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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7274464 | Position measuring device A position measuring device for detecting the spatial position of a movable element in relation to a base body, the device including a linear measuring device that measures a distance between a movable element and a base body and an angle-measuring apparatus that me... | 09/25/2007 |
| 7212294 | Method for determination of the level of two or more measurement points, and an arrangement for this purpose A method and arrangement for determining the level of at least two measurement points with a light beam direct along a first direction and being deflected through 90° with respect to the first direction to a second direction, the second direction being rotated thro... | 05/01/2007 |
| 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 |
| 7155835 | Self-leveling laser alignment tool and method thereof which compensates for material stiffness of an included pendulum A self-leveling laser alignment tool and method thereof which provides a laser beam in a substantially truly level or plumb orientation are disclosed. Magnetic attraction is used to compensate for leveling errors of an approximately or partially leveled pendulum pla... | 01/02/2007 |
| 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 |
| 7114689 | Gimbaled mounting bracket A gimbaled mounting bracket apparatus for aligning an actuator with a receptacle is disclosed, having a mounting ring rotatable around a pair of gudgeons. A concentric rotation ring attached to the pair of gudgeons. The concentric ring is mounted to a base along a r... | 10/03/2006 |
| 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 |
| 7076880 | Two wire circuit for a laser pendulum A two wire laser control circuit for a laser leveler includes a switch mounted on a housing and having an electrical current passing therethrough. The switch has a first position and a second position. A diode bridge is mounted on a pendulum. A plurality of laser di... | 07/18/2006 |
| 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 |
| 6938350 | Apparatus for producing a reference plane The present invention provides an apparatus and method for projecting a reference plane. The invention features emitting a light beam, splitting the light bean into two or more resulting beams, and converting the resulting beams into respective projected lines. The ... | 09/06/2005 |
| 6909374 | Level/position sensor and related electronic circuitry for interactive toy A sensor for use in an interactive electronic device. The sensor comprises a base member having at least one recess formed therein which is partially defined by a peripheral wall thereof. Disposed within the peripheral wall of the base member is at least one switch.... | 06/21/2005 |
| 6906310 | Level A level. A projected plane is generated substantially parallel to a reference plane by a light source rotatably emitting light. A main shaft, having a rotary portion and a pair of protrusions and connecting to the light source, is perpendicular to the projected plan... | 06/14/2005 |
| 6903813 | Miniaturized system and method for measuring optical characteristics A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light rece... | 06/07/2005 |
| 6724471 | Arrangement for the vertical orientation of a geodetic instrument An arrangement for the vertical orientation of a geodetic instrument over a ground point, comprises an optical observation device for visual sighting of the ground point with a target beam, a laser device for generating a laser beam, and an optical in-coupling eleme... | 04/20/2004 |
| 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 |
| 6493952 | Measuring device subjected to gravitational forces and having a pendulous suspension A measuring device (6) subjected to gravitational forces and including at least one laterally oscillating, pendulously suspended, support structure (7) for supporting at least one of a measuring element, and optical element, and a suspension element for s... | 12/17/2002 |
| 6028665 | Self-leveling laser plumb A self-leveling laser plumb apparatus comprising an elongated straight tubular housing having an upper end and a pointed lower end thereof and a laser beam module prealigned and connected in said upper end in conjunction with confirmed precise alignment o... | 02/22/2000 |
| 6014211 | Device and method for providing a laser level plane Disclosed is a laser level device that includes a reference surface, and a laser beam generator that is coupled to the reference surface. The laser level device also includes a compensator that is supported proximate to the reference surface. The compensa... | 01/11/2000 |
| 5994688 | Position leveling sensor for a laser transmitter A device for leveling a laser transmitter is provided. An optical position sensor is used to measure the position of a compensator assembly. The compensator assembly automatically adjusts the position of the laser beam once the compensator assembly is wit... | 11/30/1999 |
| 5917587 | Automatic plumb laser beam generator A plumb laser beam generator includes an internal self-leveling feature to assure the projection of a substantially plumb beam despite tilt of the instrument's housing. Tilt compensation is achieved in preferred embodiments using the angular deflection of... | 06/29/1999 |
| 5912733 | Laser plumb line A laser is pivotally concentrically mounted in a gimballed mounting structure having outer and inner pivotally mounted concentric rings. An angle indicator is mounted to said outer ring so as to be viewable by a user and cooperates with said inner ring to... | 06/15/1999 |
| 5825555 | Beam projecting apparatus A beam projecting apparatus has a light source and a reflecting device for reflecting and rotating a bundle of light emitted from the light source for forming a reference plane. A shape converting optical system is provided in an optical path from the lig... | 10/20/1998 |
