Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 6332410 | Grate for incineration plants The invention relates to a grate for incineration plants for the incineration of combustible material, in particular refuse, comprising at least one grate track, which is composed of fixed and movable grate-lining rows, which are arranged alternately in t... | 12/25/2001 |
| 5722333 | Incinerator furnace with fire grate and air supply This invention provides a variety of incineration furnace with modular fire grate apparatus for cylindrical incinerator furnaces of water jacket configuration. The invented fire grate module is provided with refuse dump agitation capability from underside... | 03/03/1998 |
| 5322434 | Cooler grate In this cooler grate according to the invention the supporting surfaces of the grate plates fixed on grate plate supports are provided with cooling gas openings which open upwards and are constructed in the form of substantially endless annular gaps, so t... | 06/21/1994 |
| 5149266 | Method and apparatus for cooling hot material The invention relates to the cooling of hot, layered, granular material supported on an air permeable grate through which cooling air passes constantly. Some zones of the material layer have a higher temperature than other zones. Pulses of additional cool... | 09/22/1992 |
| 4787322 | Pellet feed system A stoker assembly for a solid particulate burning stove that includes a fuel directing flange for directing the fuel to an upper combustion plate and ventilation tubes to prevent the ignition and combustion of fuel stored in remote bins. The fuel directin... | 11/29/1988 |
| 4779544 | Solid fuel combustion assembly A solid fuel combustion assembly for use with pellet fuel and having a hopper; an auger within an auger tube for receiving fuel from the hopper and conveying it to a burnpot; a burnpot having a tubular fuel conduit fed by the auger at one end and terminat... | 10/25/1988 |
| 4708069 | Solid fuel heating appliance A heating appliance which burns solid fuel has a bottom feed to a furnace vessel, conveniently by means of an auger. The furnace vessel is arranged to be driven in rotation which assists keeping a uniformly distributed fire in the furnace vessel, and make... | 11/24/1987 |
| 4667606 | Device at incinerator The invention relates to a feed-in device for fuel in a fire-place with plane grate (5). The feed-in occurs through an opening (60) in the grate and comprises a tubular straight passageway (34), which extends upward from below to the opening (60), so that... | 05/26/1987 |
| 4633790 | Combustion chamber apparatus and method An apparatus and method for burning fuel in a combustion chamber having an exhaust port. The invention includes a combustion device having a burner head for burning fuel to produce a volitilization zone of high heat. The burner head is positioned in the c... | 01/06/1987 |
| 4627365 | Mobile garbage incinerator A mobile garbage incinerator having an incinerator body unit. The incinerator body unit includes a hanging drum for lifting and dumping garbage into a collecting tank. Garbage is then moved into a main incinerating room for a first stage incineration proc... | 12/09/1986 |
| 4621583 | System for controlling a bark-fired boiler A system and process for controlling a boiler is disclosed. The system includes a television camera mounted above the reciprocable grate of the boiler to locate craters in solid fuel on the grate and an actuator to vary an operating parameter of the furna... | 11/11/1986 |
| 4574712 | Wood chip burning stoker type furnace A fuel feed system for feeding particulate combustible material to a stove, a heater, furnace or the like, referred to herein as heating equipment, and the same in combination with such feed system wherein the combustible material is wood, preferably wood... | 03/11/1986 |
| 4548194 | Fuel stoker and furnace A furnace having a primary heat exchange unit also providing a combustion chamber, a secondary heat exchange unit connected by an upper crossover conduit to the primary heat exchange unit, and a tertiary heat exchange unit connected by a lower V-shaped cr... | 10/22/1985 |
| 4520740 | Combustion and heating equipment Combustion and heating equipment includes a body with an underfeed stoker located in the lower part thereof. A jacket surrounds the body to define a heating space, different parts of which are interconnected by triangular ducts disposed in the gas pass. A... | 06/04/1985 |
| 4454860 | Fuel stoker and furnace A furnace having a primary heat exchange unit also providing a combustion chamber, a secondary heat exchange unit connected by an upper crossover conduit to the primary heat exchange unit, and a tertiary heat exchange unit connected by a lower V-shaped cr... | 06/19/1984 |
| 4449462 | Coal burning apparatus A coal burning apparatus actuated by a stoker of the underfeed type includes a burner body formed of a plurality of vertically stacked rings with spaces between the rings extending horizontally to form a tuyere. A tuyere is easily made by stacking rings o... | 05/22/1984 |
| 4441436 | Solid fuel burning methods and apparatus Methods and apparatus for burning fuel from a supply of solid fuel positioned at one side of a grating light a layer of the solid fuel at the grating to discharge combustible gas. Such discharged gas is drawn through the grating to a side of the grating o... | 04/10/1984 |
| 4430948 | Fuel stoker and furnace A furnace having a primary heat exchange unit also providing a combustion chamber, a secondary heat exchange unit connected by an upper crossover conduit to the primary heat exchange unit, and a tertiary heat exchange unit connected by a lower V-shaped cr... | 02/14/1984 |
| 4426937 | Heat exchanger furnace A heat exchanger furnace includes a firebox, a heat exchanger housing in communication with the firebox for receiving combustion gases therefrom, and a plenum housing surrounding the heat exchanger housing so as to define a plenum chamber therebetween. A ... | 01/24/1984 |
| 4388876 | Ash removal system An ash removal apparatus for a burner which produces ash moved through a discharge passage in the floor of the burner, including a circumferential ash-removing opening surrounding the grate of the burner, with the surfaces forming the opening being circum... | 06/21/1983 |
| 4384534 | Ash removal system and heating mechanism for wood waste burners Wood waste fuel is piled on a perforated grate within a combustion chamber. The fuel is burned by underfire air passing through the grate up through the pile. Ash forms at the bottom of the pile and is removed about a complete 360 degree perimeter where i... | 05/24/1983 |
| 4331126 | Furnace for solid fuels A solid fuel furnace includes a combustion chamber and an elongated grate trough extending below the combustion chamber for charging the solid fuel into the chamber. A tube extends within the grate trough so that the axis of the tube is parallel to that o... | 05/25/1982 |
| 4319557 | Heat exchanger furnace A heat exchanger furnace includes a firebox, a heat exchanger housing in communication with the firebox for receiving combustion gases therefrom, and a plenum housing surrounding the heat exchanger housing so as to define a plenum chamber therebetween. A ... | 03/16/1982 |
| 4314541 | Grate bar for grate linings, especially in furnaces A grate bar for a furnace grate lining is disclosed. The grate exhibits lateral contact surfaces and external ribs on its lower side in the vicinity of the contact surfaces. At least one jet-like air channel is in part formed by a recess in at least one l... | 02/09/1982 |
| 4309193 | Apparatus for input and distribution of gasification medium in a rotary grid generator The invention discloses an apparatus for maximizing the uniformity of distribution of gasification medium in a rotary grid generator. To insure proper input, a distribution head is rotatably mounted within the interior of the rotary grid, and the distribu... | 01/05/1982 |
| 4007697 | Stoker actuated coal burning apparatus The apparatus includes a feed box with a horizontal intake port for connection to a stoker feed and a vertical discharge port for transmitting coal to the burning zone, with a curved passage between the ports. An annular burner body has a central annular ... | 02/15/1977 |