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| Number | Title | Issue Date |
| 8151476 | Illuminated device for checking an orientation to horizontal An illuminated device for checking an orientation to horizontal, comprising an elongated flat surface for engaging a surface of an object; at least one bubble level disposed in relation to the elongated flat surface to facilitate indicating when the elongated flat s... | 04/10/2012 |
| 7900366 | Illuminated level A longitudinally-elongated, hand-held level includes a body having a reference surface, a longitudinally-extending corner adjacent the reference surface, and a plurality of bubble vials for indicating an orientation of the reference surface. One or more battery-powe... | 03/08/2011 |
| 7350305 | Laser activated audible signal emitting leveler This invention pertains to the leveling device applying the optical interaction between a laser beam and a freely floating air bubble confined in a transparent, liquid-filled vial. When the air bubble is impacted by the laser beam, the curved surface of the air-bubb... | 04/01/2008 |
| 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 |
| 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 |
| 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 |
| 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 |
| 7117608 | Spirit level A spirit level comprising a body having a level face for setting a surface, at least one bubble vial mounted in the body, the bubble vial having a longitudinal axis generally perpendicular to the level face, and an optical transfer element fixed to the body which tr... | 10/10/2006 |
| 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 |
| 7089676 | Attaching level A level is provided with magnets spaced along the length of the level. The magnets function to secure the level to objects such as metal studs, metal beams, metal doorframes and the like when adjusting the attitude of such objects. A spring assembly is provided for ... | 08/15/2006 |
| 7086166 | Spirit level with integrated inclination adjustment mechanism The present spirit level has an elongated body with a longitudinal leveling face and at least one inclination peg retractably mounted in the body. The inclination peg is configured to selectably extend at least partially out from the leveling face by at least one pr... | 08/08/2006 |
| 7024781 | Vial illumination feature for a tool such as a level A vial illumination feature for a tool, such as a level, is configured so as to emit light toward a vial when the tool is used in a darkened environment. The vial extends across an opening or a space defined by the tool, and one or more vial retainer members engage ... | 04/11/2006 |
| 6877242 | Illuminated caliper instrument An illuminated caliper device includes a caliper assembly having first and second caliper legs each having a pointed tip and a pivot end. A pivot support and first and second pivot elements pivotally connects the pivot ends of the first and second caliper legs to th... | 04/12/2005 |
| 6851200 | Reflecting lighted level A reflecting lighted level (10) for facilitating leveling of an object, the reflecting lighted level (10) broadly comprising a generally frustoconically-shaped vial (12) having first and second exterior surfaces (22,24) and an internal an... | 02/08/2005 |
| 6748665 | Illuminated spirit level This invention describes an illuminated spirit level that can be used in an aircraft to determine aircraft attitude as well as aircraft direction. The invention essentially comprises three levels arranged in the shape of a cross with bubble vials in each of the left... | 06/15/2004 |
| 6115928 | Fiber optic position indicator using liquid/air light transmission The present invention relates generally to a new fiber optic position indicator. More particularly, the invention encompasses a fiber optic position indicator that uses liquid/air light transmission. A method for making such a fiber optic position indicat... | 09/12/2000 |
| 5761818 | Digital inclinometer An inclination measuring apparatus including a level for measuring the inclination of an object; an LED for creating an image of the level; and a photodiode array for sensing the image of the level and for generating a level signal representative of the i... | 06/09/1998 |
| 5361503 | Accessory for carpenter levels An accessory for addition to a standard carpenter's level includes: a light source fastenable into the finger slot common to such levels and fiber optic, light-transmitting tubes extending from the light source to illuminate the bubble vials of the level.... | 11/08/1994 |
| 5199177 | Level A lighted level including a frame having parallel working surfaces and an inner connecting web having an aperture with a pair of notches for supporting a liquid-containing vial. The level includes a light emitting diode for illuminating the vial. The leve... | 04/06/1993 |
| 5180221 | Apparatus and method for illuminating a liquid filled container An illuminated liquid filled container preferably for construction applications to provide a lighted level, has a liquid filled leveling container with an associated source of illumination. The liqud filled containers includes a light source to illuminate... | 01/19/1993 |
| 5075978 | Illuminated spirit level An illuminated spirit level comprising an elongated bar having a number of apertures wherein bubble tubes are positioned for measurement of the flatness of a surface. An illumination means including lamps, a system of conductor wires, a dual battery confi... | 12/31/1991 |
| 5025567 | Illuminated spirit level using fiber optic devices An illuminated spirit level containing fiber optic cables for the transmission of light from the self contained light source to the level vials is disclosed. The lighting system provides for several improvements over other such devices, including a light ... | 06/25/1991 |
| 5020232 | Illuminated level The bubble vials of a carpenter's level are individually illuminated by a respective light emitting diode (LED) energized from a battery supported within the body of the level. Charge on the batteries is maintained by one or more solar cells mounted on an... | 06/04/1991 |
| 4956922 | Bubble inclination gauge including a central shield for light-emitting and light-detecting means Inclination gauge having a reservoir filled with liquid and containing a gas bubble. The position of the gas bubble is detected by light detecting devices by which light going through the completely filled tube has a different convergent nature than light... | 09/18/1990 |
| 4912854 | Cross vial liquid bubble illuminated level The liquid indicating leveling device consists of a modular unit having four walls each at 90° to one another, the inside surfaces of the walls having a flat non-reflective white surface together with a white back wall and having an open viewing front de... | 04/03/1990 |
| 4876798 | Level with illuminated bubble vials An illuminated level includes a main frame providing parallel spaced-apart flat plane working surfaces connected together by a flat main frame web. The web is provided with three main frame sight ports extending therethrough. A bubble vial is positioned a... | 10/31/1989 |
| 4833788 | Univeral level light adapter A spirit level light adapter assembly having a housing which is securable to a spirit level. The adapter has a pair of flexible, resilient, light supports which are extendable from an opening at each end of said housing. The housing contains a battery, a ... | 05/30/1989 |
| 4745687 | Level indication device and method for providing a level indication of up to three degrees accuracy A level indicating device used to indicate proper orientation of a recreation vehicle (RV) such as a motor home, trailer, or camper. The device comprises of a generally transparent dome fixedly mounted on a base which can be removeably attached to a gener... | 05/24/1988 |
| 4484393 | Illuminated spirit level An illuminated spirit level comprises a bubble tube mounted in a support body with light source shielded to define two light paths directed through the bubble tube to apertures on the outside of the support body so that with the bubble positioned centrall... | 11/27/1984 |
| 4407075 | Illuminated spirit vial and level A tubular-shaped spirit vial is provided which is capable of being illuminated at its ends, offering improved observation of the spirit bubble location. The spirit vial has particular application in carpenter's and other tradesperson's levels providing gr... | 10/04/1983 |
| 4392184 | Illuminating method and apparatus for carpenter's or mechanic's levels This invention is a unique method and apparatus for illuminating carpenter's and mechanic's levels so that true readings may be obtained and the like, in shaded areas or under poor lighting conditions. The method and apparatus are characterized by the ins... | 07/05/1983 |