| 5790248 | Laser beam levelling device The present invention provides a laser beam levelling device which is provided with two rotatable heads wherein a horizontal laser plane can be emitted from the first head which is rotatable round a vertical axis and a vertical laser plane can be emitted ... | 08/04/1998 |
| 5754287 | Beam projecting plumb apparatus A plumb apparatus is described in two embodiments having common operational and construction features. In a first embodiment, a beam projector is mounted within an upper end of an elongate pipe which is slidingly fit in an angularly pivotable mounting. Th... | 05/19/1998 |
| 5724744 | Self-leveling device mounted on a rotating base for projecting laser rays The projector device for laser rays (4) is mounted on an apparatus which oscillates and is self-leveling (2, 3, 5) under the force of gravity whereby in the equilibrium position a ray is projected on one or more walls always in a perfectly horizontal posi... | 03/10/1998 |
| 5680208 | Gravity oriented laser scanner A laser scanner 50 includes a laser 76 affixed to a pendulum 66 with a damper 80 for damping the movement of the pendulum 66. The laser scanner 50 is controllable through a remote control 62 for positioning the laser beam as desired. Both horizontal and v... | 10/21/1997 |
| 5619802 | Automatic level and plumb tool An automatic plumb, level and pointing tool uses a visible laser diode to project light beams in two modes through two windows. In the first mode of operation, the unit is able to project a plumb-up beam and a level beam of light while resting on a surfac... | 04/15/1997 |
| 5617202 | Diode laser co-linear and intersecting light beam generator Efficient and cost-effective generation of two co-linear laser beams or two or more intersecting beams, for the purpose of alignment as in the construction industry, takes advantage of the unequal divergence of light from a typical laser diode that produc... | 04/01/1997 |
| 5552886 | Laser beam transmitting apparatus This invention provides a laser beam transmitting apparatus which can make the levelling work unnecessary to thereby mitigate the burden of an operator and improve work efficiency. The apparatus is provided with a base, a beam transmitter for supplying a ... | 09/03/1996 |
| 5537205 | Self leveling laser plumb assembly A self leveling laser plumb assembly having a battery powered laser unit, a laser unit mounting support, and at least three support legs secured to the bottom of a gimbal ring assembly. The top end of the laser unit mounting support removably receives the... | 07/16/1996 |
| 5524352 | Automatic level and plumb tool A self-leveling plumb, level and pointing tool uses a visible laser diode to project light beams in two modes through two windows. Accurate, low cost structures for generating level and plumb beams and planes of light are disclosed. In principal embodimen... | 06/11/1996 |
| 5459932 | Automatic level and plumb tool An automatic plumb, level and pointing tool uses a visible laser diode to project light beams in two modes through two windows. In the first mode of operation, the unit is able to project a plumb-up beam and a level beam of light while resting on a surfac... | 10/24/1995 |
| 5220455 | Passive, gravity referencing, fluid damped, two stage pendulum optical mount A mount for use by optical elements in a laser tooling alignment system. The mount provides a high degree of isolation from external rotational disturbances about any horizontal axis (i.e., pitch and roll) by retaining optical components in a fixed relati... | 06/15/1993 |
| 5112126 | Apparatuses and methods for making geophysical measurements useful in determining the deflection of the vertical A non-magnetic apparatus is disclosed for finding the deflection of the vertical. That apparatus has a device for finding an instrument spatial angle between a reference direction and an instrument characterization direction, and a device for finding a de... | 05/12/1992 |
| 5108177 | Two-axis levelling instrument with a single pendulum for projecting a level laser beam A simple structure for providing a level laser beam. A pendulum is suspended by at least two suspension supports along the line parallel to a path of a laser beam emitted from a laser. An optical element is mounted on the pendulum to intercept the laser b... | 04/28/1992 |
| 5033848 | Pendulous compensator for light beam projector A pendulous compensator for use in a light beam projector including a light beam source comprises first and second upper pulleys spaced from one another and secured to the light beam projector. First and second lower pulleys are positioned beneath the fir... | 07/23/1991 |
| 5026157 | Magnetic motion damping system for pendulous compensator Motion damping apparatus is provided for use in a light beam projector including a light beam and a pendulous compensator adapted to movably support a mirror for deflecting the light beam to compensate for tilting of the projector. The apparatus comprises... | 06/25/1991 |
| 4993161 | Laser beam level instrument The laser beam level instrument includes a laser diode mounted on a pendulous platform suspended from a frame by gold plated Mylar strips which also serve as conductors for supplying power to the diode. The strips are mounted with a 180 degree twist to ov... | 02/19/1991 |
| 4981331 | Low reflection optical reticle and method of making same An improved optical reticle having a high degree of reflection suppression is provided. In accordance with the preferred embodiment of the invention a fused silica reticle substrate is optically contacted with a fused silica cover plate to yield a sandwic... | 01/01/1991 |
| 4938589 | Sensor with integrated signal processing for one- to three-dimensional positioning The sensor comprises a radiation source (2), optical elements (5), a pattern generator (4), and a sensor field (3) which includes a plurality of distinguishable, measurable points. The pattern generator (4) changes the beam reflected from an object (8), i... | 07/03/1990 |
