Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 4943098 | Parts supplying apparatus A parts supplying apparatus for carrying and supplying a part such as a projection nut to a predetermined point in space comprises a telescopic supply rod including an outer and inner shaft and, a magnet being fixed to a proximal end of one of the two sha... | 07/24/1990 |
| 4938516 | Retrieving tool A retrieving tool is set forth wherein an elongate vertically oriented hollow post includes a control cable directed therethrough terminating proximate an upper position relative to a handle portion angularly and integrally secured to the post at an upper... | 07/03/1990 |
| 4921292 | Magnetic attachment mechanism A magnetic attachment mechanism adapted for interfacing with the manipulator arm (11) of a remote manipulator system and comprising a pair of permanent magnets (31,32) of rare earth material which are arranged in a stator-rotor relationship. The rotor mag... | 05/01/1990 |
| 4905335 | Magnetic rings, bracelets and necklaces A device in the form of a ring for wearing on a finger, a bracelet for wearing on a wrist or a necklace for wearing on the neck bears a magnetic pick-up for engaging ferromagnetic objects. It may include other tools such as screwdriver blades, line cutter... | 03/06/1990 |
| 4893858 | Movable yoke-type lifting magnet device A movable yoke-type lifting magnet device including a core having first and second ends and at least one yoke provided so as to be movable relative to the core in a vertical direction at each of the first and second ends of the core. A movable framework a... | 01/16/1990 |
| 4865030 | Apparatus for removal of objects from body passages An apparatus for insertion into the urethra for attachment to and removal of an in-dwelling urinary continence device comprises generally a tubular body having a longitudinal bore with a slidable shaft therein. Slidable jaws are connected to a first end o... | 09/12/1989 |
| 4844661 | Method and device for driving tools into the ground This invention relates to a method and device for driving tools into the ground, comprising a chassis in which is slidably mounted an anvil connected by a set of rods to said tool and a hammer sliding in said chassis to strike the anvil, which device furt... | 07/04/1989 |
| 4840417 | Movable yoke-type lifting magnet device A movable yoke-type lifting magnet device including a main core wound with a coil and at least one yoke magnetically coupled to the core. The movable mechanism of the yoke enables the yoke to freely follow the contour of a workpiece to be lifted. An auxil... | 06/20/1989 |
| 4829855 | Magnetic nail holding device A magnetic nail holding device has a generally rectangular hollow housing. A pair of overlying jaw elements with magnetic tip portions project from an opening in a front end portion of the housing. One of the jaw members is stationary and the second jaw m... | 05/16/1989 |
| 4827956 | Remote grasping device A remote grasping device of simplified construction which requires little operator strength or manual dexterity. The device associated with a walking aid includes a pair of opposed jaw-like gripping members and a mechanism for selectively urging the membe... | 05/09/1989 |
| 4813729 | Magnetic retrieval tool A magnetic retrieval tool for retrieving magnetically attractable objects includes a magnet supported in a magnet housing on an elongated, flexible shaft. The magnet is positioned adjacent a face of the housing and is oriented with a line extending throug... | 03/21/1989 |
| 4802702 | Magnetic lifting tool A magnetic lifting tool is set forth for use in cleanup and removal of ferrous metals from construction sites, such as nails and the like. A circular lifting plate includes a plastic housing with an included steel pickup surface which has secured thereto ... | 02/07/1989 |
| 4735540 | Robotic disk handler system A robotic system includes a series of cassettes holding blank centrally apertured disks which are ejected in seriatim from each cassette and a plug inserted into the disk central aperture by manipulation of a robotic arm at that cassette position. Each di... | 04/05/1988 |
| 4715631 | Lifting magnet unit with a gripping mechanism A lifting magnet with a gripping mechanism generally comprises a lifting magnet capable of electrically magnetized for gathering and attracting magnetic articles, such as scraps of dismantled machines, broken automobiles and electric washing machines, a m... | 12/29/1987 |
| 4652845 | Magnetic holding device A magnetic holding device to be mounted to a magnetizable surface. It includes a body and a magnet having a pair of poles. A first and a second pole piece are mounted to the body adjacent to the magnet, each forming a continuation of a respective one of t... | 03/24/1987 |
| 4649116 | Magnetic means for withdrawing magnetic gel beads from an assay fluid Magnetic device for withdrawing magnetic gel beads or the like from a biological fluid and transferring them to an immunoenzymatic assay medium. This device includes a housing of insulating material, particularly of plastic material, into which is inserte... | 03/10/1987 |
| 4647268 | Part handling device A parts handling device is provided having a movable carrier on which is disposed a plurality of coil wound magnet poles. At least one of the poles is wound and with an A.C. source so that its current or voltage is subject to changes in response to induce... | 03/03/1987 |
| 4647094 | Arrangement regarding a gripping device The present invention concerns a gripping device provided with gripping claws (16) at one end of a tube (3), and at the other end of the tube (3), an operating handle (1). This handle (1) includes a trigger key (5) which is pivotable in the handle. During... | 03/03/1987 |
| 4643426 | Game playing implement A dual purpose game playing magnetic wand has one end thereof formed as a magnetized extension for selectively removing ferromagnetic game pieces from a playing board while the handle or other end of the wand is hollow having a wick and marking fluid ther... | 02/17/1987 |
| 4635328 | Device for exchangeable attachment of tools on an industrial robot A device for exchangeably attaching tools on an industrial robot comprising an attachment device. According to the invention, the attachment device (1) comprises a first member (2) rigidly attached to the outer portion (4) of a robot arm (3) and a second ... | 01/13/1987 |
