).

  • Dual wheel caster body structure
    Patent number: 4283810
    Abstract: A dual wheel caster body construction wherein the caster body frame is fabricated from a pair of sheet metal stampings nested together at an integral swivel stem socket and secured together in the area of confronting plate portions with an axle bearing through the plate portions for an axle carrying supporting wheels on opposite sides of the plate portions and a wheel cover also fabricated from a sheet metal stamping supported on and secured to the body frame stampings.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: August 18, 1981
    Assignee: Herder N.V.
    Inventor: Carl J. Demrick
  • Socket for caster mounting
    Patent number: 4282629
    Abstract: This invention relates to a socket for mounting casters and which preferably is of integral construction, made from a flat blank and formed to provide an upstanding tubular socket of opposed semi-circular sections, tapered adjacent their upper portion and partially overlapping at the top end of the tube, with spurs projecting outwardly thereof intermediate the height of the tube and having a bottom flange including upstanding teeth having wedge shaped top edges.
    Type: Grant
    Filed: July 18, 1980
    Date of Patent: August 11, 1981
    Assignee: Herder N.V.
    Inventors: Carl J. Demrick, Frederick C. Greene
  • Bushing and grease retainer for casters
    Patent number: 4213226
    Abstract: This invention relates to a pivot bushing for casters and in which the stem for associating the caster with an article it is to support, is mounted. The bushing preferably is non-metallic and fits into the caster stem mount with a close fit for at least a portion of its depth with a clearance fit in the lower area where the stem must pass beyond an annular shoulder in the bushing for retention. The bushing has a fully closed lower end for retaining grease used to lubricate the stem for rotation in the bushing. The upper end of the bushing includes an integral cap-like enclosure, or shroud, which overlies the top end of the tube for mounting the bushing and stem in a caster and which lends a finished appearance in this area. A vertical exterior bead on one side of the bushing serves to engage a seam in the mounting tube to position the bushing properly relative to the caster.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: July 22, 1980
    Assignee: Herder, N.V.
    Inventor: Carl J. Demrick
  • Forming and coating apparatus
    Patent number: 4130933
    Abstract: The present invention relates to a new and improved apparatus for the high speed and continuous forming of parts requiring a protective plastic coating to be deposited over a portion of such parts.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: December 26, 1978
    Assignee: Arco Industries Corporation
    Inventor: Carl J. Demrick
  • Picture window fireplace screen
    Patent number: D281901
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: December 24, 1985
    Assignee: Shepherd Products Limited
    Inventors: Carl J. Demrick, Ronald D. Hussey
  • Picture window fireplace screen
    Patent number: D285336
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: August 26, 1986
    Assignee: Shepherd Products Limited
    Inventors: Carl J. Demrick, Ronald D. Hussey