Patents by Inventor Aitan Kalif

Aitan Kalif 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: 4386662
    Abstract: A leveler frame is attached to the three-point linkage of an agricultural tractor and serves to break up earth clods by vibrating action of its inclined blades. The implement comprises two lateral members and three cross members in the shape of one fixed inclined blade at the rear end of the frame and two vibrating blades pivotally fastened to the lateral members, one at the front end and one in the center of the frame. The pivoted blade at the front end is rigidly connected to an upstanding lever member which serves to attach the leveler frame to the parallel upper and lower linkage arms by means of vertically spaced pivots on the lever member. The second vibratory, pivoted blade--which is not obligatory--is connected to the upstanding lever by a link extending parallel to the lateral members.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: June 7, 1983
    Inventor: Aitan Kalif