"Everyone acquainted with the subject will recognize it as a conspicuous failure."
Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
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| Number | Title | Issue Date |
| 8181354 | Inclination position sensor and inclination position sensor manufacturing method An inclination position sensor where, on a substrate on which wires are formed, plural electrodes electrically connected to the wires are disposed, a conductive ball that can simultaneously contact at least two of the plural electrodes is disposed, an enclosure that... | 05/22/2012 |
| 7987607 | Inclination sensor The inclination sensor (A1) according to the present invention includes a pair of light receiving elements (4A, 4B), a light emitting element (5) for directing light to the light receiving elements (4A, 4B) and a case (2 | 08/02/2011 |
| 7937846 | Inclination position sensor and inclination position sensor manufacturing method An inclination position sensor where, on a substrate on which wires are formed, plural electrodes electrically connected to the wires are disposed, a conductive ball that can simultaneously contact at least two of the plural electrodes is disposed, an enclosure that... | 05/10/2011 |
| 7921573 | Monitoring verticality of a sinking caisson A method of monitoring verticality of a sinking caisson having a tip. A pole is inserted into the earth to a pole depth substantially corresponding to a desired final depth of the caisson tip, one or more levels are coupled to the pole, and an elevation of the level... | 04/12/2011 |
| 7866055 | Level provided with impact-absorbing end caps The present invention provides a level having a body which has a first end, a second end opposed to the first end, and a plane surface which connects the first and second ends, at least one level indicating device mounted to the body, and two end caps which are moun... | 01/11/2011 |
| 7845086 | Inclination sensor The inclination sensor (A1) according to the present invention includes a pair of light receiving elements (4A, 4B), a light emitting element (5) for directing light to the light receiving elements (4A, 4B) and a case (2 | 12/07/2010 |
| 7832112 | Vial-mounting structure A level including an elongate hollow frame with two sidewalls and a topwall extending therebetween, a topnotch defined by the walls which have notch-defining edges including non-vertical surfaces, and a vial within the topnotch. A vial-mounting structure includes a ... | 11/16/2010 |
| 7770298 | Securement arrangement for a level end cap An end cap feature for a level includes a frame having a gauging surface and a web which extends at an angle relative to the gauging surface. The web includes a recess adjacent to an end of the frame. The web recess opens onto the end of the web and extends inwardly... | 08/10/2010 |
| 7536797 | Spirit level The invention relates to a spirit level comprising a spirit level body (10) which is made from a spray-injected thermoplastic material with at least one recess (22) for a spirit level. In order to embody the spirit level body (10) such that it i... | 05/26/2009 |
| 7409772 | Apparatus and methods for level and/or straight edge tools The present invention is directed generally to tools that are lightweight, high quality, durable, rigid and strong. For example, various tools used to level items and/or as a straight edge for aligning or drawing lines on items may be designed in an improved or augm... | 08/12/2008 |
| 7377046 | Inclination sensor and azimuth measuring apparatus using inclination sensor A mobile device or the like having a 3-axis electronic compass is rotated, and the outputs from magnetic sensors disposed in the three axis directions are input to a first arithmetic processing unit (11) so as to obtain the magnetic data X, Y, and Z. By input... | 05/27/2008 |
| 7363719 | Pocket level A pocket level having a detachable line level whose bubble vial doubles as the pocket level's horizontal bubble vial, and an angle finder for enabling the determination of the angle of an inclined surface which includes a bubble vial housed in a wheel rim directly r... | 04/29/2008 |
| 7360316 | Level The level of the invention consists of a solid, thin central web that is connected to an upper box and a lower box. The central web supports level vials. The upper box and lower box have a hollow generally polygonal shape and define an upper surface and lower surfac... | 04/22/2008 |
| 7340841 | Slope level A slope level for measuring the slope of a surface is provided. The slope level includes a body having a front face and a back face and defining a first planar measurement surface. A transparent arced tube is disposed on the body. The arced tube has a first end and ... | 03/11/2008 |
| 7313871 | Archery sight An improved laser sight apparatus that is capable of identifying and impinging several different targets at varying ranges from the shooter. In the preferred embodiment, the laser sight according to the present invention includes three lasers, each of which is pre-c... | 01/01/2008 |
| 7281335 | Carpenter's level A level assembly includes a main level with a base wall, end supports at opposite ends of the base wall and at least one intermediate support extending from the base wall at a location between the end supports. Bubble tubes may be mounted in the end supports and/or ... | 10/16/2007 |
| 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 |
| 7263778 | High contrast spirit-level vial A spirit-level vial comprising a transparent vessel containing a globule of a first liquid suspended in a medium comprising a second liquid, wherein said transparent vessel is essentially completely filled by said medium, and wherein said globule is capable of movin... | 09/04/2007 |
| 7249777 | Camber tube level A level on a wheelchair allows the cambered rear wheels to be easily adjusted to eliminate toe-in/toe-out. The level comprises a ball encased in a curved track. The curve track is formed in a clear housing that mounts to the underside of a wheelchair camber tube or ... | 07/31/2007 |
