Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7161451 | Modular permanent magnet chuck A permanent magnet chuck for holding or lifting workpieces is formed of two overlying/underlying flat surfaced chuck layers having a common center of rotation. In each chuck layer an even number of permanent magnet plates radiate from the center of rotation at equal... | 01/09/2007 |
| 7095305 | Retractable magnetic sweeper A retractable magnetic sweeper includes a shell member, a retractable tubular member, a moving member, a connecting bar member, and a magnetic member. The shell member defines a receiving space. The retractable tubular member includes a lower tubular section connect... | 08/22/2006 |
| 7068134 | Electromagnetic work coil An improved electromagnetic work coil for use with an electromagnetic force machine that produces a pulling (tension) force on a conductive panel work piece. The electromagnetic work coil comprises a coil with insulated conductor windings passing through a clamped s... | 06/27/2006 |
| 7038566 | Magnetic pallet for anchorage of ferromagnetic parts for machining by machine tools with horizontal tool axis A magnetic pallet (1) for anchorage of a ferromagnetic part to be taken for machining to a machine tool with horizontal tool axis, the magnetic pallet (1) including a base plate (3), a vertical parallelepiped shoulder (5) extending from t... | 05/02/2006 |
| 6557429 | Method of using magnetic lifting devices A method of testing whether a magnetic lifting device may safely lift a particular load where the magnetic lifting device is placed adjacent to the load, some or all of the magnetic elements of the magnetic lifting device are spaced such that the lifting ... | 05/06/2003 |
| 6288623 | Holding apparatus for transport of conveyed items The invention relates to a holding apparatus for the transport of conveyed items, in particular the lifting, transporting, imbricating and stacking of ferromagnetic conveyed parts having at least two permanent magnets for generating a permanent magnetic f... | 09/11/2001 |
| 6229422 | Electrically switchable magnet system In the switchable magnet system disclosed herein, a central pole piece is backed by at least two permanent magnets having substantially different energies (Hc) so that one of the magnets is relatively switchable or reversible and the other is n... | 05/08/2001 |
| 6106682 | Thin-film processing electromagnet for low-skew magnetic orientation An electromagnet having one or more coils wrapped around a plate-shaped core produces a uniaxial magnetic filed in the vicinity of a substrate surface for orienting a magnetic film deposited onto the substrate surface. Variations in the magnetic mass of t... | 08/22/2000 |
| 6104271 | Composite rare earth magnet and method for separating ferrous material from non-ferrous material A composite magnet having a steel back plate on which an inner section of a first magnetic material having a high residual magnetic strength and an energy product greater than 25 million and preferably 35 million G-Oe or greater is positioned. Although po... | 08/15/2000 |
| 6104270 | Lifter with electropermanent magnets provided with a safety device A lifter comprising at least a reversible magnet (5, 5') arranged with its polarities oriented along a vertical axis above at least a magnet (6, 6') provided with at least a pair of permanent magnets (6a, 6a') arranged with the polarities oriented along a... | 08/15/2000 |
| 6002317 | Electrically switchable magnet system In the switchable magnet system disclosed herein, a central pole piece is backed by at least two permanent magnets having substantially different energies (Hc) so that one of the magnets is relatively switchable or reversible and the other is n... | 12/14/1999 |
| 5955935 | Electromagnet design Disclosed is an electromagnet design that can be quickly disassembled, repaired, and reassemble. In one embodiment the electromagnet comprises a housing having a housing cavity. Carved or molded into the housing is a pair of opposing slots. An electromagn... | 09/21/1999 |
| 5813661 | Electromagnetic lift apparatus A vehicle mounted electromagnetic jack system attachable to a vehicle for lifting portions or all of a vehicle. The system includes four electromagnetically operated jacks, a main console located within the vehicle, which operates each jack selectively or... | 09/29/1998 |
| 5813712 | Magnetic load lifting device A magnetic lifting device having a load lifting magnet with at least one magnetic coil arranged in a housing. A driven synchronous alternator is arranged in a housing for generating a voltage supplied to the magnetic coil. A supply line leading from the a... | 09/29/1998 |
| 5731705 | Electromagnetic lifting device An electromagnetic pick-up device for use with a forklift or other vehicle having a power lifting mechanism thereon, wherein the device is adapted to be easily picked up by the lifting mechanism and is completely self-contained and electrically powered su... | 03/24/1998 |
| 5677821 | Method and device for detecting full magnetization of electro-permanent magnets A method and device for detecting full magnetization of an electro-permanent magnet which includes at least one permanent magnet part and at least one coil. Current is passed through the coil over a certain period of time in order to magnetize the electro... | 10/14/1997 |
