Patents by Inventor A. David Hahn

A. David Hahn 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: 4577407
    Abstract: The invention is a dehorner for removing horns from the skulls of cattle or the like comprising a frame with a cutting side defining a plane and an operator side and having a fixed blade and a reciprocating blade which is projected toward the fixed blade during dehorning, both blades containing base portions which are contained within the plane of the frame and riser portions which extend outward from the plane of the frame on the cutting side so that the blades cut behind the base of the horn into the softer portion of the skull and remove all of the horn from the skull of the cattle.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: March 25, 1986
    Assignee: Jarvis Products Corporation
    Inventor: A. David Hahn
  • Patent number: 4345460
    Abstract: An apparatus and method for soft recovery of a projectile is disclosed. A formable element is placed in the path of the projectile, whereby the projectile becomes embedded in the element upon impact therewith. Gravitational or mechanical forces are applied to the combined projectile and deformable element to decelerate the same thereby making recovery possible.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: August 24, 1982
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Herbert D. Curchack, A. David Hahn