Patents by Inventor Andrew L. Pertici

Andrew L. Pertici 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: 4321574
    Abstract: A dual element, time delay fuse with greater blowing time accuracy and improved operating characteristics wherein any bridging of the circuit opening air gaps by molten alloy is effectively precluded during operation of the fuse, especially operation initiated by small protracted overloads. This is accomplished with a fuse element assembly comprising a series connection of a short circuit member, a central absorber member and a heater element member, the central absorber member held to the short circuit member and heater element member by masses of fusing alloy on each of its ends, which masses of fusing alloy are prevented from combining in fabrication and circuit opening operation by flow restricting apertures located near each end of the absorber member.
    Type: Grant
    Filed: October 21, 1980
    Date of Patent: March 23, 1982
    Assignee: McGraw-Edison Company
    Inventor: Andrew L. Pertici