Patents by Inventor James D. Walker

James D. Walker 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: 4571320
    Abstract: Method and apparatus are disclosed using a robot to load and unload precut pieces of sheet molding compound and the like between an upper die and a lower die of a sheet molding press.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: February 18, 1986
    Assignee: General Motors Corporation
    Inventor: James D. Walker
  • Patent number: 4530279
    Abstract: A breakaway mechanism for a twine wrapping apparatus on a roll baling machine couples a twine dispensing member to a pinion which is in intermeshing engagement with a gear rack. The pinion and the gear rack cooperate to effect pivoting movement of the twine dispensing member. The breakaway mechanism permits the twine dispensing member to be uncoupled from the pinion when a predetermined load is exerted on the twine dispensing member during its pivoting movement.
    Type: Grant
    Filed: September 25, 1984
    Date of Patent: July 23, 1985
    Assignee: Sperry Corporation
    Inventor: James D. Walker
  • Patent number: 4517890
    Abstract: A twine wrapping apparatus for a roll baling machine includes a shuttle member which carries a gear rack that intermeshes with a pinion connected to a twine dispensing member such as a twine tube. When the shuttle member is moved generally transversely of the roll baling machine, the pinion is rotated by the gear rack resulting in pivoting movement of the twine tube.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: May 21, 1985
    Assignee: Sperry Corporation
    Inventors: Willis R. Campbell, James D. Walker
  • Patent number: 4517889
    Abstract: A twine cutting and clamping apparatus for a roll baling machine includes an arm having one edge which cooperates with a cutting member such as a knife to cut twine therebetween. The arm has another edge which cooperates with a resilient member such as a spring clip to clamp twine therebetween.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: May 21, 1985
    Assignee: Sperry Corporation
    Inventors: James D. Walker, Kenneth R. Underhill, Willis R. Campbell
  • Patent number: 4505197
    Abstract: A twine cut and clamp mechanism for a roll baling machine includes a pair of arms and a pair of intermeshing spur gears connected, respectively, to the arms. A lever is connected to one of the arms to pivot it. The spur gears cause concurrent pivoting of the other arm when the one arm is pivoted by the lever.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: March 19, 1985
    Assignee: Sperry Corporation
    Inventors: Paul S. Shenberger, James D. Walker, Willis R. Campbell
  • Patent number: 4421534
    Abstract: A tower of contact media, having thereon bio-slimes kept wet and active by a recirculating nutrient liquid, and through which gases, such as foul air of a sewage treatment plant, pass for odor removal by biochemical action aided by liquid trickling downward through the media, and which may be conventional in many respects, is provided with:(a) A gas recirculation system, i.e., means for drawing off gas which has passed once upwardly through the media and reintroducing it for passage through the media with raw incoming gases so that on the average the gases have more than one passage through the media,(b) Means for distributing on a layer of the media higher than the usual recirculation of liquid a solution such as hypochlorite for removal of residual odors left or caused by the recirculating liquid, and(c) Successive sections of media of differing coarseness.
    Type: Grant
    Filed: May 26, 1976
    Date of Patent: December 20, 1983
    Assignee: Welles Products Corporation
    Inventor: James D. Walker