Patents by Inventor Derek D. Roberts

Derek D. Roberts 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: 5048856
    Abstract: A lightweight, collapsible golf trolley is disclosed comprising an extruded elongate chassis member 1 of lightweight metal or alloy, e.g. aluminium. The chassis member 1 is of an inverted channel section with two downwardly and outwardly flared side wall sections 2, 3 against which are pivoted the wheel struts 4, 5 which are likewise lightweight alloy extrusions. Preferably the struts are in two halves forming a parallel linkage with the chassis and the wheel brackets 13. Hinged to the forward end of the chassis is a handle 27 which can be folded to a position alongside the chassis thus collapsing the wheel struts via the tie 37.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: September 17, 1991
    Assignee: Acushnet Limited
    Inventors: Mark A. Sanders, Derek D. Roberts
  • Patent number: 4961593
    Abstract: A lightweight, collapsible golf trolley is disclosed comprising an extruded elongate chassis member 1 of lightweight metal or alloy, e.g. aluminum. The chassis member 1 is of an inverted channel section with two downwardly and outwardly flared side wall sections 2, 3 against which are pivoted the wheel struts 4, 5 which are likewise lightweight alloy extrusions. Preferably the struts are in two halves forming a parallel linkage with the chassis and the wheel brackets 13. Hinged to the forward end of the chassis is a handle 27 which can be folded to a position alongside the chassis thus collapsing the wheel struts via the tie 37.
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: October 9, 1990
    Assignee: Acushnet Limited
    Inventors: Mark A. Sanders, Derek D. Roberts
  • Patent number: D291614
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: August 25, 1987
    Assignee: Prestige Group UK PLC
    Inventors: Derek D. Roberts, Keith Vallis
  • Patent number: D296768
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: July 19, 1988
    Assignee: Mars. G.B. Limited
    Inventor: Derek D. Roberts
  • Patent number: D319327
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: August 20, 1991
    Assignee: Acushnet Limited
    Inventors: Mark A. Sanders, Derek D. Roberts
  • Patent number: D368862
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: April 16, 1996
    Assignee: Mars Incorporated
    Inventor: Derek D. Roberts