| 5630634 | Device for magnetically engaging objects having variable surface contours The specification discloses a magnetizable device for engaging articles of varying surface contours. The device is characterized by a number of independently movable magnetizable elements which depend from a slot in the device housing; the elements being ... | 05/20/1997 |
| 5512125 | Magnetic marker applying device for a printing press A marker applying device (50) for a substrate (14) having a plurality of markers (70) having magnetic material (74) in a backing (72) of the markers (70), and an adhesive (76) on a front surface (78) of the backing (72), a marker retainer (62) having a re... | 04/30/1996 |
| 5410289 | Electromagnet An electromagnet is provided having a housing and a coil disposed therein. The coil comprises three strips of material placed adjacent one another in an interleaved fashion. The coil comprises a strip of insulation, a magnetic strip, and an electrical con... | 04/25/1995 |
| 5267091 | Levitating support and positioning system A levitating support and positioning system (10) is provided for orienting an electromagnetic energy reflecting assembly (40). System (10) includes a reflective member (60) supported by an annular ring (50) having a plurality of superconductors (70) dispo... | 11/30/1993 |
| 5038128 | Magnetic gripper A magnetic gripper avoiding the disadvantages of the well-known devices of reduced lifting capacity, increased electric power consumption and small gripping force finds application in mechanical engineering for the transportation of ferromagnetic material... | 08/06/1991 |
| 4965695 | Permanent magnetic retaining device to move, affix or carry ferromagnetic parts or loads with electronic switching of the magnetic flux to release the carried load Permanent magnetic retaining device to move, affix or carry ferromagnetic parts or load with electronic switching of the magnetic flux to release the carried load includes a central iron core enclosed by a pair of magnet blocks secured by iron shoes, late... | 10/23/1990 |
| 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 |
| 4777463 | Magnetic fixture assembly A fixture for locating a workpiece in a precisely established position comprises a lower magnetic base and an upper fixture plate, the workpiece being fixtured on the plate. The base includes a permanent magnet which normally clamps the plate to the base ... | 10/11/1988 |
| 4594568 | Permanent magnetic charge taking or holding device The invention is directed to an electrically controllable permanent magnetic quick break switching system for raising, transporting and stacking ferromagnetic parts. The system includes a magnetized permanent magnet 1 centrally arranged in the direction o... | 06/10/1986 |
| 4507635 | Magnetic anchoring apparatus with quadrangular pole arrangement A magnetic anchoring apparatus, comprising in combination: an external ferromagnetic crown provided with a base plate and lateral walls; at least one group of four pole pieces defining pairs of corresponding poles of an anchoring surface, said pole pieces... | 03/26/1985 |
| 4473809 | Lifting electromagnet An electromagnet having a 360° flux pattern for attracting magnetizable items over the entire surface area of the magnet is disclosed. The electromagnet includes an outer casing having a circumferential portion constructed of non-magnetizable material, a... | 09/25/1984 |
| 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 |
| 4390856 | Multipole solenoids This specification discloses a solenoid actuator which combines a fast response with a high force capability. A multitude of magnetic poles act in parallel to create a traction force which is a function of the number of magnetic poles and with fast dynami... | 06/28/1983 |
| 4378548 | Lifting magnet incorporating cooling means A lifting magnet for warm steel slabs and the like incorporating means for cooling the metallic shell of the magnet to prevent damage to coil insulation due to overheating.... | 03/29/1983 |
| 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 |
| 4264887 | Electro-lifting magnet A coil for an electromagnet is made up of a spiral wound, anodized aluminum strip, and a strip of magnetic material wound in interleaved fashion with the central portion of the aluminum strip. The magnetic material strip is electrically insulated from the... | 04/28/1981 |
| 4185261 | Electromagnetic lifting device An electromagnetic lifting device comprising a plurality of electromagnets having a variety of individual magnetic pole face areas and an inverted generally U- or W-shape connected with each other and further rigidly connected to a suspension member, and ... | 01/22/1980 |
| 4162471 | Electromagnet lifting device An electromagnetic lifting device is provided with a pole piece of tapered or conical configuration extending outwardly from the load contacting surface of the magnet body. The tapered or conical configuration of the pole piece extends the effective magne... | 07/24/1979 |
| 4020436 | Lifting magnet for layered pipe The lifting magnet disclosed herein is adapted for lifting layered pipe. The pipe is engaged by a pair of elongate pole pieces which extend transversely to the length of the pipe, the pole pieces being energized by at least one coil disposed therebetween.... | 04/26/1977 |
| 3984796 | Magnetic hoists An electro-magnet or chuck for lifting scrap metallic particles, comprising a housing essentially of magnetic material. Enclosed are a plurality of spirally wound, superposed coils. Each coil has a central portion which is wound as a bimetal, that is, one... | 10/05/1976 |
