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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 5303305 | Solar powered hearing aid A hearing aid employs a permanent built-in rechargeable storage cell or battery, and a solar cell or other photo cell which powers the electronics of the hearing aid and recharges the storage cell. Favorably, a thin film amorphous silicon cell is employed... | 04/12/1994 |
| 4743011 | Exercise rowing machine An exercise rowing machine uses a flywheel as a resistance member and has cam sector arms which are pivoted to rotate with the machine's oars. A bicycle-type chain is pulled to drive a sprocket drive on the flywheel when the oars are stroked. The arcuate ... | 05/10/1988 |
| 4739258 | Dynamic testing of thin-film conductor The reliability and life cycle of a thin-film conductor is predicted accurately and directly by measuring changes in its resistivity during an interval in which its temperature is dynamically increased. A semiconductor wafer containing a number of integra... | 04/19/1988 |
| 4737406 | Flame retardant treatment A flame retardant or fire retardant preparation can be employed with fibrous material containing either cellulosic fibers, non-absorbent fibers, or blends thereof. The preparation is formed of an aqueous solution of ammonium sulfate, a metasilicate salt s... | 04/12/1988 |
| 4737418 | Nickel clad corrosion resistant lid for semiconductor package A lid for closing an electronics package exhibits a high corrosion resistance. The lid is formed of a metal substrate which is clad with rolled or worked nickel, and covered with a layer of gold or precious metal electroplate. At edges of the lid, which a... | 04/12/1988 |
| 4736317 | Microprogram-coupled multiple-microprocessor module with 32-bit byte width formed of 8-bit byte width microprocessors A microprogram-coupled multiple-microprocessor module receives a system command system status and associated data. The system command and the system status can be directly used as an address or mapped into a microprogram memory address to initiate micro-s... | 04/05/1988 |
| 4735029 | Roof system truss pin A roof system comprises roof support members, such as rafters and purlins, to which truss members are connected. These members are formed as sheet metal beams. The truss members are joined to the other members by spring truss pins or clips. These clips ar... | 04/05/1988 |
| 4735092 | Apparatus for rupture testing metal films A rupture testing procedure is carried out on metal foils at a number of process temperatures to evaluate their suitability for use in printed wire multilayer circuit boards. The test stand has a heated platen capable of heating foil test samples up to so... | 04/05/1988 |
| 4733543 | Packaged air conditioner A package terminal air conditioning unit that is split into two sections, an indoor section and an outdoor section. The components of the indoor section are housed in an indoor cabinet of all molded construction having a recirculating air duct that is con... | 03/29/1988 |
| 4733937 | Illuminating system for endoscope or borescope An optical illuminating system for endoscope or borescope has a round fiber optic bundle light guide and a non-spherical lens disposed at the distal end of the light guide. The lens has a flat front surface and a compound rear optical surface formed of a ... | 03/29/1988 |
| 4733542 | Cabinet for air conditioning system A cabinet unit for housing component parts of an air conditioning system and in particular, to a cabinet formed by three molded sections that include a base section, a cover section and a back section that are interlocked in assembly to establish a high s... | 03/29/1988 |
| 4730253 | Tester for measuring impulsivity, vigilance, and distractibility A small, portable and inexpensive apparatus, and a testing method using the same, are employed to obtain objective data about children to differentiate between hyperactive and non-hyperactive children. In a Delay Task, the child depresses a button, and af... | 03/08/1988 |
| 4727727 | Integrated heat pump system An integrated heat pump and hot water system having a refrigerant to water heat exchanger that includes first and second refrigerant circuits in heat transfer relation with a hot water circuit for circulating water from a storage tank through the heat exc... | 03/01/1988 |
| 4727665 | Hydraulic actuated moldboard with automatic lock A locking mechanism for a fluid actuated snowplow which automatically locks the moldboard unit of the plow in a desired position and simultaneously therewith relieves the pressure on the fluid drive unit whereby the locking mechanism and not the drive uni... | 03/01/1988 |
| 4727859 | Right angle detachable prism assembly for borescope A detachable prism assembly for a small-diameter borescope has a generally cylindrical housing with an open end that fits over a viewing head of the borescope, a prism, and a sliding prism holder within the housing. A spring urges the holder and prism pro... | 03/01/1988 |
| 4727732 | Device for detecting the presence of an individual yarn in a lap of parallel yarns This invention relates to a device for detecting the presence of an individual yarn in an advancing lap of parallel yarns, constituted by: detector disposed on one side and in the vicinity of this advancing lap, adapted to detect the presence of a yarn mo... | 03/01/1988 |
| 4726221 | Ultrasonic measurement of dispersed phase volumetric holdup in liquid/liquid dispersions The fractional volumetric holdup $c; of a dispersed phase in a two liquid dispersed phase system is determined by measuring the travel time of ultrasonic pulses on a fixed path for the dispersed phase, and for the two liquids separately, and caluclated... | 02/23/1988 |
| 4723466 | Self-sharpening hole punch for packaging with resilient waste expelling mechanism A self-sharpening hole punch for plastic bags includes a pneumatically operated punching apparatus for punching wicket pin receiving holes in a flexible film or plastic bag. If desired, a tear slit may be simultaneously formed to enable the bag to be quic... | 02/09/1988 |
| 4723820 | One-room doll house A display assembly for miniatures comprises a case with a rear wall panel, side wall panels, and floor and ceiling panels which can be removed and reinserted. The floor and ceiling panels are supported in grooves in side support members within the case an... | 02/09/1988 |
| 4721313 | Anti-erosion labyrinth seal An erosion resistant labyrinth seal for use in a rotating machine, such as a turbine or a compressor, that has bleed holes formed in the labyrinth cavities for carrying away erosion producing contaminants entrained in a controlled flow of fluid passing th... | 01/26/1988 |
