Class 33/282 - Vertical angle

Subclass of Class 33 - Geometrical instruments
Definition: Device for measuring an angle which is in a plane perpendicular
No. of patents: 36
Last issue date: 11/30/2010

Number	Title	Issue Date
7841094	Optical instrument with angle indicator and method for operating the same The present invention relates to an optical instrument with an angle indicator and a method for operating the same enabling simple monitoring of instrument inclination and operation in a large angle range. The optical instrument comprises a base portion, a head port...	11/30/2010
7287336	Apparatus for producing a visible line of light on a surface, particularly a wall An apparatus and method for efficiently generating a visible line of light on a surface such as a wall or a floor for the purpose of facilitating the layout process used in construction. Reference marking elements on the instrument correspond to the light beam's pos...	10/30/2007
7278218	Laser line generating device with swivel base A base for a light generating device or a leveling device, having a first surface that includes a connection structure to receive and mount either a light generating device or a leveling device thereto, and a second surface including a nonmechanical attachment struc...	10/09/2007
7174647	Laser line projector with spherically rotatable support and level/plumb indicators for the support A spherically rotatable support for a light image projector has level and/or plumb indicators for leveling or plumbing a central reference frame of its spherical rotation. A projected light image, such as a laser line segment of relatively short length may be succes...	02/13/2007
7107980	Carpenter's marking device A device for assisting a user in marking an overhead surface to correspond with a mark on a surface below includes a substantially hollow housing having pressurized gas containers received therein. The pressurized gas containers are in communication with a projectio...	09/19/2006
7040030	Laser centering device A laser centering device (30) that is attached to a survey apparatus by replacing it with a centering telescope optical system is formed of an inner barrel (32) that fixes a pentagonal prism (40) at one end thereof and is internally provided wit...	05/09/2006
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
6941665	Pivotable laser level A laser level that is mounted within a housing with the housing being pivotally movable relative to a base. The base is then to be placeable in conjunction with a hinge plate assembly composed of a main plate and an adjusting plate with the adjustable plate being al...	09/13/2005
6909551	Side by side laser level device A laser level includes a pair of level units arranged side by side and disposed in different oriented directions. Each laser level includes a laser light source adapted to emit a laser beam, a beam splitter adapted to simultaneously split the beam into first and sec...	06/21/2005
6854191	Alignment laser projection system A laser projection system capable of irradiating a light beam for alignment is provided. The alignment laser projection system comprises a reflection unit, a moving reflection unit, irradiation units that irradiate light to the reflection unit and the moving reflect...	02/15/2005
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
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
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
6604293	Surveying instrument and a method for drive control thereof A surveying instrument assumes either a high-speed drive control mode for driving a surveying optical system at high speed or a low-speed drive control mode for driving the surveying optical system at low speed. A motor is continuously driven through a PW...	08/12/2003
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
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
6163969	3D laser leveler A 3D laser leveler is provided for accurately locating distant parallel or extension lines. The 3D laser leveler has a base block and a rotator. The base block provides a base plane for resting upon a flat surface when in use, a first leveling unit for ex...	12/26/2000
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
5784793	Marking template for construction lasers A construction laser tool which projects a plumb beam is provided with a marking template, movable and separate from the tool's housing but securable to the housing, for transferring a point on a floor to the laser beam or, in another case, for transferri...	07/28/1998
5718054	Device for displaying a center point of a laser beam in a vertical-degree measuring system A device for displaying a center position of a laser beam in a vertical-degree measuring system comprises a light receiving device constituted by photosensors and a liquid crystal display panel for displaying a light receiving position. The light receivin...	02/17/1998
5644850	Laser plumb device A laser plumb device (10) comprising a facility (12) for emitting two narrow light beams (A) and (B) in which the light beams (A) and (B) are opposite and aligned to each other. A structure (14) is for supporting the light emitting facility (12) in a vert...	07/08/1997
5509209	Laser plumbing device In a projected light plumb device which is buoyantly supported within a fluid-filled container on a float platform which is horizontally supported by the fluid, an improvement wherein the float platform is inclined upwardly from its outer diameter to its ...	04/23/1996
5450675	Method and apparatus for vertically aligning a structure A method and apparatus for vertically aligning a structure. The vertical alignment device has a main body with a front face, a back surface, two side surfaces, and a top reflective surface with an edge and a cross hair extending from the edge; a planar me...	09/19/1995
5159401	Elevation-angle sensing, celestial navigation and surveying The invention features an elevation-sensing system comprising an elevation-sensing instrument which includes a sighting device having an optical axis for aiming at an object and an electronic elevation-angle sensor attached to the sighting device and havi...	10/27/1992
5044086	Drum screw with measuring drum for a sextant A spring element, surrounding the drum-screw axis, is fitted between an annular shoulder on the bearing bush of a drum screw and the measuring drum. The spring element, preferably an annular spring assembly, produces a defined contact-bearing force of the...	09/03/1991
5031327	Apparatus for fine adjustment of a sextant A drum screw with measuring drum for fine setting of a sextant includes a coaxial setting ring. The ring, which includes a vernier scale, is rotatable independently of the measuring drum to permit the user to avoid the tiresome zero correction and the nee...	07/16/1991
4972592	Sextant with adjustable handle An optical measuring instrument permits the user to adapt the handle position optimally to his individual wishes and habits while holding the instrument. An adapter is fixed to the limbus body. The adapter includes curved slots for accepting fixing screws...	11/27/1990
4958927	Optical angle measuring instrument A manually-rotatable switch knob is provided on the alhidade of a sextant that is connected to a switching pin of hardened steel arranged eccentrically to the mounting of the knob. The switching pin engages the drum-screw mounting and, under the action of...	09/25/1990
4696111	Device for assessing inclination A viewing device to assist a golfer or the like in assessing transverse inclination of terrain along his sight line, including a base assembly adapted for attachment to a cap, hat or headpiece worn by the golfer or the like, a vertical plumb element pivot...	09/29/1987
4455758	Bearing means for angle measuring instruments An angle measuring instrument such as a theodolite having a housing containing a viewing optical system. The housing has a pair of axially aligned horizontal shafts through which it is mounted on a support frame for a swingable movement in a vertical plan...	06/26/1984
4428671	Optical device for vertically positioning a sextant An optical device for vertically positioning a sextant to minimize the "tilt error" which occurs in a measured angle of altitude whenever the sextant is not held orthogonal to the horizon. The optical device can be fixed to the sextant and provides in the...	01/31/1984
4364183	Heliostat-adjusting solar sight A solar sight having a scale calibrated in terms of solar declination angle and reflector angle is provided with diffraction pattern forming means comprising a movable sighting tube which, when directed at the sun, provides a Fresnel pattern on a viewing ...	12/21/1982
4214373	Grade checker A grade checker for determining the elevation of a grade relative to a pair of reference points spaced apart on opposite sides of the grade. The checker comprises an elongated sighting tube vertically orientable between the reference points and including ...	07/29/1980
4197653	Electronic sextant An apparatus to be mounted on conventional sextants permitting faster, more accurate readings with memory storage capability. Alternative transducing means are attached to a sextant arm and generate electronic signals corresponding to amount of rotation o...	04/15/1980
3959888	Precise indexing detent A precise indexing detent comprises a pair of grooved members the plane groove faces of which define a polyhedron within which there may be positioned a sphere in surface contact with all such faces. A detent member comprising a spherical section is situa...	06/01/1976

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Class 33/282 - Vertical angle