Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7370790 | Apparatus for visualizing and determining holding pattern and entry A holding pattern aid apparatus to enable a pilot in instrument conditions to instantly visualize a holding pattern and determine an appropriate entry procedure, is disclosed. The aid is configured to attach to a kneeboard while permitting the pilot to flip the disp... | 05/13/2008 |
| 7337946 | Device for resolving interpersonal relationship issues A device for resolving interpersonal relationship issues comprising: (a) a plurality of text sheets comprised of flexible, transparent material; (b) a rigid front cover; and (c) a rigid back cover; wherein each text sheet comprises an opaque band bearing text on eit... | 03/04/2008 |
| 7334469 | Methods and systems using ratiometric characterizations to improve air data accuracy A method for characterizing pressure sensors to improve accuracy in an air data system is described where the sensors include at least one static pressure sensor and at least one total pressure sensor. The method includes characterizing the static pressure sensor an... | 02/26/2008 |
| 7314179 | Stored-value card with movable graphic portion A stored-value card assembly includes a base substrate and an auxiliary member. The base substrate includes an account identifier linking the stored-value card to at least one of a financial account or a financial record. The auxiliary member is movably coupled to t... | 01/01/2008 |
| 7287332 | Airplane pilot aid A pilot aid that includes a sheet material having indicia thereon indicative of a plurality of predetermined flying parameters including at least wind velocity and direction. A plurality of indicia wheels are each separately mounted from the sheet material and each ... | 10/30/2007 |
| 7251903 | Method for spacing guides on fishing rods and chart for spacing same A chart for locating guides on a fishing rod comprising a plurality of side by side lanes each having a vertical portion and in a predetermined plane and arcuate lane portions of different radii and curved through an arc of about ninety degrees (90°) from said pred... | 08/07/2007 |
| 7204034 | Method for spacing guides on fishing rods and chart for spacing same A chart for locating guides on a fishing rod comprising a plurality of side by side lanes each having a vertical portion and in a predetermined plane and arcuate lane portions of different radii and curved through an arc of about ninety degrees (90°) from said pred... | 04/17/2007 |
| 7152332 | Navigational assist system Disclosed is a navigational assist system to assist a pilot or other person in the entry into an entry environment, such as a holding pattern or runway traffic pattern. The navigational assist system is comprised of a plurality of entry determining elements moveably... | 12/26/2006 |
| 6950731 | Traffic pattern approach computer A mechanical computer used in tandem with a GPS to approach, enter and fly the traffic pattern of any uncontrolled airport. Pilots must navigate to a relatively small area or approach point before entering the traffic pattern of an uncontrolled airport. While airpor... | 09/27/2005 |
| 6167627 | Aeronautical holding pattern calculator A device for computing the heading of an airplane in the outbound leg of a holding pattern, and the bearing to a VOR or NDB station at which the airplane should begin turning inbound at the end of the outbound leg, given the bearing of the outbound leg, t... | 01/02/2001 |
| 6038777 | Method and apparatus for sight reduction A sight reduction apparatus includes a sextant, a processor, and a nautical almanac, preferably all provided in an unitary housing. The sextant includes a fixed telescope which is pointed at a known celestial body, and a radial arm is moved against an arc... | 03/21/2000 |
| 5264682 | Method and apparatus for plotting boat's position to rhumb line when tacking A method and apparatus for plotting a boat's position relative to a rhumb line when tacking. The apparatus includes three independently rotatable disk members. A first disk member presents a compass rose, the second of the disk members presents an indicat... | 11/23/1993 |
| 5167072 | Directional plotter for underwater searches A directional plotter for underwater searches, land searches, land orienting, or the like includes a pair of first and second relatively rotatable discs with the first disc including first, second and third concentric sets of compass degrees in radially a... | 12/01/1992 |
| 4855577 | Navigational and yacht racing calculator A navigational calculator (10) for establishing the ratios of time, or distance, to be spent on port or starboard tacks, respectively, during the maneuvering of a yacht to a windward destination. A plurality of disk members are carried on a central suppor... | 08/08/1989 |
| 4831538 | Hand-held navigation and flight performance computer A menu-driven, hand-held navigation and flight performance computer having a keyboard, display, and CPU. The display includes a menu region for displaying the names of navigation and flight performance functions, one or more parameter name regions and a d... | 05/16/1989 |
| 4689476 | Mariner's dogleg course distance calculator There is disclosed a marine calculator of the slide rule type whereby the running distance to a destination station over a dogleg or zig zag course may be readily determined from knowledge of the rhumb line course distance and the departure angle of the d... | 08/25/1987 |
