Patents by Inventor Douglas Edward Swarsbrick

Douglas Edward Swarsbrick 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: 3962810
    Abstract: A stopper component for use in trawling equipment which is made of metal and has one end formed to resemble a chain link, an opposite end in the form of a shackle and a central portion intermediate the two ends provided with outwardly projecting shoulders to prevent the stopper component from being passed through a Kelly's Eye.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: June 15, 1976
    Assignee: Parsons Controls Limited
    Inventors: Anthony Alan Buschini, Douglas Edward Swarsbrick
  • Patent number: 3962811
    Abstract: A shackle component for use in a fishing trawl in the form of a pair of shackles or clevises arranged in back-to-back relationship with the free ends of the arms of each extending away from each other, each of the arms of each shackle being apertured to receive a connecting pin and at least one of the arms of each shackle having a further aperture therein to receive a locking pin to hold the connecting pin in place.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: June 15, 1976
    Assignee: Parsons Controls Limited
    Inventors: Anthony Alan Buschini, Douglas Edward Swarsbrick
  • Patent number: 3962755
    Abstract: A link component for use in trawling gear which is made of metal and has at one end a closed loop, the other end having two projecting arms which, together with part of the loop, provide a clevis or shackle, the arms of which have apertures to receive a connecting pin for connection to an end link of a chain and wherein the loop is sufficiently wide at its end remote from the shackle to receive a pair of couplers for two wire ropes or chains and wherein at least one of the wide pieces of the closed loop is provided with a recess or flat sufficiently wide to enable a hook of predetermined size to be hooked onto the loop provided the throat of the hook is correctly orientated.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: June 15, 1976
    Assignee: Parsons Controls Limited
    Inventors: Anthony Alan Buschini, Douglas Edward Swarsbrick
  • Patent number: 3959909
    Abstract: A Kelly's Eye component for a fishing trawl is disclosed, the component being formed of metal and having one end in the form of a ring defining an aperture which is sufficiently large to allow passage of a trawl rope, the other end of the component being in the form of a shackle, the two arms of which are apertured to receive a connecting pin and at least one of the arms having a further aperture therein extending at right angles to the first aperture and arranged tangential thereto to receive a locking pin so that an end link of a chain may be connected to the shackle.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: June 1, 1976
    Assignee: Parsons Controls Limited
    Inventors: Anthony Alan Buschini, Douglas Edward Swarsbrick