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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 4626665 | Metal oversheathed electrical resistance heater A corrosion-resistant long heater is formed by encasing segments of metal-sheathed, mineral-insulated, electrical resistance heating elements within a metal oversheath which oversheath is substantially completely impermeable and is compressed inwardly to ... | 12/02/1986 |
| 4593182 | Electric cartridge heater A cartridge heater includes an inner casing in which a heating element is accommodated. This inner casing is surrounded by an coaxially arranged outer casing of larger diameter so that an annular space is defined between the inner and outer casings. In th... | 06/03/1986 |
| 4553025 | Insulated electric heating element An insulated electric heating element particularly suitable for use in a hot plate or electric stove is disclosed. The insulated electric heating element (11) includes a unitary two chamber housing (21). The chambers are located one above the other. A U-s... | 11/12/1985 |
| 4468556 | Electric heating elements The electric heater herein disclosed is particularly adapted to heat a fluid and to provide a broad, substantially flat heater surface exposed to the fluid to be heated. The heating element is well adapted for deep fat frying use in that it is of high vol... | 08/28/1984 |
| 4421975 | Heating element assembly An immersion heater having the bent legs of the individual electrical elements joined to a wall by a press fit between tapered element surface and tapered wall apertures. A movable brace interconnects the element legs and dampens vibration.... | 12/20/1983 |
| 4349727 | Heater unit An elongated heater unit including an elongated resistor helix, terminals connected to the ends of the helix, at least a first surrounding metallic sheath, powder insulation material disposed within the first sheath and spacing the resistor helix from the... | 09/14/1982 |
| 4346287 | Electric heater and assembly An electrical heater comprising a heating element, a sheath surrounding the heating element and spaced therefrom, the sheath having an end spaced from an end of the heating element, electrical insulation between the heating element and the sheath, an inte... | 08/24/1982 |
| 4319127 | Electric heating elements Electric heating elements, particularly adapted for use in solder pots or in other uses wherein a substance is to be maintained in a molten or plastic condition, and commonly termed in such uses as over-the-side heaters. A conventional tubular heater is d... | 03/09/1982 |
| 4314401 | Sheathed heating element and sealing of sheathed electric heating element A method of sealing an electric heating element having an electric heating wire inside a tubular metal sheath and electrically insulated therefrom by a compacted filler, comprises impregnating the filler at and in the vicinity of the end of the sheath wit... | 02/09/1982 |
| 4287502 | Cartridge heater structure An elongate, electric resistance heater having a tubular case, a plug in and spaced from one end of the case and elongate, flexible jacketed power lines extending through the plug and axially outward from said end of the case, an elongate, tubular, flexib... | 09/01/1981 |
| 4263577 | Electric tubular heating body and process for its manufacture An electric tubular heater with a bent jacket tube made of strip material, an electric resistance heating element running in the jacket tube and an electrically insulating embedding material surrounding the resistance heating element. The jacket tube is f... | 04/21/1981 |
| 4125761 | Bilateral heater unit A bilateral heater unit including an elongated sheath in the form of two substantially parallel adjacent leg portions interconnected by a return bend portion formed of the elongated sheath bent back upon itself and integral with the adjacent parallel exte... | 11/14/1978 |
| 3982099 | Bilateral heater unit and method of construction A heater unit of bilateral construction is formed by forming a resistor assembly of a resistor helix extending between cylindrical terminals and overlapping the same, inserting the assembly in a sheath tube, filling the tube with MgO powder, placing lamin... | 09/21/1976 |
| 3934333 | Method of constructing bilateral heater unit A heater unit of bilateral construction is formed by forming a resistor assembly of a resistor helix extending between cylindrical terminals and overlapping the same, inserting the assembly in a sheath tube, filling the tube with MgO powder, placing lamin... | 01/27/1976 |
