The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 7261487 | Composite ball joint bearing for a ball joint assembly A ball joint assembly includes a housing (12) defining a socket chamber (18) and having an opening (32); a composite ball joint bearing (20) disposed within the socket chamber; a ball stud (24) supported by the composite ball joint... | 08/28/2007 |
| 7249893 | Rolling bearing and rod end bearing A rolling bearing and a rod end bearing are provided with a tilt mechanism and a rotary mechanism that are mutually independent. The tilt mechanism has a non-lubricated type spherical sliding bearing structure. The rotary mechanism has a rolling bearing structure wh... | 07/31/2007 |
| 7228669 | Suspended table assembly A suspended table assembly includes a first support and a second support that are vertically spaced from each other. A plurality of legs is provided. Each of the legs has a first end and a second end. Each of a plurality of first brackets is pivotally coupled to one... | 06/12/2007 |
| 7174751 | Method of using a kingpin lock holder The present invention is a method of using a durable, cylinder-like device that is inserted within the main cylinder part of a kingpin lock. One preferred embodiment, of several, has an outside diameter in close tolerance to the inside diameter of a kingpin lock dev... | 02/13/2007 |
| 6923592 | Ball and socket rollers load latch mechanism A location control mechanism includes a striker having a preferably spherically shaped lock ball and a pair of mutually adjacent socket rollers, each socket roller having a complementing preferably hemispherically shaped semi-socket which collectively provide a sing... | 08/02/2005 |
| 6343889 | Split-socket ball joint This invention is directed to a split-socket ball joint comprising, a stud with a ball portion and attachment portion, an upper and lower socket capable of being attached to each other, and at least one race disposed with either the upper or lower socket,... | 02/05/2002 |
| 6315486 | Joint mounted on rolling bearings A joint with a pin (1) comprising an inner member (2), a center member (6), a housing body (8) and a flange ring (12) arranged in one another via rolling bearings (4,5,10,13,14,18,19,20) for pivoting or rotating about their rotational axis (3,7,15) which ... | 11/13/2001 |
| 6296414 | Swivel joint mounted in the ceiling area of two hinge-linked vehicles The object matter of the present invention is a swivel joint (1) mounted in the ceiling area of two hinge-linked vehicles having an arm (50) arranged on one of the vehicles, whereas the end of said arm may be rotatably seized by a claw (8), the claw (8) h... | 10/02/2001 |
| 6213674 | Ball joint for a cable At the top of an upside-down box as a retainer 20 a recessed portion 24 is provided, with which an outer ring 23 which is coupled spherically with the curved surface of the cubic body 22 is coupled, the holding plate 26 fixes the position of the outer rin... | 04/10/2001 |
| 5624198 | Swivel connector A swivel connector for supporting a fixture and including a swivel socket, a spherically shaped hollow member located in the socket and forming with the socket a first universal joint, and two adaptors for connecting the swivel connector to a support and ... | 04/29/1997 |
| 5243264 | Tool fastening apparatus for industrial robots A tool fastening apparatus for industrial robots comprises a coupling unit attached to the arm of a robot and a coupling unit attached to a tool to be used with the robot. When the two coupling units are joined together, their relative position can be eas... | 09/07/1993 |
| 4986689 | Ball joint A ball joint including a socket defining a chamber and having an opening. The ball joint also includes a ball stud having a ball portion and a shank portion. The ball portion is located in the chamber of the socket. The shank portion of the ball stud proj... | 01/22/1991 |
| 4986688 | Structure of ball and socket joint for a vehicle steering control system A ball and socket joint for a vehicle steering control system, which includes an inner ball head received in a ball socket which simultaneously serves as an outer ball head and is received in a casing which has a shank connected to a drag link of a vehicl... | 01/22/1991 |
| 4905577 | Line-contact-type spherical bearing for connecting piston to connecting rod A hydraulically-operated piston machine includes at least one cylinder and a piston axially movably guided in the cylinder. The piston is connected to a crankshaft or the like by means of a connecting rod. The connecting rod and the piston each have spher... | 03/06/1990 |
| 4666329 | Ball joints A ball joint comprises a pin carrying a ball which is pivotally received in a house cup. The ball is supported both axially and radially on the pin by spaced apart sets of angular contact rolling bearings.... | 05/19/1987 |
| 4292845 | Connection assembly for rigid stem dial gauge A rigid stem dial gauge, such as a thermometer has an assembly which connects the thermometer stem to the pointer shaft and permits the two parts to be disposed at a range of angles to each other. The assembly comprises a pair of cylindrical housings, one... | 10/06/1981 |
| 4239144 | Apparatus for wire bonding A wire bonding machine for wedge bonding fine wires to semiconductor devices is provided with a rotating bonding head which is mounted on a fixed machine frame and having a X-Y table mounted on the fixed machine frame opposite a vertically movable bonding... | 12/16/1980 |