Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7598472 | Device for cooling welding caps A device for cooling welding caps of a welding apparatus includes a cooling line (10). A cooling agent is kept under pressure during removal of the welding caps. An expansion device (16) including an expansion chamber (34) is connected to the co... | 10/06/2009 |
| 7341457 | Electrical or optical connector capable of being immersed in a fluid environment The invention relates to an electrical or optical connector of the type comprising a fixed male connector part or receptacle (3) having at least one axial contact pin (7), and a mobile female connector part or plug (1) capable of being coupled t... | 03/11/2008 |
| 7291801 | Electrode for projection welding In an electrode for projection welding, an end cover (10) of metal having a through hole (19) is attached to the end of a main body (6) of metal having a cylindrical shape, a guide sleeve (12) of insulation material is disposed in the mai... | 11/06/2007 |
| 7265313 | Method and apparatus for improved cooling of resistance welding cap According to the invention a hollow cylindrical shank of electrically conducting metal is connected to a resistance welder. A coolant supply tube passes through the shank and has an interior coolant supply passage. The coolant supply tube has an outer diameter less ... | 09/04/2007 |
| 7238911 | Resistance welding tip with improved cooling system An improved cooling system for adapting to a two-component welding electrode device having a shank and cap, includes a retractable nozzle tube, a manifold, and an adjustment element for adjustably interconnecting the tube and manifold. A threaded bushing or plunger ... | 07/03/2007 |
| 7112757 | Programmable resistance seam welding apparatus and method A resistance welding apparatus having a pair of programmable ball electrodes carried on universally movable positioners. The positioners are programmed to move the ball electrodes simultaneously along a seam line so that the ball electrodes clamp and support opposit... | 09/26/2006 |
| 7108577 | Wedge-lock building blocks A building block that is releasably attachable to another block of compatible design by wedging the tongue of one block into the groove of another block, without the need for any intermediate adhesives, bonding materials or any other means of holding the blocks toge... | 09/19/2006 |
| 7078648 | Curved electrode for welding A curved electrode includes an installing portion to be installed in an electrode holder, an offset portion by which the offset amount is obtained, and a tip portion which comes into contact with the material to be welded W, the portions being formed separately and ... | 07/18/2006 |
| 7022934 | Connecting adapter for weld electrode An electrically and thermally conductive adapter for connecting a weld electrode to a tip holder portion of a welding device. The adapter has a first, threaded end, for removable engagement with a like-threaded receiving cavity in the tip holder. The threads may be ... | 04/04/2006 |
| 7009145 | Welding system having welding gun with self-contained locking trigger A welding system having a welding gun with a self-contained trigger and trigger locking assembly. The self-contained trigger and trigger locking assembly has a trigger that is pivoted to operate the power source. The self-contained trigger and trigger locking assemb... | 03/07/2006 |
| 7000416 | Cooling apparatus and plasma processing apparatus having cooling apparatus a cooling apparatus 110 comprises a primary refrigerant circulating circuit which allows a primary refrigerant CW1 whose temperature is adjusted by a heat exchanger 138 to circulate through an electrode to adjust a temperature of the electrode, ... | 02/21/2006 |
| 6911616 | Weld gun assembly A weld gun for performing a welding operation on a workpiece includes a pair of opposing arms, at least one arm movable relative to the opposing arm to apply pressure to the workpiece during a welding operation. A pair of identical or mirror image side plates suppor... | 06/28/2005 |
| 6903299 | Resistance welding tip assembly A resistance welding tip assembly having a welding tip support to which a welding tip is secured. A sleeve is constructed of an electrical insulating material, such as ceramic, and the sleeve includes a throughbore along a preset axis. The sleeve is slidably mounted... | 06/07/2005 |
| 6723944 | Pinch weld gun A pinch type weld gun wherein the weld arms are pivotally mounted on the frame structure via a ball bearing structure including annular members of insulative material positioned in apertures in the weld arms, inner races fixedly mounted on a common pivot pin, outer ... | 04/20/2004 |
| 6466004 | Apparatus and method for measuring weld circuit Apparatus and method for measuring weld current utilizing Hall effect sensors. The apparatus is immune from the position sensitivity drawbacks of Hall effect sensor based current memory devices through the utilization of a radially symmetrically disposed ... | 10/15/2002 |
| 6355900 | Nut position sensing weld point Provided herein is a weld point electrode useful for welding weld nuts to various selected substrates. Through use of the device of this invention, a process for attaching weld nuts to a substrate may be made more efficient than such processes according t... | 03/12/2002 |
| 6355901 | Welding electrode connecting adapter A connecting adapter configured to mate on opposite ends with a standard adapter shank and a standard welding electrode of the resistance type. The connecting adapter is a hollow body with male and female connecting portions. The male portion, integral wi... | 03/12/2002 |
| 6329626 | Welding apparatus A welding apparatus provided with a base frame having a power source portion, an electrode die portion having a lower base portion and an upper base portion at least one of which is driven to ascend and descend to close to and part from each other, plural... | 12/11/2001 |
| 6026838 | Method for detecting opening in fluid flow passageway and shutting off flow in response thereto An apparatus detects an opening in a fluid flow passageway such as occurs when a resistance welding cap which is cooled by the fluid flow becomes accidently detached from a welding machine. Upon detection of an opening, an air-actuated pinch lever is acti... | 02/22/2000 |
| 6011237 | Locking electrode tip for resistance spot-welding A resistance welding electrode body is fitted with a metal pin which serves as an anchor point for an electrode welding tip. The electrode welding tip contains two lead-in notches and diagonal grooves that allow the electrode tip to be locked onto the ele... | 01/04/2000 |
