Patents by Inventor William F. Pellerin

William F. Pellerin 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).

  • Electrolytic capacitor having a highly strained elastomeric sealing element
    Patent number: 4025827
    Abstract: A porous valve-metal capacitor is housed in a metal can and sealed therein by means of an outer glass-to-metal seal, an elastomeric bung and an inner plastic sealing member. The bung is compressed between these inner and outer sealing members so as to be highly strained, the ratio of the compressed to the uncompressed diameters thereof being at least 1.25 and the elastomeric bung being squeezed out radially to occupy at least 75% of the interface area between the inner and outer seals. This capacitor is capable of meeting the requirements of a severe test after 200 cycles from -55.degree. C to 125.degree. C.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: May 24, 1977
    Assignee: Sprague Electric Company
    Inventors: William F. Pellerin, Stephen C. Lovely