Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 5611944 | Hollow component manufacture In a method of manufacturing a hollow component metallic sheets are diffusion bonded together except where a stop off pattern is applied to the surfaces of the sheets. A gas channel is accommodated in the thickness of the sheets for the entry of pressuris... | 03/18/1997 |
| 5516258 | Ducted fan gas turbine engine nacelle assembly A ducted fan gas turbine engine nacelle assembly comprises an aerodynamic nacelle within which is enclosed a ducted fan gas turbine engine. The nacelle includes an annular containment structure which surrounds the engine fan and fan casing to contain any ... | 05/14/1996 |
| 5507621 | Cooling air cooled gas turbine aerofoil A gas turbine engine is provided with turbine stators which have hollow aerofoils. The aerofoils are internally cooled by a flow of air the path of which is defined by walls. The wall has a curved deflector at its outer end which causes air to flow over t... | 04/16/1996 |
| 5495715 | Engine fuel metering system The amount of fuel supplied by a low pressure pump and a high pressure pump to combustion means is controlled by a control unit. If most of the fuel delivered by the pumps is required by the engine a clutch engages to provide a direct mechanical drive bet... | 03/05/1996 |
| 5465785 | Heat exchanger A plate-fin type of heat exchanger facilitates exchange of heat between two process streams such as high pressure methane and seawater and includes a matrix of heat exchange plate elements arranged side-by-side, flow passages for the seawater process stre... | 11/14/1995 |
| 5463863 | Fuel control system A fuel control system for a gas turbine aero engine comprises a first metering valve 22 which is controlled by a feed back loop 43 in flow series with a manually operated metering valve 34. A pressure drop regulator 31, 39 regulates the pressure drop acro... | 11/07/1995 |
| 5458857 | Combined reformer and shift reactor A combined reformer and shift reactor comprises a cylindrical reforming chamber arranged within and on the axis of a cylindrical vessel. An annular steam generator is arranged within, and coaxially with, the vessel. The steam generator is arranged around ... | 10/17/1995 |
| 5438823 | Heat exchange apparatus for gas turbine fluids A gas turbine engine heat exchange apparatus comprises a first heat exchanger (12), which is arranged to receive oil from a lubricating oil system of the engine and put the oil in heat exchange with either a cooling or heating medium (17, 21), and a secon... | 08/08/1995 |
| 5439351 | Heat pipes A heat pipe, which may for instance be in the form of an aerofoil blade for a gas turbine engine, is provided with capillary means which is in two different forms. One form is constituted by a porous material and the other constituted by grooves formed in... | 08/08/1995 |
| 5363555 | Method of manufacturing an article by superplastic forming and diffusion bonding A plurality of titanium sheets are assembled into a stack. At least one of the sheets is provided with a stop off material on one of its surfaces to prevent diffusion bonding at predetermined positions. The edges of the sheets are welded together and a pi... | 11/15/1994 |
| 5350002 | Assembly and method for making a pattern of a hollow component An assembly for making a wax pattern of a hollow component includes a pattern die and a noncircular core which is located within the pattern die. The pattern die is a split die and includes two halves which have shaped internal surfaces to define the exte... | 09/27/1994 |
| 5085037 | Minimizing the effects of icing in the intakes of aerospace propulsors An air intake suitable for an aerospace propulsor comprises a duct in which are provided two pirmary heat exchangers arranged in parallel relationship and a secondary heat exchanger downstream of the primary heat exchangers. The primary and secondary heat... | 02/04/1992 |
| 5044879 | Variable stator vane arrangement for an axial flow compressor A variable stator vane arrangement for an axial flow compressor comprises a plurality of stages of variable pitch stator vanes each of which is operated by a respective control ring. The vanes in each stage are connected to the control rings by operating ... | 09/03/1991 |
| 4823547 | Thrust reverser Gas turbine engines, usually of the kind which include ducted fans, have cowl structures which generate drag inter alia by virtue of their frontal area. Where the cowl is of very large diameter i.e. in the order of 3 to 4 meters, if known devices such as ... | 04/25/1989 |
