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A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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| Number | Title | Issue Date |
| 4844380 | Detachable thrust vector mechanism for an aeronautical vehicle A relatively inexpensive, high efficiency, detachable thrust vector mechanism is provided for addressing the current shortcomings in the art. In the illustrative embodiment, the invention is used in conjunction with a nautical or aeronautical vehicle havi... | 07/04/1989 |
| 4838021 | Electrostatic ion thruster with improved thrust modulation An ion propulsion system is disclosed. The invention includes a ionizing system for ionizing a gaseous propellant within a chamber to produce a plasma. The ionizing system includes a cathode 14 to provide a source of electrons and anodes 11 and 13 to acce... | 06/13/1989 |
| 4839328 | Catalyst material and a process for its preparation A catalyst material having a catalyst metal supported on a substrate, wherein the substrate has at least two types of surface atomic sites at which the catalyst metal can reside, and the catalyst metal resides primarily in one of those types of sites. In ... | 06/13/1989 |
| 4837431 | Variable phase time delay and signal aggregation system and method for achieving constant spatial resolution in scanning detection instruments A variable phase time delay and signal aggregation ssystem is disclosed. The invention is adapted for use in scanning detection system and serves to maintain spatial resolution on a target surface independent of scan angle. The invention includes means fo... | 06/06/1989 |
| 4833319 | Carrier gas cluster source for thermally conditioned clusters A source of clusters of atoms is provided, wherein the clusters are thermally conditioned after their formation so that the clusters are in the liquid state. A beam of clusters is first formed during the mixing of a stream of atoms and a carrier gas. The ... | 05/23/1989 |
| 4833333 | Solid state laser Q-switch having radial color center distribution A passive laser Q-switch is fabricated from a crystal which can form saturable color centers, such as lithium fluoride. The arbitrarily long crystal is irradiated with electrons from the side, or radially, to impart a radial distribution of saturable colo... | 05/23/1989 |
| 4830980 | Making complementary integrated p-MODFET and n-MODFET An integrated circuit device consisting of an n-channel selectively doped heterojunction transistor (SDHT) and a p-channel SDHT, in the form of complementary MODFETs fabricated on the same wafer, is disclosed. A method for easily fabricating the complemen... | 05/16/1989 |
| 4828938 | Method for depositing materials containing tellurium and product A method for chemical vapor deposition of materials containing tellurium, such as cadmium telluride and mercury cadmium telluride, wherein the reactant source of the tellurium is a tellurophene or methyltellurol. These reactant sources have high vapor pre... | 05/09/1989 |
| 4824245 | Response ratioing angle of arrival sensor that is responsive to scintillation An improved apparatus is disclosed for reliably and unambiguously sensing the angle of arrival of an electromagnetic radiation beam by a remote source. A sensor assembly 2 receives, through an optical window 22, the incident beam which is directed toward ... | 04/25/1989 |
| 4822121 | Angular scan drive system having means for selectively extending the range thereof An angular scan drive system is disclosed which permits the range of motion of a scanning mechanism to be selectively extended. The invention includes a mass (typically the scanning assembly) which is pivotally attached to a frame to scan in an oscillator... | 04/18/1989 |
| 4820923 | Uncooled reflective shield for cryogenically-cooled radiation detectors A warmshield reflector for a cryogenically cooled radiation detector has a reflective surface of toroidal shape. The surface has geometric properties which cause a ray emanating from the detector to be reflected such that a ray is imaged as a defocused ri... | 04/11/1989 |
| 4821044 | Waveguide slot array termination and antenna system A termination (20, 32) is placed in the opposing wall behind the center radiator (18c, 28c) of a multiple slot antenna array. The termination is inoperative when the array is excited for sum mode radiation patterns and is operative when the array is excit... | 04/11/1989 |
