Resistance welding assembly

Claim 1

A RESISTANCE WELDING ASSEMBLY FOR MICROWELDING OF ELECTRONIC MODULES OR THE LIKE COMPRISING: A FIRST ELECTRODE EXTENDING FROM A WELDING HORN AND TERMINATING IN A TIP PORTION, SAID FIRST ELECTRODE HELD IN PLACE BY SAID WELDING HORN AND AN INTERFITTING MEANS, SAID INTERFITTING MEANS COMPRISING A CYLINDRICAL METAL PIECE POSITIONABLE WITHIN SAID HORN TO FRICTIONALLY COUPLE SAID FIRST ELECTRODE TO SAID HORN, WHEN SAID PIECE IS IN A FIRST POSITION, AND WHEN SAID PIECE IS IN A SECOND POSITION ALLOWING REGULATION OF THE POSITION OF SAID FIRST ELECTRODE; A SECOND ELECTRODE CONCENTRIC WITH SAID FIRST ELECTRODE AND HELD IN POSITION IN A HORIZONTAL DIRECTION BY AN ELECTRODE SUPPORT MEANS, SAID SECOND ELECTRODE BEING AXIALLY SLIDABLE WITH RESPECT TO SAID FIRST ELECTRODE AND TERMINATING IN A TIP PORTION, SAID SECOND ELECTRODE ELECTRICALLY COUPLED TO ELECTRICAL GROUND; SAID TIP PORTIONS OF SAID FIRST AND SECOND ELECTRODES FORMED BY PASSING A PLANE THROUGH THE LONGIRUDINAL AXIS OF EACH OF SAID ELECTRODES SUCH THAT THE SPACING BETWEEN SAID TIP PORTIONS OF SAID FIRST AND SECOND ELECTRODES IS VARIED BY ROTATING SAID FIRST ELECTRODE ABOUT ITS LONGITUDINAL AXIS; MEANS INSULATING SAID FIRST AND SECOND ELECTRODES FROM ONE ANOTHER; A SPRING BIAS MEANS RETAINED WITHIN SAID ELECTRODE SUPPORT MEANS, SAID SPRING BIAS MEANS URGING SAID TIP OF SAID SECOND ELECTRODE TO A PREDETERMINED VERTICAL POSITION WITH RESPECT TO SAID TIP OF SAID FIRST ELECTRODE, SAID SPRING BIAS MEANS ESTABLISHING PREDETERMINED PRESSURE RELATIONSHIP BETWEEN SAID TIPS OF SAID ELECTRODES AND A WORKPIECE SO THAT WELDING IS ACCOMPLISHED WITHOUT DISTORTING SAID WORKPIECE; AND MEANS COMPRISING A BUSHING AND A COOPERATING LOCKNUT POSITIONED ON THE BUSHING FOR REGULATING SAID PERDETERMINED PRESSURE RELATIONSHIP TO A DESIRED PRESSURE RELATIONSHIP BY ALTERING SAID POSITION OF SAID LOCKNUT ON SAID BUSHING.