Patents by Inventor Joseph M. Robison

Joseph M. Robison 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).

  • Publication number: 20100000192
    Abstract: A mower and trimmer assembly is provided which permits normal mowing operations while also allowing the user to trim using an attached line-type trimmer. The assembly includes a mower and a separate trimmer. A coupling assembly interconnects the trimmer assembly and the power source of the mower. The coupling assembly includes a switch-controlled electromagnetic clutch for selectively creating a driving connection between power source and the cutting head of the trimmer assembly. The coupling assembly also includes a safety mechanism that prevents the trimmer from being powered during a mower operating condition.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 7, 2010
    Inventor: Joseph M. Robison
  • Patent number: 7467470
    Abstract: An improved line trimmer (10) for weed or grass cutting is provided which includes a operating head (16) having a rotatable housing (44) with cutting line outlet openings (68). A replaceable line cartridge (18) having a supply (118) of line (107) is mounted exteriorly of housing (44), and the free ends (120) of the line pass from the cartridge (18), through housing (44), and out the opening (68). Preferably, the cartridge (18) is mounted on an upright tubular drive shaft (42) coupled with housing (44), so that the line (107) may be threaded through the drive shaft (42).
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: December 23, 2008
    Inventor: Joseph M. Robison
  • Patent number: 7219431
    Abstract: An improved line trimmer (10) for weed or grass cutting is provided which includes a operating head (16) having a rotatable housing (44) with cutting line outlet openings (68). A replaceable line cartridge (18) having a supply (118) of line (107) is mounted exteriorly of housing (44), and the free ends (120) of the line pass from the cartridge (18), through housing (44), and out the opening (68). Preferably, the cartridge (18) is mounted on an upright tubular drive shaft (42) coupled with housing (44), so that the line (107) may be threaded through the drive shaft (42).
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: May 22, 2007
    Inventor: Joseph M. Robison