| 4816893 | Low leakage CMOS/insulator substrate devices and method of forming the same A method of fabricating CMOS circuit devices on an insulator substrate is disclosed in which a solid phase epitaxy process is applied to islands for the individual devices in the same step as the channel dopant implants. An ion species, preferably silicon... | 03/28/1989 |
| 4812639 | Self-aligning phase conjugate laser A method and apparatus are disclosed for providing a laser beam that is automatically aligned with a substantially rigid, stabilized platform or frame that can be oriented over a wide angular range, such as by the gimbals of a laser pointing and tracking ... | 03/14/1989 |
| 4812072 | Torsion structural pivot A structural pivot 10 includes a first end cap 18 and a second end cap 20 which are connected together by an elastic member 22 in the form of a cruciform. The structural pivot 10 does not exhibit a geometric center shift when one of the end caps is angula... | 03/14/1989 |
| 4810088 | Laser rangefinder and thermal imager with enhanced scanning mirror control An improved laser rangefinder and thermal imager with enhanced scanning mirror control is disclosed. Optical axes (11,12) are aligned parallel to each other. The system includes only one common thermal image/laser reception channel (8,9,10,11). The angula... | 03/07/1989 |
| 4804832 | Two directional angle of arrival system A compact and efficient two direction of arrival system which is responsive over a large incident solid angle. The system is operative to use relatively few detectors, simple and inexpensive optics in a small assembly, and a very wide field coverage.... | 02/14/1989 |
| 4803644 | Alignment mark detector for electron beam lithography A hardware system is disclosed for detecting alignment marks on a substrate in connection with electron beam lithography. The system is considerably faster than prior software approaches. A scanning signal derived from backscattered electrons as the beam ... | 02/07/1989 |
| 4802784 | Bi-flex pivot A structural pivot 10 includes a first sleeve 18 and a second sleeve 20 which are connected together by a pair of flexures 22 and 24. Each flexure includes a pair of blades 40, 42 and 54, 56. The free ends of the blades are connected to the sleeves 18, 20... | 02/07/1989 |
| 4794247 | Read-out amplifier for photovoltaic detector A read-out amplifier (200) for a photovoltaic detector (201) employs an integrating amplifier (203) with capacitor feedback (230 ) during a self-calibrating active load (205, 240) to minimize debiasing of the photovoltaic detector during its operation. Th... | 12/27/1988 |
| 4788423 | Two-mirror scanning system An optical scanning system (10) is disclosed for scanning a wide incoming field of view of at least 60 degrees. The system (10) incorporates two flat mirrors (12,26) which rotate about two axes (20,28). The motion of the two mirrors is synchronized. The r... | 11/29/1988 |
| 4788439 | Multiple detector fog suppression and edge enhancement A proximity sensing system and signal processing method are disclosed for detecting target objects from a movable vehicle while protecting against false target detection due to the presence of fog, clouds, or other aerosols. One or more target detectors a... | 11/29/1988 |
| 4786809 | Low noise preamplification stage A preamplifier circuit provides a low noise, low power buffer preamplification stage for interfacing low output impedance, low noise sensors to a readout circuit at cryogenic temperatures. The preamplifier circuit may be formed of discrete components, or ... | 11/22/1988 |
| 4787013 | Intermediate range intensity modification of gaussian beam using optical integration means An optical projection apparatus is disclosed for generating a planar light beam of substantially uniform intensity from a nonplanar multi-element light source 10 projecting a beam having a generally Gaussian intensity distribution. Light from the source 1... | 11/22/1988 |
| 4785174 | Interferometric thermal detector An interferometric sensor (10) employs a sensing optical fiber (12) and a reference optical fiber (14). The sensing fiber (12) has a coating 16 thereon responsive to radiated thermal energy while the reference fiber is shielded therefrom. Both the sensing... | 11/15/1988 |
| 4785292 | Dual spectrum frequency responding fire sensor Apparatus for sensing the ex(i)stence of a fire and providing a warning, if desired, with improved discrimination against the possibility of false alarms. Dual channel detectors are used, one detector being set to respond to incident radiation having a wa... | 11/15/1988 |
