Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4546353 | Asymmetric thrust warning system for dual engine aircraft An asymmetric thrust warning system for an aircraft having two gas turbine engines. The compressor discharge pressures of the two engines are compared to determine the engine providing the lower thrust and to provide a signal indicative of the actual diff... | 10/08/1985 |
| 4538229 | System for preparing aircraft driftdown plans A computerized system for examining single engine performance capabilities and developing alternate routes/routings for two-engine aircraft in compliance with FAR 121.19 (driftdown, one engine inoperative) such that an attendant loss of altitude will not ... | 08/27/1985 |
| 4528564 | Warning device for helicopters A warning device, for a helicopter with a tail rotor and a mechanical protection device (15) therefor, for giving warning if the helicopter tail approaches too closely the ground or an obstruction. The warning device comprises a height-finder (11) with a ... | 07/09/1985 |
| 4507657 | Apparatus for determining various operational conditions of an aircraft An apparatus for determining various operational conditions of an aircraft such as acceleration, deceleration, angle of attack and wind shear.... | 03/26/1985 |
| 4464661 | System monitor circuit having first and second phase-sensitive demodulator circuits coupled to first and second loads, and a comparator section for monitoring the loads A pair of simple phase-sensitive full-wave high-gain demodulator circuits generate an output for both halves of an AC reference cycle. One of the demodulator circuits is utilized as an amplifier to drive, for example, the steering system servo valve in an... | 08/07/1984 |
| 4463355 | Solid state mach/air speed indicator A liquid crystal display (LCD) system and technique is disclosed which enables an improved visual presentation and display of the rate of change of an aircraft parameter in an avionics system. The rate of change of the parameter is computed and its magnit... | 07/31/1984 |
| 4433323 | Ground proximity warning system with time and altitude based mode switching To increase the effectivity of warnings and to decrease nuisance warnings in a ground proximity warning system having several modes of operation, the switching from one mode to another is done as a function of radio altitude and time. In addition, in a gr... | 02/21/1984 |
| 4394777 | Method of and system for classifying emergency locating transmitters and emergency positions indicating radio beacons During a distress call, a distress location transmitter 10 generates a high frequency carrier signal 40 that is modulated by a predetermined distress waveform characteristic 29. The classification of user associated with the distress call is identified by... | 07/19/1983 |
| 4312041 | Flight performance data computer system A flight performance data system comprises a control and display unit operably connected to a computer. The computer has input means responsive to real air mass parameters and real aircraft dynamic measurements. The computer is programmed to respond to th... | 01/19/1982 |
| 4302745 | Aircraft load factor overload warning system An overload warning system for fighter type aircraft combines analytical techniques of computing structural loads with flight conditions and aircraft control inputs to calculate the allowable load factor/control input on a real time basis. The flight cond... | 11/24/1981 |
| 4167002 | Low fuel indicating device A device for detecting and indicating pending exhaustion of the fuel supply for an airplane or the like. The device preferably is connected between the fuel supply and the fuel pump of the airplane, and comprises a fuel reservoir bowl, a fuel inlet, a fue... | 09/04/1979 |
| 4109886 | Semi-automatic flight control system utilizing limited authority stabilization system A flight control system utilizing a limited authority stability augmentation system having a long term attitude and/or path control input to enhance the automatic flight capability of the stability augmentation system. A position sensor coupled with the l... | 08/29/1978 |
| 4103544 | Turbine engine surge detector A pair of pressure sensors having their openings in diametrically opposed positions are mounted in and substantially parallel to the flow stream in a turbine type power plant for obtaining a differential pressure signal indicative of an incipient surge co... | 08/01/1978 |