| 4717297 | Support and guide for multiple spindle head A support bracket and guide assembly is employed with a multiple spindle head or other milling device to be mounted on a milling machine. A support bracket mounted on the horizontal dovetail ways of the machine holds a guide plate in which a vertical guid... | 01/05/1988 |
| 4717023 | Convention box A convention box is folded from a single flat sheet of cardboard, corrugated board or other similar rigid material, to form a disposable yet durable attache case that can be handed out to attendees at a convention or meeting. Side panel members attached t... | 01/05/1988 |
| 4716736 | Metal assisted carbon cold storage of hydrogen Hydrogen is stored at cold temperatures (room temperature to liquid nitrogen temperature) by sorption in a high unit surface area activated carbon storage medium. A minor amount of a transition metal is dispersed in the carbon, and this significantly incr... | 01/05/1988 |
| 4714075 | Biopsy channel for endoscope A biopsy channel for use in the insertion tube of an endoscope or borescope having a reinforced length that passes through the steering section of the tube which can be bent to a small radius without collapsing or losing its circularity. The tubing is pre... | 12/22/1987 |
| 4710980 | Protecting garnment usable in particular in hairdressing salons and new type of towel incorporated in the design of said garnment Protecting garment usable in particular in hairdressing salons, of the type composed of an overall or cape, designed to be wrapped around the user's body, and of a towel adaptable on said overall. According to the invention: the overall or cape is a one-piece ... | 12/08/1987 |
| 4710681 | Process for burning a carbonaceous fuel using a high-energy alternating current wave A process for burning a carbonaceous fuel is disclosed. This process involves the steps of providing a combustion chamber equipped with a spark gap, introducing the fuel into the chamber, providing a high-energy a.c. wave, and connecting the wave to one o... | 12/01/1987 |
| 4706655 | Shield for endoscope elevator cable seal The control cable for a rockable forceps elevator of a side-looking endoscope has an elastomeric sleeve covering the exterior part of the cable from the endoscope head to the connection of the cable with the elevator. Seals are effected between the sleeve... | 11/17/1987 |
| 4706805 | Carrying container for returnable cans A top loading carton made from a unitary sheet of inexpensive disposable material in which returnable beverage containers, such as bottles or cans, are collected and returned to a redemption center. The sheet is folded to form two adjacent bins each of wh... | 11/17/1987 |
| 4704742 | Writing shield A writing shield having apparatus for preventing a document being written upon from being soiled by the hand of a writer who might work in a dirty environment. The shield includes a J-shaped body that conforms to the back or heel of the hand and the outsi... | 11/10/1987 |
| 4704854 | Flexible coupling for a wire stranding machine A stranding machine for the production of rope from a plurality of strands comprises a rotary tube formed of two or more tube sections coupled end to end to rotate about a common axis. A flexible connector joins adjacent ends of successive ones of the tub... | 11/10/1987 |
| 4703400 | Shock resistant vehicular lamp A vehicular lamp having a one piece open topped resilient housing containing an outer peripheral groove that permits the housing to be snapped into a receiving opening formed in a body panel of a vehicle. The housing further includes an inner peripheral g... | 10/27/1987 |
| 4702029 | Combination shooter's bench and gun carrying case A gun case for a target rifle also serves as a collapsible portable shooter's bench. The bench has three detachable legs and three sockets or mounts on each side, permitting the shooter's bench to be set up for the right handed or left handed shooters. A ... | 10/27/1987 |
| 4701726 | Trap filter assembly A trap filter assembly, of the type which can be employed with a video cable system to block a particular channel or band of channels and pass the remaining video signal, is formed of a circuit board, a centrally-disposed cylindrical ground block, and a h... | 10/20/1987 |
| 4700693 | Endoscope steering section A steering section for an endoscope or borescope employs a plurality of steering cables passing through peripheral bores in axially aligned flat washers. Spacer beads are strung on the cables between the washers to define hinges for the bending of the ste... | 10/20/1987 |
| 4693384 | Excavator boom derrick An articulated arm-type excavator machine has a boom which has a trolley track affixed onto its underside. A trolley member from which a pulley block can be suspended travels along this track, and is urged into an operator-selected position by a double-ac... | 09/15/1987 |
| 4692630 | Wavelength specific detection system for measuring the partial pressure of a gas excited by an electron beam An optical partial pressure gas analyzer employs an electron beam to excite the outer electrons of gas atoms or molecules, and one or more photomultiplier tubes or other similar detectors to detect wavelengths of photons characteristic of the decay of the... | 09/08/1987 |
| 4690755 | Anaerobic contactor In the treatment of high strength wastewater containing anaerobically digestible nutrients and organic substrates, the water is passed through a sealed reactor housing and the pressure in the headspace over the water is reduced under controlled conditions... | 09/01/1987 |
| 4688582 | Portable hand-held tympanometer A portable, hand-held tympanometer that has the capability of performing the tympanometry and of displaying and storing the test results all within the hand-held instrument. A separate unit that is not in any way attached to the tympanometer during the te... | 08/25/1987 |
| 4685565 | Interconnectable beverage container system An interconnectable beverage container system has tongue and groove members spaced at regular intervals about the periphery of the body of each container. The tongue members each have a front surface and a pair of oppositely disposed axially extending und... | 08/11/1987 |
| 4681086 | Viewing instrument for chimney An instrument for viewing the vent of a chimney while the chimney is working that includes a quartz rod that is mounted in the chimney above the flue entrance thereto. The rod is adapted to transmit light travelling down the chimney to a viewing station o... | 07/21/1987 |