| 4652728 | Wind and course calculator for navigation A wind and course calculator for navigation is provided comprising two superimposed disks made from a transparent material, a mobile disk 1 movable in rotation and in translation carrying a network of concentric circles corresponding to the speeds and of ... | 03/24/1987 |
| 4491724 | Course and heading computer A course and heading computer for use with marine charts which includes a transparent planar baseplate having a semicircular edge at one end joined with rectangular edges at the opposite end, the straightedge parallel to the shorter dimension of the basep... | 01/01/1985 |
| 4456821 | Time/speed/distance slide rule A slide rule for solving time/speed/distance problems where distances are measured with a single or universal ruler applicable to all charts or maps regardless of scale. Result is achieved by printing alongside time entries on the slide rule a row of appr... | 06/26/1984 |
| 4446624 | Single handed set-up apparatus A template, for use in conjunction with a radar presentation to train an intercept controller in coordinating aircraft movements, defines spatial relationships between aircraft symbols presented on the radar through range and separation scales and posit... | 05/08/1984 |
| 4442605 | Dead reckoning navigation instrument A dead reckoning navigation instrument, consisting of magnetically connected components, for navigation watercraft between known waypoints. A trackline on a transparent trackline plate connects the waypoints. A direction line on a transparent direction li... | 04/17/1984 |
| 4359628 | Navigational aid A navigational aid device comprising three concentrically mounted relatively moveable scales and at least one centrally mounted rotatable arm defining a moveable radial line intersecting the scales and their axis of rotation, at least the central portion ... | 11/16/1982 |
| 4337577 | Declination transposer A direct reading map plotter for converting grid values to magnetic values and vice versa without having to perform arithmetic calculations. The plotter includes a transparent base having a recess formed therein in which is rotatably supported a transpare... | 07/06/1982 |
| 4327497 | Marine computer A graphic vector plotting instrument, particularly suited for marine navigational computations. A cursor disk is surrounded by a concentric compass disk, and both are rotatable about their common center. The cursor disk has a pair of perpendicular cursor ... | 05/04/1982 |
| 4152835 | Dual stereographic net Instruments presently available for stereographic calculations use a single net over which transparent paper is moved. The device of this invention has two nets, one printed on each side of a rotatable disc in a frame and the calculations are made by rota... | 05/08/1979 |
| 4134006 | Navigational wind effect computer for aircraft A device utilizing three discs, which are rotatably positionable relative to each other, is provided for computing aerial navigation wind correction angle and ground speed correction for various combinations of aircraft True Course, Wind Direction, Wind V... | 01/09/1979 |
| 4103809 | Pilot's kneepad A pilot's kneepad for use as an aid to navigation by pilots and navigators of aircraft and other vessels consisting of a plate which has means for attaching it to the upper surface of the thigh of a seated pilot, the plate having on its upper surface info... | 08/01/1978 |
| 4096635 | Navigational computer This disclosure pertains to a navigational computer having three arms slideably and pivotably secured to one another. A pair of compass roses are affixed at the intersection of one arm to each of the adjacent arms. Angularly disposed indicia, on the compa... | 06/27/1978 |
| 4095342 | Radio navigation aid A navigation aid for visually indicating to an aircraft pilot or other user the distance and bearing to a destination by use of radio navigation information from two pre-located sources. The axis of a compass rose representative of the destination is pres... | 06/20/1978 |
| 4072849 | Apparatus and method for calculating vehicle movement parameters An apparatus and method of calculating a vehicle's elevation, speed, distance and time to arrive at a predetermined point. The apparatus includes a mechanical spring-driven clock mechanism having a rotating settable pointer passing adjacent a clock face f... | 02/07/1978 |
| 4023018 | Navigation system and method A coordinate indicating and plotting system wherein compass heading signals are periodically integrated at frequencies related to the distance traveled by a water, air or land vehicle to obtain coordinate change signals for visual indication of vehicle co... | 05/10/1977 |
| 4011987 | Aircraft descent profile calculator An aircraft descent calculator including a central member defining an outer annular dial face about the periphery thereof; an intermediate member defining an intermediate annular dial face about the periphery thereof rotatably mounted on the central membe... | 03/15/1977 |
| 3971915 | Sun angle calculator Disclosed is a circular computer and system for determining the sun angle relative to the horizon from any given place and at any time. The computer includes transparent, rotatably mounted discs on both sides of the circular disc member. Printed on one si... | 07/27/1976 |
| 3957199 | Navigational aids A course correction calculator for use in light aircraft includes two arms pivotally connected together and each independently pivoted over a map supported on a base. The pivot connecting the two arms is slidable longitudinally along one of the arms and t... | 05/18/1976 |
