Patents by Inventor Robert J. Stevens

Robert J. Stevens 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: 6213559
    Abstract: A scarifying blade for use on earthmoving equipment (e.g. a road grader). The lower working edge of the blade has attached to it several spaced rotatable bits, and attached to at least one of the ends of the blade is an end rotatable bit at an angle of about 30 to 60 degrees relative to the spaced bits on the lower edge of the blade. The end bits prevent loosened material from spilling around the end of the blade and they also provide other additional advantages.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 10, 2001
    Inventor: Robert J. Stevens
  • Patent number: 6059378
    Abstract: A flange and shaft for a two-piece forged axle and method for forging same. The flange includes a hub formed concentric about a longitudinal axis wherein the hub defines an inner annular face, an outer annular face, and a bore extending therebetween. The bore includes a first tapered surface diverging from the longitudinal axis. The flange further includes an annular ring coaxial and integral with the hub as well as a locking arrangement integral with the tapered surface for mechanically coupling the flange for rotation with a shaft. Additional embodiments of the present invention include a two-piece axle having a flange generally configured as described above and a cylindrical shaft disposed in the bore of the flange. The shaft includes a first end portion having a first radial upset engaging a first locking arrangement on the flange to couple the flange for rotation with the shaft.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: May 9, 2000
    Assignee: Impact Forge, Inc.
    Inventors: Michael C. Dougherty, Terry M. McInerney, Robert J. Stevens
  • Patent number: 6041640
    Abstract: A method and apparatus for ejecting a member from a die. The method includes the steps of rotating the member about its axis and axially displacing the member relative to the die. The ejector device includes an ejector having an axis and twisting means for rotating the ejector when the ejector is axially displaced. The invention further includes a formed member including a body being symmetric about an axis, a spiral protrusion extending from the body, and connecting means for rotationally coupling the body to an ejector device.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: March 28, 2000
    Assignee: Impact Forge, Inc.
    Inventors: Terrance M. McInerney, Robert J. Stevens
  • Patent number: 5544413
    Abstract: A flashless metal connecting rod of the type having a one-piece construction and being fracturable into a cap portion and a body portion is produced by providing a precise preform of predetermined dimensions and a precise weight, induction heating the preform to a suitable forging temperature, sequentially compressing the preform between a plurality of unique sets of forging dies. The resulting final forging is both flashless and burrless. Preferably, the sequential compressing of the preform is accomplished through three sets of forging dies which progressively form the precision preform to its ultimate shape.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: August 13, 1996
    Assignee: Omni Forge, Inc.
    Inventors: Robert J. Stevens, Terrance M. Mclnerney
  • Patent number: 4585076
    Abstract: An apparatus for transporting an earth working implement, most specifically, a roller-chopper unit for use in forestry, wherein a transporting wheel assembly is disposed upon the earth working implement or its frame thereby providing transportation for the earth working implement from job site to job site. The wheel assembly has a stored position in which the wheels are maintained while the earth implement is performing its task at a specific job site and the transporting wheel assembly further being movable between a working position in which the wheels are maintained against the ground and support the earth working implement during transportation between job sites.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: April 29, 1986
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Robert J. Stevens, Clinton E. Bromley