Patents by Inventor Lawrence V. Robinson

Lawrence V. Robinson 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).

  • Garden tool with depth control mechanism
    Patent number: 5857528
    Abstract: A garden seeding tool is provided including a handle and a blade coupled to the handle and having a pointed end. Further included is a depth control mechanism for preventing the pointed end of the blade from penetrating the ground past a predetermined depth.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: January 12, 1999
    Inventor: Lawrence V. Robinson
  • Metal cutting tool guide
    Patent number: 3944194
    Abstract: An improved device for guiding a cutting torch on a metal surface which metal is a magnet attracting material comprises a magnetized base member and one or more guide members secured to the base member which guide members act as a template having a shaped surface for guiding the cutting torch. The device is provided with means for securing one of the guide members adjacent the edge of the base member and preferably means for holding or securing a plurality of additional guide members having different shapes or of different sizes when not in use. In a second embodiment, an assembly includes a support for holding the device of the invention on a pipe or other surface of revolution.
    Type: Grant
    Filed: February 21, 1974
    Date of Patent: March 16, 1976
    Inventor: Lawrence V. Robinson