Plural Part Sheath Patents (Class 338/247)
  • Patent number: 11147127
    Abstract: A device (100, 200, 1100, 2100) converts electricity into heat. A first flat winding support (110, 130, 210a, 210b, 230a, 230b, 310a, 310b, 330a, 330b, 510, 610, 630, 710, 1110, 1130, 2110, 2130) including electrically insulating material, has a first electric heating element (140, 150, 240a, 240b, 250a, 250b, 340a, 340b, 350a, 350b, 540, 640, 650, 740, 750) wound thereon. The first flat winding support with wound first electric heating element is inserted into a housing (190, 290, 1190, 2190) electrically insulated against the housing. A second flat winding support, including electrically insulating material, has a second electric heating element (140, 150, 240a, 240b, 250a, 250b, 340a, 340b, 350a, 350b, 540, 640, 650, 740, 750), which is galvanically separated from the first electric heating element, wound thereon. The second flat winding support with wound second electric heating element is inserted into the housing electrically insulated against the housing.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 12, 2021
    Assignee: TÜRK & HILLINGER GMBH
    Inventor: Andreas Schlipf
  • Patent number: 7989739
    Abstract: An electric heater assembly suitable for use with molten metals, the heater employing improved heat transfer media.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: August 2, 2011
    Inventor: C. Edward Eckert
  • Patent number: 6046434
    Abstract: A sheathed-element glow plug for placement in the combustion chamber of an air-compressing internal combustion engine includes a sheath, a connector element for the glow current, and a tube secured in the sheath sealed at its end facing away from the sheath. A wire filament arrangement is embedded in insulating material within the part of the tube which protrudes from the sheath. The tube functions as a glow pencil. The sheath is manufactured using a first part, a second part, and an intermediate piece. The length of the intermediate piece is adjusted depending on the desired length of the sheathed-element glow plug.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: April 4, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Johannes Locher, Werner Teschner, Jorg-Chr. Nissen
  • Patent number: 4644140
    Abstract: An electrically heated spray nozzle, such as for spraying plastics, includes a highly compressed tubular heating body wound about a spray nozzle as a plurality of coil windings. The heating body has a tubular steel inner jacket containing a pair of spaced electric heating elements embedded in a high compressed powdered insulating material. A copper outer jacket encases the inner jacket and a hard solder connection joint as least as broad as the diameter of the outer jacket connects the outer jacket and hence the heating body to the nozzle. The number of coil windings per unit length of nozzle body is larger near the ends of the nozzle than near its middle. A steel wear-resistant lining may cover the surface of the nozzle bore.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: February 17, 1987
    Assignee: Turk & Hillinger GmbH
    Inventor: Erich Hillinger
  • Patent number: 4280045
    Abstract: An electrical heat generating system of the skin effect current type having a two part elongate hollow element of ferromagnetic material enclosing an insulated energizing conductor. One part of the hollow element comprises an open face channel having two elongated, coextensive, spaced longitudinal edges and the other part covers the open face of the channel. When the conductor is energized by an alternating current, the magnetic field generated thereby is confined within the interior of the hollow element to produce heat without any current passing through and along the outer peripheral surfaces thereof.
    Type: Grant
    Filed: January 4, 1979
    Date of Patent: July 21, 1981
    Inventor: Douglas Blackmore