Patents by Inventor Pierre Jonval

Pierre Jonval 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).

  • Electrical device with captive external cable clamp
    Patent number: 5139441
    Abstract: An electrical device, for example an industrial cable-mounted connector, comprises a cover including a cable outlet and an associated cable clamp for retaining a cable. The cable clamp comprises two jaws adapted to be clamped together. The jaws are separate from the cover. They are permanently attached to its exterior.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: August 18, 1992
    Assignee: Legrand
    Inventor: Pierre Jonval
  • Electrical connector socket suitable for use in explosive atomsphere
    Patent number: 4659160
    Abstract: A safety connector socket suitable for use in an explosive atmosphere comprises, adapted to cooperate with the pins of a plug, at least two phase or neutral receptacles, in addition to an optional ground receptacle. It further comprises at least as many separate explosionproof safety chambers as there are phase or neutral receptacles. Each of the phase or neutral receptacles is individually disposed in a respective one of the explosionproof safety chambers.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: April 21, 1987
    Assignee: Legrand
    Inventor: Pierre Jonval