| 7243435 | Level device and method of calibrating a level vial The level device includes a level body having a pair of orthogonal reference surfaces. A vial carrier on the level body holds the level vial such that it can be calibrated with respect to the reference surfaces by rotation about a pair of orthogonal axes, each of th... | 07/17/2007 |
| 7243431 | Trailer hitch alignment device The invention is a trailer hitch alignment device that synergistically combines a laser level with an alignment mounting bracket, where the bracket, using a fastening means, provides a base on a vehicle for affixing the laser level to a vehicle. The laser level prov... | 07/17/2007 |
| 7243433 | Laser level with adjustable laser projection line A laser level with adjustable laser projection line comprises a support bracket, a housing, a switch, a laser generator which project a fanned laser beam to the surface of the work piece to form a line, and wherein a rotating mechanism is coupled to rotate the laser... | 07/17/2007 |
| 7228637 | Impact-absorbing end caps for levels An impact-absorbing end cap for an instrument such as a level is provided that is secured to an end of the level and has an outer portion and an intermediate portion. The intermediate portion is positioned between the outer portion and the body of the level and is s... | 06/12/2007 |
| 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 |
| 7171755 | Picture hanging level A level designed for use in hanging pictures is disclosed. The level is proportioned to be easy and convenient to use in conjunction with a picture frame, having a pair of perpendicular legs that can rest on a corner of a picture frame and a level vial positioned wi... | 02/06/2007 |
| 7168175 | Decorative frame molding A decorative frame molding includes a generally rectangular structure having a top, a bottom, a right side, a left side, a front side, and a back side. A recess is formed along the back side of the structure within which an adhesive may be placed in order to mount t... | 01/30/2007 |
| 7159325 | Bow sight with fiber optics A bow sight having a support structure, and two or more vertically aligned vertical pins connected to the support structure is provided. At least two of the vertical pins include a sight point. In accordance with another aspect of the invention, a bow sight having a... | 01/09/2007 |
| 7150107 | Structure and method for holding and protecting vials in levels A level and a method of forming such a level are disclosed. The level comprises a body having a measuring surface and a recess, a vial positioned in the recess at an angular relationship to the measuring surface, and a ring member enclosing the vial within the reces... | 12/19/2006 |
| 7150106 | Method of using a level A water or spirit level is composed of an elongated body, preferably of metal, at least one bubble mounted in the elongated body, and end caps, preferably of plastics material, at the end faces of the elongated body, wherein at least one outer surface of the elongat... | 12/19/2006 |
| 7137209 | Level and protractor A level and protractor tool (100) includes a body (102) with three sections. The first section (106) includes a spring clip (108) mounted on the body. The spring clip is adapted to be attached to an item that is to be bent or otherwise me... | 11/21/2006 |
| 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 |
| 7131209 | Apparatus for measuring horizontal level of a wafer chuck An apparatus for measuring a horizontal level of a wafer chuck, including a measuring part for contacting the wafer chuck to measure a horizontal level, a mounting part on which the measuring part is mounted, and a supporting part for supporting the mounting part. T... | 11/07/2006 |
| 7117606 | Pocket-sized leveling tool A leveling tool having: a body, including a first face and an opposite second face, the first and second faces defining a thickness between them, the body defining a first side surface, a second side surface opposite said first side surface, a first end surface, and... | 10/10/2006 |
| 7086167 | Overmolded vial for use with a level A vial for use in a level and a method of forming such a vial are disclosed. The vial includes a cylinder having an inner surface defining a cavity, and a material molded around the cylinder. The vial preferably includes at least one marker ring positioned between t... | 08/08/2006 |
| 7073270 | Impact-absorbing end caps for levels An impact-absorbing level is disclosed. The level comprises a body including a level face for measuring a surface, a vial mounted in the body at a predetermined angular relationship to the level face, and a first end cap fixed with respect to the first end, the firs... | 07/11/2006 |
| 7069661 | Laser leveling device having selectable light beam A laser leveling device includes a laser instrument disposed in a housing, a plate slidably received in the housing and a lens attached to the plate. The lens includes two or more portions having different patterns to generate different light beams when the laser in... | 07/04/2006 |
| 7069665 | Correcting foot alignment A component system of footwear corrective alignment insoles provides adjustment of the alignment of a human foot based upon evaluation and measurement of structural anomalies in the foot. A subtalar joint goniometer measures the angular alignment of the foot with a ... | 07/04/2006 |
| 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 |
| 7027480 | Laser level A laser level disposable on a reference surface includes a housing, a laser diode disposed within the housing for emitting a laser beam along a path, a lens disposed in the path for converting the laser beam into a planar beam. The planar beam thus forms a line on t... | 04/11/2006 |
| 7013570 | Stud finder A stud finder for a light generating device, having a surface and a connection structure on the surface to removably mount either a light generating device or a leveling device thereto. ... | 03/21/2006 |