Patents by Inventor James T. Rumbaugh

James T. Rumbaugh 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: 4186239
    Abstract: An improved filament for use in the cutting of weeds and vegetation, wherein the filament is attached at one end to a hub for imparting rotary motion to the filament. The centrifugal force extends the filament radially outwardly from the hub, with the energy of rotation being utilized to sever or cut the vegetation. The filament has a generally centrally disposed axis with an irregular or variant cross-section which fluctuates along the axial length of the filament. The variant cross-section with its fluctuations in cross-sectional area reduce the end or terminal fibrillation of the filament.
    Type: Grant
    Filed: February 7, 1978
    Date of Patent: January 29, 1980
    Assignee: Berkley & Company, Inc.
    Inventors: Charles J. Mize, James T. Rumbaugh
  • Patent number: 4060049
    Abstract: A water ski rope handle of molded plastic construction with floatation cavities in the handle portion and rope anchoring end caps rigidly secured to the ends of the same which provide for mounting of the rope with the knots in the ends of the rope being recessed to captivate the same and with the rope being angled from the handle to minimize fraying or wear thereof.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: November 29, 1977
    Assignee: Berkley & Company, Inc.
    Inventor: James T. Rumbaugh
  • Patent number: D248587
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: July 18, 1978
    Inventor: James T. Rumbaugh
  • Patent number: D256578
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: August 26, 1980
    Assignee: Berkley and Company, Inc.
    Inventors: Gary R. Oberg, James T. Rumbaugh
  • Patent number: D258228
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: February 10, 1981
    Assignee: Berkley & Company, Inc.
    Inventor: James T. Rumbaugh