Patents by Inventor Paul Leon

Paul Leon 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).

  • Head for and method of spot welding
    Patent number: 5556552
    Abstract: The present invention relates a head for a spot welding apparatus or a setting apparatus comprising an electrode (2) for to supplying a welding current or setting current to a piece (3) to be welded to another piece (4) or to set and also, to exert, during the welding operation or setting operation, an axial force (F) on said piece (3). The head has an electromagnet (8) for transmitting the axial force (F) to the electrode (2).
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: September 17, 1996
    Inventor: Paul Leon
  • Procedure for measuring the temperature of the area subjected to a rise in temperature at the time of an operation of welding or of crimping, and procedures of application to these operations
    Patent number: 5495088
    Abstract: A process measures the temperature of the space between one or more pieces that are subject to a rising temperature during a welding or a setting operation. Thermoelectric sources are used to form at least one of the interfaces placed between at least one electrode (5; 10,11) and the pieces (1; 13, 14) and between the pieces, to supply thermoelectricity by an electric resistance (16), to measure the current that flows through resistance (16).
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: February 27, 1996
    Inventor: Paul Leon
  • Machine head for spot welding for crimping
    Patent number: 5477020
    Abstract: The force (F) is derived from one or several electromagnetic forces each one of which is developed by the effect of a current (I.sub.s, I.sub.B) that circulates through a conductor (8) buried within a magnetic field.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: December 19, 1995
    Inventor: Paul Leon
  • Control for spot welding machine using electrodes as thermocouple
    Patent number: 5298711
    Abstract: The present invention relates to a process for controlling the parameters of a welding operation performed by a spot-welding machine. The machine has two movable electrodes which are connected to a source of current that supplies a welding current. The process controls the welding parameters on the basis of at least one electric signal that is a function of the temperature in the welding zone. The electrical signal or signals are taken between the terminal of one of the electrodes (10, or 20) and one of the parts to be welded (30, 40). The electrode and part together constitute a thermocouple.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: March 29, 1994
    Inventor: Paul Leon