Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7946044 | Surveying instrument and a method therefor A surveying instrument includes a measuring system having a component, a support, and a mounting unit that is arranged at the support. The component is mounted on the mounting unit and the support and the mounting unit are configured such that the mounting unit is a... | 05/24/2011 |
| 7861427 | Grade indicating device and method The application relates to indicating a grade for example in constructions applications using a laser beam. A laser beam is emitted from a laser unit to a desired direction having a grade angle with regard to a level angle. The level sensor is provided for adjusting... | 01/04/2011 |
| 7861426 | Optomechanical leveling device An optomechanical leveling device (1) has an external housing (2) with a bottom surface (4), a carrier frame (6) located inside the external housing (2) and fastened in an elastically damped manner by means of damping elements (... | 01/04/2011 |
| 7665217 | Laser level assembly This invention relates to a pendulum assembly within a laser levelling apparatus. In use, the assembly is rotatably mounted with the levelling device to hang under the effect of gravity such that opposed light emitting devices produce light on a horizontal plane. Th... | 02/23/2010 |
| 7637022 | Damping system and method for a pendulously supported crossline generator A damping system and method for a pendulously supported crossline generator is disclosed. The crossline generator comprises a support body pendulously supported and having ear portions and a paddle. A rotation damping device having cages each with a magnet set is pr... | 12/29/2009 |
| 7591075 | Self-leveling mechanism A level, particularly a laser level is provided with a chassis simultaneously pivotable in at least a first direction and a second direction under the influence of gravity and a housing surrounding at least a portion of the chassis. The chassis carries a first light... | 09/22/2009 |
| 7571546 | Light line generating device A light line generating device is configured to generate horizontal and vertical light lines on a work surface. The device includes a pendulum assembly, a pendulum lock mechanism, level indicator device, a light line generating assembly. The pendulum assembly includ... | 08/11/2009 |
| 7536796 | Laser marker To obtain a laser marker capable of effectively reducing an impact force applied to essential components of the laser marker including a gimbal mechanism, a light source unit holder, and a light source unit when the laser marker falls, and in particular, capable of ... | 05/26/2009 |
| 7523558 | Tool incorporating a light line generating device A tool incorporating a device that generates a light line on a work surface such as a wall is disclosed. The device includes a housing containing a self-leveling pendulum assembly and a light source that directs a light beam along a pathway. A redirection assembly, ... | 04/28/2009 |
| 7500317 | Portable self-leveling laser emitter with plumb beam A self-leveling laser emitter (1) has a portable housing (2) in which a beam unit (5) is mounted so as to be swivelable in two dimensions in a self-leveling manner at a bearing point (4) arranged in the area of one third to two thirds of ... | 03/10/2009 |
| 7493701 | Self-leveling laser apparatus and a method for controlling the same The present invention discloses a self-leveling laser apparatus, of which the pendulum can be locked, and a method for controlling the same. The self-leveling laser apparatus of the present invention comprises a housing, a pendulum hanging within the housing, at lea... | 02/24/2009 |
| 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 |
| 7392591 | Light line generating assembly An assembly for generating light lines on a surface is disclosed. The assembly may include a first housing coupled to a second housing. The first housing includes the first housing may include a first light source and a second light source capable of generating inte... | 07/01/2008 |
| 7373724 | Laser level with improved leveling adjustability A laser level includes a level-adjusting device and a laser transmitter device mounted on the level-adjusting device. The level-adjusting device includes a horizontal flat board movable by a plurality of motor modules to a desired condition, a cross rotatable circle... | 05/20/2008 |
| 7370427 | Tiltable construction laser A construction laser with at least one laser beam (4) defining a plane (3) has a laser unit (6) which is tiltable with respect to a housing (5) around at least one swiveling axis (9a) and includes at least one leveling senso... | 05/13/2008 |
| 7360314 | Leveling method and leveling device A leveling method in a device main unit with tilt sensors, wherein said method comprises a step of obtaining a response delay of said tilt sensors in advance, a step of tilting said device main unit in a first direction so that said tilt sensors detect a first 0 poi... | 04/22/2008 |
| 7352944 | Laser alignment device The present invention discloses a laser alignment device which has a simple structure, easy operation and economical utility, and which includes a casing, a laser emitting unit that is mounted in the casing and may emit a planar laser beam, a first mounting plane an... | 04/01/2008 |
| 7310886 | Laser level A laser level includes a housing, a pendulum pivotably mounted to the housing and a laser diode assembly disposed on the pendulum. A gimbal assembly is employed for pivotably mounting the pendulum to the housing. The gimbal assembly includes a frame connected to the... | 12/25/2007 |
