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"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 |
| 7726033 | Multi-point measuring method and surveying device There are provided a telescope unit (5) having a first image pickup unit for acquiring a wide-angle image and a second image pickup unit for acquiring a telescopic image with higher magnification than the wide-angle image, a distance measuring unit for perfor... | 06/01/2010 |
| 7411512 | Tracking the geographic location of an animal Systems and techniques for tracking the geographic location. In one aspect, a method includes receiving timed magnetic field information descriptive of a magnetic field to which a magnetometer was subject, the magnetic field information having been collected while t... | 08/12/2008 |
| 7335167 | Posture realignment system A software system and apparatus for the collection of various measurements of the human body representing deviations from an ideal posture in several planes of motion relative to the body. A specially designed apparatus enables the correct measurements, while the so... | 02/26/2008 |
| 7299556 | Method for checking or calibrating the angle-dependent alignment of a high-precision test-piece The invention related to a method for checking or calibrating the angle-dependent alignment of a reference structure on a high-precision test-piece. After arrangement of the test-piece on a retainer piece, a pre-alignment of an optical unit and/or the reference stru... | 11/27/2007 |
| 7191530 | Compass assembly A compass assembly includes a tape measure apparatus that includes a housing and a tape measure removably extendable outwardly of the housing. A disc has a top side, a bottom side and a peripheral edge. The disc has a centrally located opening extending therethrough... | 03/20/2007 |
| 7070190 | Extendable and angularly adjustable handle for wheeled luggage A wheeled luggage case that is tilted for towing is provided with a retractable and, optionally, telescoping handle (4) assembly that is withdrawn from the interior of the case to an extended vertical position at the intersection of the top and rear walls, fr... | 07/04/2006 |
| 6912799 | Marking and scoring guide A guide for assisting in marking a measurement and/or scoring a sheet of drywall, paneling or other planar building material has a bore for receiving a pencil or other marker and has a slot for receiving a scoring blade therethrough. The guide may have a support for... | 07/05/2005 |
| 6739063 | Combination compass A combination compass. The compass includes a housing, a compass device mounted inside the housing, a top cover pivoted to one end of the housing and capable of covering over the compass device. The top cover has a mouthpiece, a resonance chamber, an air passage con... | 05/25/2004 |
| 6718644 | System for aligning a hub/mast with a soffit penetration point and method of using same A system for aligning a hub/mast with a soffit penetration point uses an insert that is similar in shape to a terminal adapter that is threadably received within a hub of a meter base. An opening within the insert receives a laser such that when the insert is receiv... | 04/13/2004 |
| 6625895 | Servo-controlled automatic level and plumb tool A method and apparatus for leveling at least one output light beam in a construction tool. One embodiment of the apparatus includes a laser optical assembly for producing output light beams that define plumb, level, and right angle beams for use in constr... | 09/30/2003 |
| 6473980 | Infrared laser transmitter alignment verifier and targeting system A relatively inexpensive system is provided for detecting and visually indicating the relative location of the impact on a target of an invisible infrared laser beam emitted from a small arms transmitter (SAT) mounted on a combat rifle. A plurality of red... | 11/05/2002 |
| 5966826 | Dual usage level marking instrument A dual usage level marking instrument is provided that includes a leveling rod. This rod has a dotted-type laser device fixed at one end and a straight-type laser device fixed at the other end. Leveling elements are installed on this rod. The dotted-type ... | 10/19/1999 |
| 5842282 | Laser angle adjustment device for laser measuring instruments A laser angle adjustment device for laser measuring instruments including a rectangular casing, a fixed bubble level and an adjustable bubble level mounted on the casing at right angles, a barrel turned in a hole in the casing, a top cover fixedly fastene... | 12/01/1998 |
| 5784792 | Hand-held laser level grade checking device A tool for use in checking the level or grade of the ground surface in a construction area or site using a daylight visible wavelength semiconductor laser diode module to project a laser beam from the location of interest to a location where the elevation... | 07/28/1998 |
| 5666736 | Self-adjusting level for determining leveling between two distant points A self-adjusting level for determining the leveling between two distant points is disclosed. It mainly contains a main body and a light beam indicator. The main body contains a flame having two oppositely disposed supporting arms, a disc-like base dispose... | 09/16/1997 |
| 5604987 | Laser level, accessories and method of use A support for a laser beam generator in a carpenter's level is positioned on the level so that the laser beam generated will lie in the plane of a flat reference surface of the level. A battery or other power supply is housed in the carpenter's level toge... | 02/25/1997 |
| 5487222 | Combination level A combination level has a rectangular housing and liquid-filled vials each having an entrained gas bubble to indicate horizontal level and vertical plumb at a local location. A scope element is incorporated within the housing and utilized to ascertain lev... | 01/30/1996 |
| 5465492 | Alignment device for a hand tool The device has a fixed rod 15 aligned with the working axis of the tool, e.g. a pistol drill. The rod 15 is in spring biassed, telescopic sliding engagement with a tube 16 fixed to an indicator head 17. The head 17 includes a universal-type pivotal coupli... | 11/14/1995 |