| 5950667 | Apparatus for detecting opening in fluid flow passageway and shutting off flow in response thereto An apparatus detects an opening in a fluid flow passageway such as occurs when a resistance welding cap which is cooled by the fluid flow becomes accidently detached from a welding machine. Upon detection of an opening, an air-actuated pinch lever is acti... | 09/14/1999 |
| 5705783 | Copper core weld gun A copper core weld gun assembly is provided with a substantially omega (Ω) shaped cross-section taken through each arm of the assembly. Concentric copper tubes are provided to carry cooling water and electric current to the electrodes of each arm. Specia... | 01/06/1998 |
| 5705782 | Internal coil spot welding device A spot welding device to secure the inner end of a coil of steel to itself to prevent uncoiling. The welding device is carried on an articulated support arm assembly that allows for positioning the welder within the coil on a gimble axis mount for proper ... | 01/06/1998 |
| 5541382 | Method and apparatus for spot welding A spot welding apparatus adapted particularly for joining aluminum workpieces utilizes a twisting or vibrating motion to break up oxides on the workpiece surface for improved welding and increased welding tip life. In one embodiment, a vibration inducing ... | 07/30/1996 |
| 5504299 | Resistance welding sensor An electrical resistance welding sensor assembly useful for monitoring various resistance welding process parameters in real-time during welding operations is provided with a base element adapted to be inserted into a tapered, water-cooled, electrode tip ... | 04/02/1996 |
| 5478981 | Resistive electrode An improved resistive electrode is disclosed for a welding apparatus for welding a battery terminal post to a battery bushing, The battery terminal post is electrically connected to a battery plate disposed within a battery case and the battery bushing is... | 12/26/1995 |
| 5478982 | Apparatus for fusing terminal or commutator wire connections on an armature or stator An apparatus and method for fusing terminal or commutator wire connections on an armature or stator, including an electrode, a pneumatic locking cylinder for driving the electrode into contact with the workpiece and applying a force to the workpiece, a lo... | 12/26/1995 |
| 5473135 | Spot welding electrode A spot welding electrode includes a shank within which cooling water is communicated, and an electrode tip. The shank is provided on the top thereof with a closed head, on which the electrode tip is dismoutably fixed.... | 12/05/1995 |
| 5471029 | Water cooled resistance welding assembly A water cooled resistance welding assembly includes a tubular housing with an internal coolant system for efficiently removing heat from the inboard surface of a flat faced electrode for resistance welding either studs or nuts.... | 11/28/1995 |
| 5387774 | Spot resistance-welding electrode; contact tip for such an electrode; machine for exchanging these tips This welding electrode is one wherein the welding cap 3 of the electrode body 1 carries a contact tip 4 which is securely fastened to it by brazing. Thus, the replacement of this contact tip can be carried out very easily by stopping the circulation of th... | 02/07/1995 |
| 5378868 | Shut off check valve for a welding gun A shut off check valve for controlling cooling fluid flow to weld tips of a resistance welding gun. The valve is disposed within the weld gun housing and selectively interrupts cooling fluid flow between fluid inlet and outlet ports.... | 01/03/1995 |
| 5349153 | Spot welding electrode and method for welding coated metals therewith A spot welding electrode designed for welding coated metals such as galvanized steel and a method of welding coated metals using the spot welding electrode. The electrode includes a housing having a hollow cavity with an open end and a closed end. The cav... | 09/20/1994 |
| 5310988 | Electrode for high current density plasma arc torch The diameter of a hafnium insert press fit into the bottom end of a copper electrode varies as a function of the level of current carried by the electrode. The diameter is the minimum necessary to support emission at that current level while also protecti... | 05/10/1994 |
| 5266768 | Cooling system for multi-tip spot welder A system and method for cooling multiple weld tips of a welder. The welding system includes a housing and a plurality of weld tip plungers, each plunger being independently movable with respect to the housing, and each plunger having a mechanism for recei... | 11/30/1993 |
| 5155320 | Non-redressing welding nose design A welding nose has a digital end and a root portion joined by a plurality of surface segments having a progressively increasing outside diameter for distributing welding loads in a radial direction and for forming a plurality of smooth surfaces joined at ... | 10/13/1992 |
| 5142650 | Bottom electrode for a direct current arc furnace The service life of a bottom electrode for a direct current arc furnace for producing steel is prolonged by using ZrB2 type sintered bodies for a contacting pins which constitutes a major part of the bottom electrode wherein the ZrB2... | 08/25/1992 |
| 5066845 | Resistance welding electrode coated with ceramic layer An outer surface of a resistance welding electrode tip is coated with a layer of an electrically conductive ceramic material. A preferred layer contains tungsten disulfide applied by chemical vapor deposition.... | 11/19/1991 |
| 5021627 | Electrode for resistance welding surface-treated sheets of steel and method of manufacturing such electrodes The invention concerns an electrode for the resistance welding of sheets of surface-treated steel. A thin disk of high melting-point metal is permanently attached to the electrode's shaft or cap at the contact surface. The grain of the high melting-point ... | 06/04/1991 |
| 4958056 | Electrode holder An improved electrode holder is disclosed that ensures a fluid cooled electrode will have an outer shank properly positioned relative to a cooling fluid tube. The electrode holder includes a ring portion with an inner periphery having an O-ring and a plur... | 09/18/1990 |
| 4947019 | Composite electrode for resistance welding A composite electrode for resistance welding of the present invention comprises an electrode made of a high-melting point metal or alloy, an electrode holder made of a copper alloy and an intermediate member made of a copper alloy, the electrode being und... | 08/07/1990 |
