Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Murphy; Richard D.
Address:
Trumbull, CT
No. of patents:
9
Patents:












Patent Number Title Of Patent Date Issued
4890284 Backup control system (BUCS) December 26, 1989
A backup software program is installed in an isolated portion in the memory of at least one of redundant computers. The backup program performs basically the same functions as the prime program but is dissimilarly programmed to prevent a common software error. Switchover to the backup
4741501 Preventing augmenting vertical load induced oscillations in a helicopter May 3, 1988
Collective stick inputs are provided (18) to a high pass filter (24) when collective stick reversals in excess of a threshold collective authority rate (15%/sec) and in excess of a threshold frequency (3 stick reversals per second) are sensed. The output of the high pass filter (24) is s
4580223 Incorporation of pitch bias actuator function into an existing AFCS April 1, 1986
An aircraft automatic flight control system (AFCS) includes a pair of fast, limited authority inner loop actuators responsive to signals indicative of aircraft attitude or other flight parameters such as airspeed, the inner loop being recentered by an outer loop actuator responsive to at
4566101 Oscillatory failure monitor January 21, 1986
An oscillatory-failure monitor (101) compares a parameter of a plurality of signals (A, B) within a tolerance (TOL) to determine agreement or disparity among the signals. Each discrete miscompare occurrence (i.e., singular disparity following full agreement) is counted by incrementing
4564908 Automatic limiting of helicopter engine torque January 14, 1986
A torque limiting altitude hold system for a helicopter engages torque limiting (56, 203) when excessive torque is anticipated (138, 202) as determined by the summation of present torque and torque rate times a reference value (126, 194) exceeds maximum torque with torque limiting en
4563743 Maneuver-force gradient system January 7, 1986
A maneuver force gradient system causes a helicopter, that otherwise tends to pitch up in a banked turn, to pitch nose-down. A command signal (25) is provided as a function of the roll angle to operate the longitudinal trim actuator (27) which automatically moves the cyclic control (50)
4500967 Aircraft short-term roll attitude retention system February 19, 1985
An automatic flight control system, for an aircraft having a roll attitude retention outer loop actuator (29), a roll stability inner loop actuator (25) and a control stick (26) for positioning control surfaces of the aircraft to control its roll attitude, includes means (54, 55) to prov
4382283 Helicopter attitude and airspeed acquisition and retention system May 3, 1983
A helicopter pitch axis autopilot system, including airspeed hold at cruise speeds and pitch attitude hold below cruise speeds, includes integrated longitudinal acceleration drift corrected by heavily filtered Pitot static airspeed as a filtered airspeed reference, use of a beeper to nud
4337516 Sensor fault detection by activity monitoring June 29, 1982
Faults in a sensor (10) are detected by excess rate fault determination by taking the differentiated (58, 107), rate limited (60, 100, 111) integral (64, 112) from the raw sensor output (72, 113) and indicating a fault (15, 117) in the event that the difference exceeds a predetermined ma










 
 
  Recently Added Patents
Compounds and their salts specific to the PPAR receptors and the EGF receptors and their use in the medical field
Intraoral camera for dental chairs
Probe for ultrasound diagnostic apparatus
Circuit for and method of enabling communication of cryptographic data
Method and apparatus for controlling the use of data stored on a media sample
Data transfer device and data transfer method
Web-based royalty system and user interface
  Randomly Featured Patents
Method of sealing a flat-type fluorescent lamp device and process for coating fluorescent layers on corresponding first and second substrates
Printer having scroll print buffer and printing method
Time based access provisioning system and process
Display method and apparatus for camera
Separator grease retention and feed system for wheel spindle bearings
Controlling flip-chip techniques for concurrent ball bonds in semiconductor devices
Camera and method for use with camera
Benzimidazoles that are useful in treating sexual dysfunction
Method and apparatus for reference symbol aided channel estimation
Method of closing discontinuity in tissue