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| Number | Title | Issue Date |
| 6562249 | Method utilizing a magnetic assembly during etching thin shadow masks In an improved method of etching apertures in a thin metal sheet to form a shadow mask for a color picture tube, the metal sheet has a first acid-resistant stencil on one major surface thereof and a second acid-resistant stencil on the other major surface... | 05/13/2003 |
| 6412837 | Grapple A grapple provides a body and a tine. The tine has first and second ends and a plurality of arms located at the first end. The arms are separated by a pair of outer slots and at least one inner slot. The inner slot extends further into the tine relative t... | 07/02/2002 |
| 6168219 | Grapple A grapple includes a ferrous body with a plurality of tines pivotally connected thereto. A magnetic coil is disposed within the ferrous body. When the magnetic coil is energized, it creates a magnetic field within the area defined by the tines. The tines ... | 01/02/2001 |
| 6155619 | Grapple having one or more tines that include a magnet An electromagnet is attached to the outer surface of at least one of the tines of a grapple. Preferably, the electromagnet is attached near the free end of the tine so that the bottom surface of the electromagnet, which extends between the inner and outer... | 12/05/2000 |
| 5998944 | Method and apparatus for controlling a lifting magnet of a materials handling machine An apparatus and method for controlling a lifting magnet (12) of a materials handling machine (10) to eliminate arcing between contacts (70-80) within the magnet controller (26) as is well as is large voltage spikes. The controller (26) selectively excite... | 12/07/1999 |
| 5977730 | Method and apparatus for controlling the flow of hydraulic fluid A hydraulic circuit (124) is defined in a manifold (130) which may be aluminum, steel, or any other suitable material. The circuit (124) regulates the flow of hydraulic fluid to the hydraulic motor (120) and thus ensures that the motor rotates at an essen... | 11/02/1999 |
| 5959416 | Method and apparatus for controlling a lifting magnet of a materials handling machine An apparatus and method for controlling a lifting magnet (12) of a materials handling machine (10) to eliminate arcing between contacts (70-80) within the magnet controller (26) as well as large voltage spikes. The controller (26) selectively excites the ... | 09/28/1999 |
| 5762388 | Grapple A grapple includes a ferrous body with a plurality of tines pivotally connected thereto. A magnetic coil is disposed within the ferrous body. When the magnetic coil is energized, it creates a magnetic field within the area defined by the tines. The tines ... | 06/09/1998 |
| 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 |
| 5411304 | Grab bucket of electrohydraulic pressure type with lifting magnet The grab bucket of the present invention comprises the grabbing claws provided for opening and closing around the main body suspended from a crane, the electromagnet provided movably upward and downward from the ordinary location just underneath the main ... | 05/02/1995 |
| 5340136 | Cylinder cart with magnetics A hand cart for transporting gas cylinders has a magnetic bed arrangement for securing the steel cylinders to the cart during the pick-up and transportation operation. A cam-operated discharge arrangement, operated by foot-pedal, serves to separate the cy... | 08/23/1994 |
| 5310304 | Load-lifting device A load-lifting device includes a load carrying beam at whose underside are arranged load-lifting magnets and which has on both sides vertical support columns, wherein securing arms of a load securing device are arranged on the vertical support columns so ... | 05/10/1994 |
| 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 |
| 4641795 | Printed product coil A printed product coil or wound product package consists of a hollow winding core or mandrel upon which mutually slightly overlapping printed products as well as a winding band or partitioning strap wound in between the winding layers are wound-up. The wi... | 02/10/1987 |
| 4600349 | Apparatus for transporting and positioning sheet metal plates Apparatus for transporting sheet metal plates from a supply source and positioning the plates at a plate shearing table includes a carrier capable of horizontal transport. A device is secured to the carrier for effecting up and down and turning movement. ... | 07/15/1986 |
| 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 |
