Patents by Inventor Laszlo Plesa

Laszlo Plesa 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: 4531290
    Abstract: The invention relates to a cutting tool for manual grafting comprising a cutting element (1) with curved surface, a locating element (3) guided in a cutting direction (i) against the cutting element (1) for locating a plant part to be grafted and means for guiding the locating element (3) and fitting the cutting element (1), wherein the cutting element (1) on its convex surface is equipped with an edge and the cutting element (1) is shaped on the concave side under a relief angle (.beta.) in the range from 0.5.degree. to 3.degree., and on the convex side under a back slope (.alpha..sub.1) in the range from 0.75.degree. to 5.degree., both related to the cutting direction.
    Type: Grant
    Filed: June 5, 1984
    Date of Patent: July 30, 1985
    Assignee: "Aranykalasz" Mgtsz
    Inventor: Laszlo Plesa
  • Patent number: 4392304
    Abstract: A hand tool for use in performing manual agricultural grafting, comprises a fixed and a movable handle pivotally connected to each other and having working portions extending beyond the pivot. A coil tension spring connects the first handle to the working portion of the second handle thereby tending to spread the handles apart. The spring is connected to the same point on the working portion of the second handle as is pivotally connected to one end of an arm whose other end is pivotally connected to a positioning fork that locates the stock to be cut. The positioning device slides in a groove on the working portion of the first handle toward and away from a cutting edge carried by the working portion of the first handle.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: July 12, 1983
    Assignee: Aranykalasz Mgtsz
    Inventor: Laszlo Plesa