Bizarre Patents
A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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 |
| 6745008 | Multi-frequency communication system and method A multi-frequency RFID remote communication system is provided that includes a plurality of RFID tags configured to receive a first signal and to return a second signal, the second signal having a first frequency component and a second frequency component, the secon... | 06/01/2004 |
| 6396434 | Radar transponder Upon receiving a radar electric wave from a search radar, a radar transponder according to the present invention generates a trigger signal in response to the reception of the radar electric wave. In response to only the trigger signal, the radar transpon... | 05/28/2002 |
| 6114984 | Interferometric doppler guidance system A means for identifying a particular range and Doppler shift signal in the field of view of a moving radar antenna which determines azimuth angle to this range-Doppler signal relative to the antenna by determining the phase difference between said signal ... | 09/05/2000 |
| 4599617 | Method and apparatus for evaluating the range data accumulated by distance measuring equipment This invention discloses a DME which employes an improved technique for validating received replies. The technique employed reduces lock-on time by analyzing all of the range data received within a set time period following the transmission of an interrog... | 07/08/1986 |
| 4555704 | Range reply search apparatus Apparatus for searching for range indicating pulse signals received as part of distance measuring equipment which first form a list of distance indications in a first search time. The distance indications obtained in a second search time are then logicall... | 11/26/1985 |
| 4124850 | Video processor for distance measuring equipment A video processor for Distance Measuring Equipment in which all timing functions including fixed delays are performed by digital counters counting clock pulses from a highly stable source. Search and track operations are conducted by starting a memory cou... | 11/07/1978 |
| 4035801 | Multiple ranging DME A method and system for obtaining and displaying distance information to multiple DME ground stations using a single airborne transmitter-receiver and for displaying groundspeed to one of the stations. A DME is time multiplexed between two channels and di... | 07/12/1977 |
| 4028698 | DME apparatus and method A DME apparatus and method for determining the distance of an aircraft from a ground station and the groundspeed thereof. Replies to the transmitting aircraft are distinguishd from replies to other aircraft and squitter by digitally storing information in... | 06/07/1977 |
| 3983557 | Digital DME with compensation for ground station intermittencies Each bin of a one-thousand stage shift register represents a two-tenth mile aircraft to ground station interval, and the register is shifted a full cycle corresponding to a two-hundred mile spacing. During a first shifting epic, all pulses returned from t... | 09/28/1976 |
| 3975731 | Airborne positioning system An airborne positioning system for acquiring range information from at least three distance measuring equipment (DME) stations, including a computer controlled range gate and means for estimating and removing bias errors from range measurements and smooth... | 08/17/1976 |
| 3936823 | Fast search and lock-on means for distance measuring equipment A fast search system for DME generates range gates at the time an analog sweep voltage rises to the magnitude of an analog integrator waveform, the latter having a slope less than that of the sweep voltage and provided with a constant current source input... | 02/03/1976 |
