Patents by Inventor Edwin R. Mayne

Edwin R. Mayne 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).

  • Plug seedling extractor and method of using same
    Patent number: 5104278
    Abstract: A plug seedling extractor for use with a plurality of variously-sized plug seedling trays is disclosed. The extractor has a base plate assembly with a plurality of extractor pins and an extraction table assembly with a plurality of holes aligned with the extractor pins. A plurality of threaded bolts having lock nuts mate with coupling nuts on the base plate assembly to slidingly connect and vary the height between the extraction table assembly and the base plate assembly. Each of a pair of hand-actuated levers are connected to the extraction table assembly and the base plate assembly on one side to cause relative motion between the extraction table assembly and the base plate assembly. The plug seedling tray slides over the extraction table assembly and is held in position by the cooperation of vertical restraining bars directly over the tray with rear and side alignment bars.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: April 14, 1992
    Assignee: Atlantic Sunline Ltd.
    Inventor: Edwin R. Mayne