Patents by Inventor Charles W. Carpenter

Charles W. Carpenter 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: 5425768
    Abstract: A spacer for use in the centering of the far end portion of the stem of a prosthetic implant is molded of a synthetic polymeric material compatible with the cement employed to affix the prosthetic implant within the natural bone and includes a post for coupling the spacer with the stem, a flanged spacer portion for extending longitudinally and radially beyond the stem to engage the natural bone for centering the stem, and a reinforcing core extending longitudinally into the post and into the flanged spacer portion to reinforce the spacer against stresses to which the spacer is subjected, especially at a location between the post and the flanged spacer portion of the spacer, during implant and during subsequent curing of the cement.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: June 20, 1995
    Inventors: Charles W. Carpenter, Rafail Zubok
  • Patent number: 3982978
    Abstract: This invention relates to a method and apparatus for making pile fabrics wherein a sheet of longitudinally striated thermoplastic film formed into loops is fusion bonded to a thermoplastic backing sheet by sonic energy to bond the film to the backing sheet at the lines of contact without loss of orientation in either the striated film or the backing sheet and then subsequently the bonded striated film is fibrillated to separate the loops into individual filaments thereby forming a pile fabric.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: September 28, 1976
    Assignee: Hercules Incorporated
    Inventor: Charles W. Carpenter