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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 6910614 | Vacuum compression brazing furnace and method of using same A vacuum heat treating furnace for brazing a large metallic part is disclosed. The vacuum furnace includes a pressure vessel having a cylindrical wall and a door dimensioned and positioned for closing an end of the cylindrical wall. A workpiece handling system is mo... | 06/28/2005 |
| 6133551 | Kiln A gas or electrically heated kiln furnace in which the hearth is stationary and an outer shell or wall with a door for access rotates around a stationary hearth. Loading and unloading is accomplished by rotating the outer shell to align the door with a po... | 10/17/2000 |
| 6036485 | Annealing furnace The method and apparatus is directed toward an annealing furnace and a method of using the same where the annealing furnaces includes a layer forming apparatus suitable to create layers of metal product; an insulated housing having an interior cavity form... | 03/14/2000 |
| 5800161 | Heating and/or temperature-maintaining furnace for slabs Heating and/or temperature-maintaining furnace (11) for slabs (35), which includes lateral intake (12a) and outlet (12b) roller conveyors the axis of which is at a right angle to the axis of movement of the slabs (35) within the furnace (11), the roller c... | 09/01/1998 |
| 5507639 | Heat treatment apparatus and method thereof Nozzles that blow an air are disposed in a space between an outer wall of a process tube and a heat generating resistor. The openings of the nozzles are oriented to the process tube corresponding to an arrangement area of semiconductor wafers. An air blow... | 04/16/1996 |
| 5391034 | Furnace with refractory longitudianl members and with central charging for heating and storing hot products Furnace with refractory longitudinal members and with central charging for heating and storing hot products, whereby the central charge arrives from a continuous casting plant or from previous hot processes, the furnace (10) comprising a first furnace por... | 02/21/1995 |
| 5184953 | Water cooling pipe correction to vertically unsymmetrical heating of blooms in walking-beam reheat furnace Apparatus is provided for decreasing temperature differentials within rectangular metal blooms being heated in a furnace. The apparatus includes elongated internally cooled members located above the blooms adjacent an exit end of the furnace. The longitud... | 02/09/1993 |
| 5088921 | Heat treatment furnace An elongated, horizontal tunnel-type furnace for heat treating workpieces carried in succession therethrough. The furnace is of modular construction and comprises a series of contiguous individual modular sections that define a tunnel-type enclosure. Each... | 02/18/1992 |
| 5055036 | Method of loading and unloading wafer boat A wafer boats supporting wafers is loaded into and unloaded from a reaction tube with a lid therebelow in a vertical heat treatment apparatus, while holding the wafer boat vertical with respect to the lid. An arm is provided in a space below the reaction ... | 10/08/1991 |
| 4955808 | Method of heat-processing objects and device and boat for the same A method of heat-processing semiconductor wafers comprising forming a purge tube which encloses the plural wafers by supporting a boat, on which the plural wafers are mounted, by a carrier arm to define a space on the upper side of the wafers while defini... | 09/11/1990 |
| 4863376 | Walking beam furnace A walking beam furnace with a hearth of fixed beams and of walking beams arranged on supports passing through slots in the floor of the furnace in which, so as to avoid heat loss and undesired heating of the supports in the region of the floor slots, cove... | 09/05/1989 |
| 4624637 | Rolling pipe centering apparatus When pipes 8 are rollingly conveyed through a furnace along parallel rails 7, any lateral migrations of the pipes are periodically corrected by movable stops 18 which are extended inwardly in unison to abut the pipe ends and re-center them. The stops are ... | 11/25/1986 |
| 4543059 | Slotted cantilever diffusion tube system and method and apparatus for loading A cantilever tube for carrying loaded wafer boats into a diffusion furnace and confining flow of gas through the wafers includes an elongated slot extending from an open end of the tube to a predetermined region in which the wafer boats are positioned, th... | 09/24/1985 |
| 4518349 | Cantilevered boat-free semiconductor wafer handling system An improved semiconductor wafer handling system completely eliminates the need for boats, sleds, paddles, wheeled carriers, etc., customarily employed in transporting wafers during heat processing through the use of a plurality of rigid, polished cantilev... | 05/21/1985 |
| 4459104 | Cantilever diffusion tube apparatus and method A cantilever diffusion tube apparatus includes a quartz cantilever tube having a support end clamped to a laterally movable carriage mechanism and an outer end portion containing a plurality of spaced semiconductor wafers. The cantilever tube is coaxially... | 07/10/1984 |
| 4212633 | Vacuum electric furnace A vacuum electric furnace is disclosed for operation with a hostile environment therein which may be above the melting temperature of most metals, other than refractory metals, with apparatus in the furnace for advancing the work, the advancing apparatus ... | 07/15/1980 |
| 3942967 | Heat treatment of glass sheets A glass sheet to be heated, for example to a bending or a quenching temperature, is supported on its lower edge in an upright disposition and is advanced along a horizontally disposed path through a furnace. Transient support is provided for the upper edg... | 03/09/1976 |
