Patents by Inventor Robert Strachan

Robert Strachan 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: 5264170
    Abstract: Pultruded profiles are manufactured as a die station which is fed with resin via a pump. The core of the profile is formed by granular material fed to station from a hopper through the interior of a hollow duct which is essentially vertically disposed, above the station, so that the granular material is moved under the influence of gravity. The exterior surface of duct is profiled and the skin-forming materials for the profile are guided by the profiled surface to the die station. The skin forming materials are runs of cloth. The pultruded profile may be tubular or hollow so that it has both an external surface and an internal surface in which case the internal surface incorporates a further resin bonded cloth fed to the interior of the die station over the external surface of a mandrel.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: November 23, 1993
    Assignee: Caledonia Composites Limited
    Inventor: Robert Strachan
  • Patent number: 5120380
    Abstract: In the manufacture of an in-line cored pultruded profile, filler is bonded with polyester or methacrylate type resin and enclosed in fiberglass, carbon or aramid fiber cloth. The cloth is preformed to replicate the desired profile shape by means of a pre-die former and the external surface of a hollow duct. Filler is delivered into the interior of the duct by a variable output venturi blower. Precise distribution of packing is effected by the internal configuration of the duct and the creation of a raised moving wall when non-foaming resin is used. Precise configuration of ducts can be achieved by fashioning from reinforced cloth. Adjustable start drums provide time and labor saving benefits. Complete resin wet through using either foaming or non-foaming resin ensures exellent filler bonding and surface finish.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: June 9, 1992
    Assignee: Caledonia Composites Limited
    Inventor: Robert Strachan
  • Patent number: 4287583
    Abstract: A control panel unit for a cooking apparatus having a clock construction for indicating the time of day and a timer control unit for selecting a delayed time period and a cooking time period for causing the apparatus to provide a cooking operation for the cooking time period following the elapsing of the delay time period, the clock construction comprising an electronic clock unit and the timer control unit comprising an electromechanical control unit operating independently of the electronic clock unit.
    Type: Grant
    Filed: July 20, 1979
    Date of Patent: September 1, 1981
    Assignee: Robertshaw Controls Company
    Inventors: Robert Strachan, Carl J. Goodhouse
  • Patent number: 4186284
    Abstract: An electrical switch construction having two pairs of cooperable contacts each pair of which is adapted to be opened and closed independently of the other pair, a single manipulator being carried by the construction and being operatively associated with the pairs of contacts to operate either pair independently of the other pair by a cam member carried by the manipulator and having a generally rectangular profile defined by two right angle corners and two rounded corners.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: January 29, 1980
    Assignee: Robertshaw Controls Company
    Inventor: Robert Strachan
  • Patent number: 4182112
    Abstract: A control panel unit for a cooking apparatus having a clock construction for indicating the time of day and a timer control unit for selecting a delayed time period and a cooking time period for causing the apparatus to provide a cooking operation for the cooking time period following the elapsing of the delay time period, the clock construction comprising an electronic clock unit and the timer control unit comprising an electromechanical control unit operating independently of the electronic clock unit.
    Type: Grant
    Filed: January 26, 1978
    Date of Patent: January 8, 1980
    Assignee: Robertshaw Controls Company
    Inventors: Robert Strachan, Carl J. Goodhouse