Patents by Inventor Joseph A. Pietrorazio

Joseph A. Pietrorazio 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: 5975781
    Abstract: The mechanism of this lipstick has telescoping non-circular sections between base and pomade cup to assure their rotation together. Outward flanges help stabilize the sections laterally. The telescoping sections are assembled by axially collapsing a pre-form.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: November 2, 1999
    Inventors: Walter T. Ackermann, Joseph A. Pietrorazio
  • Patent number: 4938679
    Abstract: A male mold member includes a base or body having a central projecting core with an intermediate peripheral tapered seat between the core and body. The body, seat and core are intercepted by a plurality of cylindrical bores spaced uniformly about the male mold member and inclined toward the core axis. The bores receive core blades having cylindrical bodies. The core blades are exteriorly shaped in the area of the core to form sections which continue the contour of the core and seat. The blades may each have a thread matrix in the core area. After molding, a stripper bushing, engaging the molded product, pushes the product along with the core blades to a position at which the core blades are collapsed so that the product may be stripped. In the molding position the stripper bushing has a tapered bore opening which fits snugly against the tapered seat portions on the blades to orient the blades to proper position and immobilize them.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: July 3, 1990
    Assignee: Cores Unlimited, a partnership
    Inventor: Joseph A. Pietrorazio