Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7610687 | Method and rotating laser for determining an item of attitude information of at least one object The invention relates to both a method for determining the horizontal position of an object which is to be oriented toward a height reference plane in a highly precise manner; while using at least one rotating laser, as well as to the rotating laser itself. The rota... | 11/03/2009 |
| 7418786 | Marking device A marking device is disclosed which efficiently reduces damage affecting the gimbal mechanism even when such is used under sever conditions and is dropped from a high position. A marking device has a support mounted inside a housing, a light source unit holder swing... | 09/02/2008 |
| 7225549 | Process and device for measuring angles in the horizontal plane The invention concerns a process and a device for measuring angles relative to the horizontal plane of elements in vehicles, with at least one laser (L) and at least one target (Z), which are located via adapters (10, 20, 30, 40) on the element to be measured... | 06/05/2007 |
| 7213343 | Dual axis single motor platform adjustments system An arrangement for use in a light beam projection device for adjusting an orientation of a projected light beam is disclosed. The arrangement comprises a base frame, a support platform adapted to set the orientation of the projected light beam, and a pivot member pi... | 05/08/2007 |
| 7200946 | Alignment apparatus An alignment apparatus includes a central leg element and one or more secondary support leg elements in operative communication with the central leg element for providing support thereto. A sighting device rotatably attached to the central leg element includes an op... | 04/10/2007 |
| 7137207 | Measuring arrangement to determine location of corners for a building foundation and a wooden base frame, and the use thereof An arrangement comprising a laser projection device is used in determining the location of corners in constructing a foundation of a building or other structure. The arrangement is also used in positioning wooden beams perpendicular to one another in a floor frame o... | 11/21/2006 |
| 7124513 | Three way laser indicator A laser indicator has a laser mechanism having three laser generators generating laser beams perpendicular to each other. Each of the three laser generators is electrically coupled to a separate laser control motor for independent control of the beam of the correspo... | 10/24/2006 |
| 7099000 | Laser leveling apparatus A laser levelling apparatus includes a platform, a base assembly, a body assembly, a head assembly and a laser assembly. The body assembly is rotatable about a body axis relative to the base assembly, the head assembly is rotatably supported by the body and rotatabl... | 08/29/2006 |
| 7093373 | Displacement measuring instrument A displacement measuring instrument (1) has a spindle (25) penetrating a gauge body (11) to be slidably supported relative to the gauge body (11) to be displaced and a lifting lever (20) manipulated from the outside for forcibly sh... | 08/22/2006 |
| 7082691 | Laser level rotor assembly addressing angular drift A rotor shaft is supported in a housing of a rotor assembly for a laser level. Bearings support the rotor shaft for rotation relative to the housing. An adhesive fixes an outer race of at least one of the bearings in position between the rotor shaft and the housing.... | 08/01/2006 |
| 7081824 | Track monitoring equipment The alignment of railway tracks may be monitored using an accelerometer (36) mounted on a bogie (24) of a railway vehicle to detect lateral accelerations, and a displacement transducer (38) to monitor the lateral displacements of a wheelset (... | 07/25/2006 |
| 7051445 | Apparatus generating a light illuminated line An improved apparatus generating light illuminated line provides a possibility to produce and propagate the light line along the reference surface under any desirable angle. The improved apparatus generating light illuminated line includes a circular scale means com... | 05/30/2006 |
| 7031367 | Laser level A laser level disposable on a reference surface includes a housing, a pendulum pivotably connected to the housing, a first laser diode disposed on the pendulum for emitting a first laser beam along a first path, a first lens disposed on the pendulum in the first pat... | 04/18/2006 |
| 6996910 | Laser leveling device for generating parallel lines A laser leveling device includes a laser instrument having a base rotatably received in a cavity of a housing and having a light emitting device to generate a light beam, such as a line-shaped light beam. One or more batteries may be used to energize the light emitt... | 02/14/2006 |
| 6915583 | Laser level A light detector which includes a housing having front and rear walls, a light receiving section disposed on the front wall, and displays disposed on the front and rear walls for showing the location of received light relative on the light receiving section. Also di... | 07/12/2005 |
| 6912792 | Apparatus for determining a level surface An apparatus for determining a level surface includes a housing having a plurality of apertures and a power supply source disposed therein. A plurality of laser beam supply sources are operably controlled by the plurality of switches. A plurality of reflecting membe... | 07/05/2005 |
| 6873420 | Topographical measurement machine for bowling lanes and the like An automated lane surface measuring device comprising a controller for operating a drive mechanism for propelling the measuring apparatus and one or more sensors operated by the controller to measure topographical parameters of the bowling lane surface. In one embod... | 03/29/2005 |
| 6782034 | Laser plumbing and leveling instrument which adjusting height of horizontal line The present invention discloses a laser-plumbing leveler with adjustable height of the horizontal line, which comprises a laser emitting device, a laser line (plane) projecting optical system, and a laser line (plane) rotating and/or moving unit, wherein the laser l... | 08/24/2004 |
| 6710319 | System for radiating a reference laser beam and utilizing GPS units for installing an article A novel system for facilitating the work for setting the horizontal direction of a guide laser beam is disclosed. The guide laser beam (P) can be radiated in vertical and lateral directions from the horizontal direction as a reference by a guide laser beam radiator ... | 03/23/2004 |
