Patents by Inventor John W. Campbell

John W. Campbell 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: 4512412
    Abstract: A control panel for the operator's control station of a fire fighting apparatus of the type including a body defining an outwardly opening side recess is provided. The control panel supports various gauges, switches and other operating controls and has a plurality of openings formed therein through which water inlet and outlet couplings as well as valve controlling operators project. An elongated upstanding support member is disposed adjacent and extends along a generally straight side marginal portion of the recess and is mounted from the body for guided limited lateral outward and inward shifting relative to the body along a path which generally parallels the direction in which the recess opens. The control panel includes a marginal edge portion corresponding to the side marginal portion of the recess and the panel marginal edge portion is hingedly supported from the support member for angular displacement relative thereto about an axis generally paralleling the support member.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: April 23, 1985
    Inventor: John W. Campbell
  • Patent number: 4328594
    Abstract: A prosthetic foot includes an elongated one-piece semi-rigid keel having a half dome-shaped arch and a thinned toe break region. A rigid bolt block, with a lower portion of reduced size to accommodate a cushioned heel, is fastened to the posterior end of the keel. To rigidify the foot during toe-off, a first substantially inelastic strap is provided. This first strap is fastened at one end to the bolt block, extends across a lower region of the arch, and is fastened at its opposite end to the keel forwardly of the toe break region. A second substantially inelastic strap is positioned above the first strap and is fastened at one end to the bolt block, extends across a mid-portion of the arch, and has its other end fastened to the keel between the arch and toe break region. This second strap rigidifies the foot when in a foot flat position. A flexible foot-shaped cover layer generally envelopes the two straps, keel and bolt block, fills in the toe break region and a large portion of the arch.
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: May 11, 1982
    Inventors: John W. Campbell, Charles W. Childs
  • Patent number: 4214398
    Abstract: A fishhook having an offset in its shank which acts as a lever to turn the hook as pressure is applied to the line so as to engage the point in the flesh of the fish regardless of the angle at which pressure is applied to the line.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: July 29, 1980
    Inventors: John W. Campbell, Lawrance W. Campbell