| 4633563 | Sliver retriever A tool for removing ferrous particles from a can opened by a can opener wherein the tool has an elongated handle and a magnetic assembly at one end and the magnetic assembly comprises an annular magnet positioned below a flexible plastic disc which has a ... | 01/06/1987 |
| 4620739 | Bingo chip bell A bingo chip retrieving device including a molded cylindrical casing having a bottom wall and an open top, a cover closing the open top of the casing and having a cylindrical guide tube, a plunger mounted for reciprocal motion in the guide tube, a magnet ... | 11/04/1986 |
| 4603896 | Method and gripping head for gripping a layer of containers arranged on a plane The invention provides a process for gripping a layer of standing containers (23) such as bottles, and a head for gripping a whole layer of such containers. The process is characterized in that the layer of containers (23) is framed by four simultaneously... | 08/05/1986 |
| 4575143 | Pick-up tool A combination magnetic and mechanical object manipulation and retrieval tool. The magnetic portion of the tool is tubular in shape and is coaxially aligned with the mechanical, prehensile portion of the tool. The magnetic portion of the tool, which surrou... | 03/11/1986 |
| 4572561 | Tool for magnetically locating and recovering electrical wires A tool for magnetically locating and recovering an electrical wire suspended within a hollow wall. The tool includes a buoyant magnet suspended in a clear liquid within a transparent container. A rod-like plastic handle is used to manipulate the container... | 02/25/1986 |
| 4554703 | Magnetic eraser dust collector A device for use with an eraser of a rubber composition having magnetic particles dispersed therein. The device has a permanent magnet for attracting the magnetic dust created by use of the eraser. For the ready removal of the collected dust the device fu... | 11/26/1985 |
| 4523782 | Load-absorbing mount for electromagnets A load-absorbing mount for electromagnets includes a connecting member to which a plurality of chains are connected at one end, the chains being connected at the other end to the electromagnet. A lifting device such as a crane is connected to a load-carry... | 06/18/1985 |
| 4504088 | Lifting device A lifting device which can be used singly or in multiples to lift magnetically attractable material comprises a magnet having the operating surface covered by a non-magnetic contact member to form a fluid tight chamber therebetween, the operating surface ... | 03/12/1985 |
| 4499840 | Method for the salvage of a sunken vessel This invention discloses a method for the salvage of a sunken vessel able to be carried out either in deep or shallow sea area by utilizing electromagnets to direct a conventional clamping apparatus in precisely and effectively clamping as well as lifting... | 02/19/1985 |
| 4491450 | Pick-up and laydown machine An apparatus for picking up and laying down drill pipe casing and the like having a single endless line and support means extending axially of the apparatus toward the drilling rig to move the pivot point of the apparatus rearwardly thereof to increase it... | 01/01/1985 |
| 4465415 | Magnetic spreading device for a sheet metal stack of individual magnetizable laminations with a central hole For lifting the topmost, spread apart, magnetizable individual lamination with a central hole off a lamination stack stored without a mandrel and/or for transporting at least substacks of the lamination stack to a different location, a centering mandrel i... | 08/14/1984 |
| 4465993 | Magnetic holder A magnetic holder has a permanent magnet stator and a permanent magnet rotor, the magnetic mass of the latter being greater than that of the form and a play defining an air gap being provided between them so that the losses in the air gap compensate for t... | 08/14/1984 |
| 4456292 | Electromagnetic gripping arrangement for metallic workpieces An arrangement for gripping metallic workpieces formed of ferromagnetic materials or electrically highly conductive materials, by means of electromagnetic forcs. In one embodimet, two linear-motor stators perform as gripping elements by producing travelli... | 06/26/1984 |
| 4437362 | Tools for handling magnetic articles A tool (10) for handling a magnetic article (50) includes a member (12) having a jaw (18) which is movable toward and away from a member (14) having a corresponding jaw (14). A holder (34) is associated with jaw (20) of member (14) for releasably holding ... | 03/20/1984 |
| 4414522 | Fabricated lifting magnet assembly A lifting magnet assembly is disclosed which has a permeable magnetic case with a central core and an outer peripheral wall. Electrical winding means surrounds the coil and is inside the outer wall. A composite magnetically permeable case top is provided ... | 11/08/1983 |
| 4407038 | Magnetic sweeper A hand operated magnetic sweeper comprises a longitudinally elongated, reinforced body member molded in one piece of non-magnetic material with wheels mounted for rotation on the longitudinal ends thereof, the body including a handle socket on its top sid... | 10/04/1983 |
| 4378547 | Electromagnet When an electromagnet (2) is employed to lift and turn a slab of steel, there is a risk that the slab is dropped, causing undesirable noise. Also, with a flat contact surface of the electromagnet, there is jerking of the apparatus. Improvement in both res... | 03/29/1983 |
| 4350379 | Universal lifting magnet An electromagnet on the gripper of an automatic assembly machine has a specially shaped pole piece structure with curved surfaces and flat surfaces, part of which are undercut in depth, to handle several different objects. Motor end bells and rotors in va... | 09/21/1982 |
| 4343583 | Continuous chain stacker/unstacker A stacker/unstacker for receptacles such as bread pans or baskets or the like includes a pair of laterally spaced-apart endless chains having receptacle carriers mounted therebetween for conveying receptacles between an infeed-outfeed conveyor and the top... | 08/10/1982 |
| 4334708 | Electromagnet for moving iron objects The invention relates to an electromagnet for moving iron objects. It is formed with opposing magnetic heads (M1, M2), mounted at the ends of a carrying shaft (1), to which is also attached a steel cable (9). The electromagnet (M | 06/15/1982 |
