Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7319375 | Universal bench magnet An improve material holding device using magnetic force of variable strength comprising: an electromagnet mounted to a universal bracket adapted to mount to a vertical or horizontal surface, or a vise using the vise bar integrally attached to the underside of the ma... | 01/15/2008 |
| 7212277 | Substrate holding technique An object holding apparatus including a chuck for holding an object, a holder configured to hold the chuck, a generator provided in the holder and configured to generate a field related to an attraction force, a member provided in the chuck and configured to be attr... | 05/01/2007 |
| 7201059 | Magnetic force sensor assembly for workholding fixtures A magnetic force sensor assembly for a workholding fixture includes a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture. The magnetic force sensor assembly also includes a sensor operatively supported by the bas... | 04/10/2007 |
| 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 |
| 6489871 | Magnetic workholding device A magnetic device includes a cylindrical outer pole having a central axis and formed of a ferromagnetic material including a circular base and a cylindrical sleeve defining an outwardly opening cylindrical cavity. A reversible magnetic unit located in sai... | 12/03/2002 |
| 6278350 | Holding device for workpieces in the form of even metal sheets A holder device for workpieces in the form of even or flat metal sheets of a magnetically attractable material, which are to be welded together along a connecting path at edges thereof. The holder device forms a support face for the sheets to rest on. The... | 08/21/2001 |
| 5693243 | Method and apparatus for heat treatment of an element by treatment devices engaging the element on both sides In the apparatus (10) and the method according to the invention, two temperature treatment devices (e.g., laminating rollers 14, 16) which are to be contacted with an element to be subjected to heat treatment (e.g., proof 50 with color particles 52), are ... | 12/02/1997 |
| 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 |
| 4956625 | Magnetic gripping apparatus having circuit for eliminating residual flux A magnetic gripping apparatus, of the permanent magnet type, comprising a base plate and peripheral walls, at least a first and a second pole units, each pole unit comprising a main pole piece having an outer face defining a gripping surface, main permane... | 09/11/1990 |
| 4953136 | Downhole seismic exploration device and apparatus A downhole seismic exploration device comprises a seismic detector such as a geophone and a magnetic clamp, supported by Q-rings in an open cradle carrier which can be secured to a cable linking several such devices into an array. The array is lowered int... | 08/28/1990 |
| 4847582 | Magnetic gripping apparatus A magnetic gripping apparatus for gripping metal parts on machine tools, conveyor systems and the like. The apparatus comprises an external ferromagnetic yoke having a base plate and lateral walls; a first and at least a second pole unit, each unit compri... | 07/11/1989 |
| 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 |
| 4542361 | Permanent magnet field diverted to do useful work Permanent magnets are used to perform useful work. The field of a first permanent magnet is diverted by electromagnetic coils to such a low value that another opposing permanent magnet can approach the first magnet without the application of undue force. ... | 09/17/1985 |
| 4402032 | Electromagnet power supply and demagnetizer An electronic current control device for energizing and de-energizing an electromagnet, such as a magnetic chuck, includes a DC power source preferably in the form of a phase-controlled SCR power unit. A conduction angle control signal is routed to positi... | 08/30/1983 |
| 4354149 | Battery charge system A battery charge system for a transfer magnet (heretofore generally known as a lift magnet) and for a chuck control. In the case of the transfer magnet, the battery provides constant power, while in the case of the chuck control, it serves as a standby po... | 10/12/1982 |
| 4032828 | Battery back-up system for electromagnets A system for supplying power to one or more electromagnets which includes a main power rectifier source and battery system including batteries charge controls and warning devices for one or more magnets such that in the event the main power source and/or ... | 06/28/1977 |