| 5461796 | Gunsight device for rotating-wing aircraft A gunsight device for a rotating-wing aircraft having a hollow rotor hub (1), on which there are radially mounted blades constituting said rotating wing, and which is connected to the main transmission box (2) by a drive shaft coaxial with the rotor of th... | 10/31/1995 |
| 5410815 | Automatic player identification small arms laser alignment system A fixture automatically aligns a laser transmitter bolted to a rifle. A case is horizontally oriented and a hinged end cover is swung upwardly to reveal a control unit. The barrel of the rifle is supported on a weapon rest mounted to the base unit and the... | 05/02/1995 |
| 5394616 | Laser positioning device A laser positioning device is provided in which a level is associated with a demountable mounting set-up and a plate member. The plate member projects laterally from the level and is scribed with a protractor. A pointer is pivotally associated with the ap... | 03/07/1995 |
| 5124844 | Method and apparatus for locating celestial objects A method and an apparatus for locating in the sky celestial objects, using a telescope, wherein two guide stars and the celestial object are represented, according to their respective locations, on a disc which is able to rotate with respect to the telesc... | 06/23/1992 |
| 5035060 | Method of mapping underground mines A method wherein a light emitting device, such as a laser, is used to precisely measure strike measurements of planar geologic features; for example, bedding planes, fractures, or fold axes. A pre-existing survey line between two spads is first located on... | 07/30/1991 |
| 4594788 | Light-tight combination micrographic map-reader protractor compass A movable film cartridge with at least one view superimposed by a protractor image on transparent film is further provided with a compass viewed through a prism at an edge of the field of view of the film containing a map or aerial view image. A double sp... | 06/17/1986 |
| 4517749 | Stable plumb beam optical projector A viscous dampened sensitive pendulum carries a generally upwardly directed light source for indicating the gravity vertical. The sensitive pendulum is carried for two degrees of pivotal freedom by flexural pivots which are biased for operation at an erro... | 05/21/1985 |
| 4480390 | Apparatus and method for aligning an object with respect to top-dead center of a wheel The invention provides an optical alignment method and apparatus for aligning a selected object with respect to an top-dead-center portion of a substantially circular wheel. A base mounted on the wheel has a positioning mechanism for effecting alignment w... | 11/06/1984 |
| 4459758 | Topographical surveying instrument The present invention relates to a topographical surveying instrument, comprising: a horizontal table bearing a shaft perpendicular to the plane of the table, a device adapted to rotate on the shaft and comprising: a generator of a light beam perpendicular to the a... | 07/17/1984 |
| 4395828 | Combination geodetic transit compass and signal mirror A geodetic compass having a mirrored cover that has the dual purpose of providing means for reading the compass needle orientation for geodetic purposes, while at the same time having cross hatch diffractional sighting means incorporated in said cover and... | 08/02/1983 |
| 4347739 | Measuring equipment for the determination of terrestrial refraction A measuring arrangement is described for determining the terrestrial refraction in geodetic measurements, (such as trigonometric height transfers when staking out and for precision tachymetry, controlling devices for building machinery using a laser beam,... | 09/07/1982 |
| 4343090 | Suspension device for angle indicator A suspension device for an angle indicator intended to indicate the angle of an object to the vertical line and comprising two angle-indicating devices designed each to indicate a predetermined angle to the vertical line and located in two planes perpendi... | 08/10/1982 |
| 4305209 | Adaptor An adaptor for mounting one instrument, such as an electronic distance measuring device, atop another instrument, such as a telescope or theodolite, for movement together about a horizontal axis with a base member attached to the upper device and presenti... | 12/15/1981 |
| 4236324 | Aircraft glide path teaching aid A gimballed sight tube is mechanically positioned in alignment with a pilot's forward line of sight and it is set at a predetermined glide path angle. During a landing approach, the runway will be visible within the sight tube on or in proximity to the ce... | 12/02/1980 |
| 4232449 | Bore sighting apparatus The bore sighting apparatus or alignment device is comprised of a two-part ring hinged together and provided with a clamp for securing the ring on the muzzle of a howitzer. A pair of hinged witness sights are provided on the ring and a pair of arms extend... | 11/11/1980 |
| 4219939 | Method and device for surveying the basal area of a forest stand The present invention relates to a method and device for carrying out a survey of the basal area of a forest stand and the distribution of the individual trees with respect to diameter classes. The device of the invention comprises a caliper combined with a re... | 09/02/1980 |
| 4112584 | Telescope level adjusting means Fine adjustment of a surveying instrument telescope reference spirit level is effected by rotating the bubble vial of the level about an axis which is slightly angularly displaced from the longitudinal axis of the vial.... | 09/12/1978 |
| 4060908 | Sighting device for relocation of site A folding sighting device to define and then to relocate the point where the user is placed, said device allowing the user to simultaneously identify linearly opposite reference points to establish a first reference line, and to subsequently fix and recor... | 12/06/1977 |
| 3940858 | Method of measuring antenna reflector surface accuracy The antenna reflector whose surface is to be measured is mounted on a moderately level surface. A relatively thin full diameter template is located sequentially at n different locations in the antenna reflector. Spacers are disposed between the template a... | 03/02/1976 |