| 6694630 | Multiple-axis laser emitter with optical beam splitter A multiple axis laser emitter (1) comprising an optical beam splitter (4) having at least two reflectively coated mirror surfaces (7a, 7b, 7c, 7d) oriented perpendicular to each other and each oriented at an angle of 45° to a collimated main beam (H) of ... | 02/24/2004 |
| 6679609 | Laser beam irradiation device A laser beam irradiation device, comprising a light source for emitting a laser beam, a cylindrical lens, an optical system for entering the laser beam to the cylindrical lens perpendicularly with respect to a center line of the cylindrical lens, and a lu... | 01/20/2004 |
| 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 |
| 6618950 | Projection apparatus for demarcation A projection apparatus has a frame having a top seat, a main body and a light source module. The main body includes a hanging mechanism that is pivotable about the top seat with respect to a first axis direction and a second axis direction, and a connecti... | 09/16/2003 |
| 6487781 | Bore path alignment system A bore path alignment system for accurately determining a desired bore pitch for a ground-boring device. The bore path alignment system includes a first pole, a first tube adjustably positioned upon the first tube, a guide tube with a pitch instrument piv... | 12/03/2002 |
| 6449856 | Laser plumbing device, long member plumbing device and long member plumbing method A laser plumbing device including a laser beam emitting device; a supporting device for supporting the laser beam emitting device and allowing swinging movements of the laser beam emitting device in a first direction X1 and a second direction Y1; a two-di... | 09/17/2002 |
| 6314651 | Rotary laser irradiating system and photodetection system The system according to the present invention comprises means for irradiating a plurality of laser beams by separating the laser beams in a vertical direction and means for forming a plurality of laser beam reference planes by rotary irradiation of said p... | 11/13/2001 |
| 6279239 | Device and a method for sizing odd parts of drywall for placement on ceilings and walls An integral apparatus having laser sighting means embodied in a pocket sized device, for use in determining end points along ceilings and wall perimeter edges to more accurately size drywall pieces to be installed in generally non-rectangular perimeter se... | 08/28/2001 |
| 6253457 | Laser beam direction correcting optical system for a surveying instrument A laser beam direction correcting optical system for a surveying instrument comprises a laser light source (1) for emitting a laser beam, an exit angle correcting system (17) for correcting an exit angle of the laser beam emerging therefrom in accordance ... | 07/03/2001 |
| 6212782 | Building line layout device A device for the measurement/layout of angles when using surveyor's stakes to locate reference points and erect building lines for construction of a structure. Capable of being used to determine one angle at a time for non-regular polygons, or for the sim... | 04/10/2001 |
| 6101728 | Versatile VH laser plumb A plumb system for construction projects having a laser module embedded within includes a spring or the like device acting as a connecting device to a tripod or the like apparatus for projecting a vertical laser beam to a vertical end point, from the floo... | 08/15/2000 |
| 6082013 | Apparatus for leveling an object For leveling an object, in particular a suspended ceiling, which is to be attached to mounting members, such as suspension wires, the latter are cut off or provided with a suited mark. A device with a detector for detecting a reference level is used for t... | 07/04/2000 |
| 6076266 | Theodolite with a disengageable adjustment mechanism A theodolite that includes a stand, a telescope, a friction gear and a worm gear. The telescope is pivotally secured to the stand. The clutch plate is secured to the telescope for at least limited rotational movement upon pivoting of the telescope. The fr... | 06/20/2000 |
| 5987763 | Drive device for aligning a theodolite A drive device for aligning a theodolite with a target, in which the theodolite is mounted rotatably in the horizontal direction on a theodolite foot. Provision is made of a control knob and an encoder connected thereto, the encoder emitting control signa... | 11/23/1999 |
| 5887353 | Two-speed continuous tangent screw An adjustment mechanism for a telescope of a theodolite. The mechanism includes a worm gear that is coupled to a friction gear of the theodolite. The friction gear is coupled to the telescope so that any rotation of the gear will induce a corresponding mo... | 03/30/1999 |
| 5782003 | Device for projecting a flat beam of diverging laser rays A device for projecting a flat beam of diverging laser rays comprises a base supporting a movable gravity self-leveling equipment and at least a laser beam or ray projector mounted thereon and provided with an optical lens assembly for transforming the la... | 07/21/1998 |
| 5689892 | Two-speed continuous tangent screw An adjustment mechanism for a telescope of a theodolite. The mechanism includes a worm gear that is coupled to a friction gear of the theodolite. The friction gear is coupled to the telescope so that any rotation of the gear will induce a corresponding mo... | 11/25/1997 |
| 5575073 | Apparatus for setting a horizontal plane by means of a level An apparatus for setting a level plane includes a spirit level having a parallelepiped shaped housing with a measuring base and a leveling plate with an upper plate surface on which the base of the housing of the level is disposed. The upper plate of the ... | 11/19/1996 |
| 5572796 | Laser beam pendular level A laser beam level which comprises a base, a support structure and a laser beam emitting assembly, the emitting assembly including a device for emitting a laser beam in a vertical Z plane and the emitting assembly being mounted in the support structure su... | 11/12/1996 |
| 5519642 | Electronic survey instrument An electronic survey instrument is controlled in accordance with a computer program to store a display image and a count value immediately before a power source is cut off. The display image and count values may then be restored without substantial initia... | 05/21/1996 |
| 5488777 | Utility line angle measurement device A small, portable, lightweight device enabling one person to quickly and accurately measure the angle of a utility line at a given pole consists of a protractor rotatable about a central axis divided into quadrants with a rotatable pointer mounted on the ... | 02/06/1996 |