| 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 |
| 7272891 | Automatic plumbing device This invention relates to an automatic or self plumbing device and method for maintaining survey or data collection or reflection equipment in a vertical plumb position despite horizontal and/or vertical changes of position of the device or vehicle with the device a... | 09/25/2007 |
| 7269907 | Laser line generating device with swivel base A laser alignment device includes a laser generating device, an upper attachment portion, and a lower attachment portion. The laser generating device includes a housing and a laser generator. The upper attachment portion is disposed near a bottom of the housing, and... | 09/18/2007 |
| 7260895 | Structure mountable assembly A modular tool assembly including a tool base configured to releasably secure a modular tool arrangement in a fixed relationship relative to a mounting surface. The tool base includes an upper housing portion and a lower housing portion having a mounting seal extend... | 08/28/2007 |
| 7228635 | Laser tilt apparatus and the method thereof The present invention discloses a laser tilt apparatus and the method thereof. The present invention comprises an input device, a tilt sensor, a motor, a microcontroller unit, and at least a laser module. The input device is used to input a tilt value. The tilt sens... | 06/12/2007 |
| 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 |
| 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 |
| 7204027 | Method and apparatus for determining reference levels and flatness of a surface A method and apparatus are presented for a laser tool used for direct indication of a level surface. This embodiment may also be used to transfer a level elevation from one level surface to a neighboring surface. The device may also be used to indicate the degree of... | 04/17/2007 |
| 7191532 | Modular tool assembly having a vacuum mounting arrangement A modular tool assembly including a tool base configured to releasably secure a modular tool arrangement in a fixed relationship relative to a mounting surface. The tool base includes an upper housing portion and a lower housing portion having a mounting seal extend... | 03/20/2007 |
| 7174648 | Structure mountable assembly A modular tool assembly including a tool base configured to releasably secure a modular tool arrangement in a fixed relationship relative to a mounting surface. The tool base includes an upper housing portion and a lower housing portion having a mounting seal extend... | 02/13/2007 |
| 7171756 | Construction laser with tiltable deflecting means A construction laser having a housing and a tilt part positioned within the housing. The tilt part includes a laser unit for generating a laser beam and a deflector for deflecting the laser beam. The tilt part is adjustable relative to the housing by an actuation el... | 02/06/2007 |
| 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 |
| 7134211 | Laser level A laser level includes a housing, a pendulum pivotably mounted to the housing and a laser diode assembly disposed on the pendulum. A gimbal assembly is employed for pivotably mounting the pendulum to the housing. The gimbal assembly includes a frame connected to the... | 11/14/2006 |
| 7134212 | 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... | 11/14/2006 |
| 7122819 | Method and apparatus for imager die package quality testing An apparatus and method of detecting a defect in an imager die package. The method comprises the steps of exposing the imager die package to light at a first angle, exposing the imager die package to light at a second angle, outputting electrical signals based on th... | 10/17/2006 |
| 7117111 | Adjusting method of a tilt meter The present invention provides an adjusting method of a tilt meter. First, multiple holding signals of the same direction output from a tilt sensor, respectively, are differentiated to obtain at least a tilt signal. Then, a first judging step is performed to determi... | 10/03/2006 |
| 7111406 | Laser calibration apparatus and method A laser calibration device includes a housing and a pendulum pivotally coupled to the housing and suspending downwards therefrom. A laser deck is mounted to the pendulum. At least one laser for emitting a laser line is mounted to the laser deck. The laser includes a... | 09/26/2006 |
| 7108213 | Fishing reel, fishing information display device, and fishing information display system An electric reel is furnished with an information communication unit is adapted for transmitting first information concerning the reel to an external fishing information display device. The information communication unit is adapted for receiving second information c... | 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 |
| 7073269 | Self-leveling laser alignment tool and method thereof 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... | 07/11/2006 |
| 7059057 | 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, and a lens disposed on the pendulum in the first path ... | 06/13/2006 |
| 7059058 | Rotational constructional laser A rotational construction laser includes a housing (17) a laser unit (4) located in the laser housing (17), a device (5) for rotating, at least segmentwise, a laser beam (2) of the laser unit (4) within a rotational plane (R... | 06/13/2006 |