| 4783592 | Real time adaptive round discrimination fire sensor A fire detection system discriminates between a HEAT round that does not initiate a secondary fire and a HEAT round which does initiate a secondary fire. The system of the invention measures the peck intensity of a penetrating HEAT round in order to deter... | 11/08/1988 |
| 4783594 | Reticular detector array A detector assembly for reception of infrared radiation is formed as a composite structure of a detector array electrically connected by a set of contacts to a readout clip disposed on a backside of the assembly opposite a front side receiving incident ra... | 11/08/1988 |
| 4782028 | Process methodology for two-sided fabrication of devices on thinned silicon A method is disclosed for forming a detector device, such as a thinned bulk silicon blocked impurity transducer infrared detector, by thinning a semiconductor substrate (10) and processing the thinned region (30) on two sides to form the detector device. ... | 11/01/1988 |
| 4776102 | Tool for measuring the height of a material buildup on a reference plane A tool (10) is used for detecting whether material (14) on a reference surface (12) has exceeded a predetermined height. The tool (10) includes a housing (32) having a bottom surface with at least one opening (34) therein for receiving the material (14) w... | 10/11/1988 |
| 4775818 | Liquid metal ion source and alloy A liquid metal ion source and alloy, wherein the species to be emitted from the ion source is contained in a congruently vaporizing alloy. In one embodiment, the liquid metal ion source acts as a source of arsenic, and in a source alloy the arsenic is com... | 10/04/1988 |
| 4772846 | Wafer alignment and positioning apparatus for chip testing by voltage contrast electron microscopy An apparatus for use in testing IC chips on a semiconductor wafer is disclosed that allows the wafer and an electrical probe to be independently positioned and then clamped together and moved as a single unit when they are in alignment. This permits a chi... | 09/20/1988 |
| 4769290 | High efficiency reflectors and methods for making them An article of manufacture includes a substrate carrying at least two coating layers, one layer being of approximately quarter wave optical thickness, the other layer of approximately two quarter wave optical thickness, with the layers alternating between ... | 09/06/1988 |
| 4769775 | Microprocessor-controlled fire sensor A fire sensor can perform a sophisticated analysis of the outputs of radiant energy detectors, while minimizing size, weight, and cost, by employing a microprocessor to analyze the detector outputs. In a preferred embodiment, an Intel 2920 Signal Processo... | 09/06/1988 |
| 4769531 | Direction finder system with inclined detectors A direction finding system for infrared radiation includes a set of four detectors uniformly positioned about the Z axis of a cartesian coordinate system with individual ones of the detectors having radiation detection surfaces facing the Z axis and being... | 09/06/1988 |
| 4766516 | Method and apparatus for securing integrated circuits from unauthorized copying and use A security system and method for IC circuits has at least one additional circuit element that does not contribute toward the IC's circuit function, but inhibits proper functioning of the IC in case of an attempted copying or other unauthorized use. The id... | 08/23/1988 |
| 4757208 | Masked ion beam lithography system and method A masked ion beam lithography (MIBL) system and method is disclosed which is considerably more compact and economical than prior ion implantation devices. An H+ ion beam is extracted from a source in the form of an angularly expanding beam, and... | 07/12/1988 |
| 4757432 | Series resonant inverter with integrating feedback control loop Current flow in a transistorized series resonant inverter is switched in an inherently simple and stable manner by time integrating the difference between the electrical output and a reference and varying the switching frequency of the inverter so as to n... | 07/12/1988 |
| 4756901 | Purification of (Nb1-x Tax)2 O5 (Nb1-x Tax)2 O5 ("NTO") is purified of undesirable impurity elements present in small amounts by contacting the NTO in finely divided form to an extraction phase containing chloride, bromide, or iodide ions at a... | 07/12/1988 |
| 4750979 | Process for etching lithium niobate based devices without damaging optical waveguides The present invention provides a method of preparing the surface of a lithium niobate substrate (10) having titanium optical waveguides (12) for a subsequent deposition of a coating material such as electrodes. This cleaning or etching step prior to the d... | 06/14/1988 |
