Patents by Inventor Leigh R. Bench, Sr.

Leigh R. Bench, Sr. 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).

  • Laminated door to withstand vandalism and method of manufacture thereof
    Patent number: 4610119
    Abstract: A laminated exterior door has two polycarbonate sheets adhesively bonded to a composite substrate. The complementary surfaces of the polycarbonate sheets and the substrate are each abraded to a maximum depth of about 0.005 inch, and a pressure of about 100 p.s.i. is exerted to effect the adhesive bond. After bonding, the adhesive remains sufficiently "tacky" to accommodate the different coefficients of expansion between the polycarbonate sheets and the substrate. As a result, the laminated door has relatively-high impact resistance for withstanding vandalism, forced entry, burglary or the like.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: September 9, 1986
    Inventor: Leigh R. Bench, Sr.