Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 6606932 | Method and apparatus for neutralization of mines and obstacles The invention provides a method and apparatus for neutralizing mines and obstacles that can quickly and efficiently clear a specified surf zone without human intervention. In a preferred embodiment, the invention utilizes firing tubes including a combusti... | 08/19/2003 |
| 6529769 | Apparatus for performing hyperspectral endoscopy A hyperspectral imaging endoscopy apparatus is provided that utilizes spectral technology to acquire, process and exploit gastroscopic data. The apparatus allows for real time anomaly detection and identification. The apparatus includes an endoscope, a sp... | 03/04/2003 |
| 6472950 | Broadband coupled-line power combiner/divider A broadband coupled-line N-way power combiner is presented for combining N RF signals into a common load. This combiner includes Nࣙ2 input ports, a common output port, and N identical at least two-conductor coupled transmission lines, and N isolating re... | 10/29/2002 |
| 6363853 | Electrically initiated distributed igniter An electrically initiated distributed igniter (EIDI) system combines most of the advantages of conventional pyrotechnic igniters with those of ETC planar igniters without the disadvantages of either. The EIDI system lends itself to precise timing control ... | 04/02/2002 |
| 6324956 | Method and apparatus for neutralization of mines and obstacles The invention provides a method and apparatus for neutralizing mines and obstacles that can quickly and efficiently clear a specified surf zone without human intervention. In a preferred embodiment, the invention utilizes firing tubes including a combusti... | 12/04/2001 |
| 5953119 | Optical shutter assembly for trace element detector A shutter assembly for a trace element detector includes a shutter wheel having at least one window, and a drive mechanism coupled to the shutter wheel, wherein the drive mechanism rotates the shutter wheel to move the window between at least an outlet po... | 09/14/1999 |
| 5808349 | Magnetized photoconductive semiconductor switch A strong magnetic field is applied to a photoconductive semiconductor switch to make the opening time of the switch independent of the recombination time of the photoionized semiconductor. As a result, the switch is capable of shaping current pulses with ... | 09/15/1998 |
| 5796372 | Folded cross grid dipole antenna A folded crossed grid dipole antenna element includes one or more partially or fully conductive areas in the antenna element. The conductive areas are defined by a group of conductors of the antenna element. In a further configuration, upper and lower tie... | 08/18/1998 |
| 5293176 | Folded cross grid dipole antenna element A wide bandwidth, wide scan, antenna array element provides an active element impedance close to 350 ohms over a bandwidth approaching one octave in a periodic equilateral triangular array lattice. The two balanced feed inputs to each element may be phase... | 03/08/1994 |
| 5218374 | Power beaming system with printer circuit radiating elements having resonating cavities A system and method for "power beaming" energy from a source at high frequencies and rectifying such energy to provide a source of DC energy is disclosed. The system operates at a frequency of at least 10 GHz and incorporates a rectenna array having a plu... | 06/08/1993 |
| 5202689 | Lightweight focusing reflector for space An adjustable focal length reflector for operation in space includes a membrane having a reflective surface. The membrane is subjected to incident radiation pressure. An assembly is located at the perimeter of the membrane to exert force on the membrane t... | 04/13/1993 |
| 5068669 | Power beaming system A system and method for power beaming energy from a source at high frequencies and rectifying such energy to provide a source of DC energy is disclosed. The system operates at a frequency of at least 10 GHz and incorporates a rectenna array having a plura... | 11/26/1991 |
| 5041834 | Artificial ionospheric mirror composed of a plasma layer which can be tilted This invention relates to generation of a Artificial Ionospheric Mirror (AIM), or a plasma layer in the atmosphere. The AIM is used like the ionosphere to reflect RF energy over great distances. A tiltable AIM is created by a heater antenna controlled in ... | 08/20/1991 |
| 5038664 | Method for producing a shell of relativistic particles at an altitude above the earths surface A method for establishing a region of a high density, high energy plasma at an altitude of at least about 1500 kilometers above the earth's surface. Circularly polarized electromagnetic radiation is transmitted at a first frequency substantially parallel ... | 08/13/1991 |
| 4999637 | Creation of artificial ionization clouds above the earth A method for forming a cloud of artificial ionization above the earth by initially heating the resident plasma at a desired altitude with electromagnetic radiation having a frequency approximately the same as that of the ambient plasma. As the plasma freq... | 03/12/1991 |
