Patents by Inventor Dennis M. Howard

Dennis M. Howard 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).

  • Method of manufacture of multi-layer roll having compliant PTFE top layer from a fibrillated PTFE membrane
    Patent number: 6141873
    Abstract: A micro-compliant roll having a PTFE top layer on a silicone rubber baselayer bonded to a metallic insert is provided. The roll with PTFE top coat is heated under pressure to a temperature below the PTFE crystalline melting point and quenched to provide a compliant top layer having crystallinity of no more than about 70 percent. The PTFE top layer is applied by adhering a fibrillated PTFE membrane to a silicone rubber baselayer using a primer of a blend of silane and a polyamide resin, or wrapping the PTFE film about an insert with end spiders placed in a sleeve mold and liquid or flowable elastomer is injected into the space between the insert and PTFE membrane.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: November 7, 2000
    Assignee: Ames Rubber Corporation
    Inventors: Chris F. DelRosario, Melvin F. Luke, John Navarra, Daniel Schmitz, Dennis M. Howard, Timothy D. Marvil