Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 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 |
| 7288032 | Putting training device A golf putting training device that indicates the proper aim point on sloped putting surfaces such as golf course greens and compensates for the slope of the various putting surfaces. The device comprises a platform supporting one or more spirit levels. The device c... | 10/30/2007 |
| 7254920 | Tile-leveling device A device for setting and leveling tile is provided that comprises an elongated straight edge. The straight edge includes a horizontal tile support flange and a vertical flange. A support leg is adjustably attached to the vertical flange adjacent each end of the stra... | 08/14/2007 |
| 7155834 | Laser alignment method and apparatus Laser alignment methods and apparatus are disclosed whereby pipe and similar materials may be aligned. The methods and apparatus are adapted to be utilized on the end of pipe or other material and thereby using as a reference point that pipe or other material with t... | 01/02/2007 |
| 7152335 | Omnidirectional torpedo level having magnetic mounts and adjustable protractor An omnidirectional torpedo level composed of non-ferrous material has a central web and parallel side flanges defining a torpedo level geometry. The central web and side flanges define windows within which are mounted vertical and horizontal tubular spirit level ele... | 12/26/2006 |
| 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 |
| 7047659 | Multi-task promotional apparatus A promotional apparatus includes a housing having first and second openings and an elongated slot formed therein. A first measuring tape is disposed within the housing, and is retractably extendable from the housing via the first opening. A second measuring tape is ... | 05/23/2006 |
| 6681494 | Bubble level A bubble level (10) comprises a base (12) and a vial (14). The vial (14) includes two inwardly sloped outwardly bowed interior side-walls (44) and a top exterior surface (36). The interior side-walls (44) are aligned at an approximately forty-five degree ... | 01/27/2004 |
| 6599045 | Height measuring level pen/pencil A level pen/pencil or other writing instrument is equipped with an end-mounted level vial which mates with the pen/pencil barrel. The housing of the level is entirely clear allowing for the bubble of the level to be visible from all sides of the pen/penci... | 07/29/2003 |
| 5887783 | Level-indicating pizza box A disposable foldable rectangular cardboard pizza box has a lid portion having a denoted center which receives a domed spirit level. The spirit level, preferably secured to the box by contact adhesive, facilitates manipulation of the box to a horizontal p... | 03/30/1999 |
| 5778544 | Combined right-hand/left-hand horizontal headlamp indicator device A non-handed headlamp position indicator device is used to denote the proper aiming or "zero position" of a movable reflector component mounted in a stationary component of a headlamp arrangement so that a vehicle mechanic can easily return the headlamp i... | 07/14/1998 |
| 5604987 | Laser level, accessories and method of use A support for a laser beam generator in a carpenter's level is positioned on the level so that the laser beam generated will lie in the plane of a flat reference surface of the level. A battery or other power supply is housed in the carpenter's level toge... | 02/25/1997 |
| 5492322 | Green reader device A green reader device including a clear body having a horizontal line and a vertical line formed thereon and a bubble level affixed to the body. The horizontal line and the vertical line extend in intersecting relationship. The bubble level serves to indi... | 02/20/1996 |
| 5403001 | Golf putting aid device and chart A putting aid device for aiding a golfer in reading a putting green by measuring the direction and amount of slope in a green and indicating to the golfer a putting variance factor for a particular ball lie relative to a ball hole. The putting variance fa... | 04/04/1995 |
| 5359499 | Vertical/horizontal indicator for a vehicular headlamp The reflector of the headlamp is pivotally supported within a housing for vertical tilting about a horizontal axis and for horizontal pivoting about a vertical axis. A bubble level is carried by the reflector and may be adjusted relative thereto to a leve... | 10/25/1994 |
| 5233760 | Angular measuring mechanism A module for measuring level, plumb and various angles by a simple hand manipulation. The module, which contains a bubble in a vial, is in one modality located in a carpenter's leveling bar and is slidable therein so that it may always be oriented at eye ... | 08/10/1993 |
| 5003699 | Level vial with extender pitch range A level vial for use in connection with a level instrument for determining angular relationships wherein the geometry of the internal vial components and, in particular, the bore and core surfaces co-act with the bubble to produce a level vial having an i... | 04/02/1991 |
| 4934706 | Combination lie and shaft position indicator A golf training aide is attached to a golf club shaft and visually indicates to the golfer when the club shaft is held in a vertical plane and when the club head is held in proper angular relation to the ground. An indication of vertical alignment of the ... | 06/19/1990 |
| 4559714 | Pitch measuring apparatus A pitch measuring device for measuring the deviation of one line or plane from a referenced line or plane. The device comprises a pitch vial including a cavity containing a liquid and a bubble hermetically sealed therein. Indicia, pre-calibrated to the ax... | 12/24/1985 |
| 4482155 | Golf club alignment indicator apparatus An improved golf club alignment indicator apparatus, in which a hemispherical bubble level indicator is attached to the handle grip end of the golf club. The indicator is marked with various indicia so as to provide a golfer with the line of aim to the ta... | 11/13/1984 |
| 4422243 | Dual axis capacitive inclination sensor A dual axis capacitive inclination sensor includes a flat cylindrical vial defined by a lower conductive half and an upper dielectric half with a chamber therebetween containing a dielectric liquid with a bubble therein. A top surface of the upper half ha... | 12/27/1983 |
| 4419833 | Composite level construction A level or pitch measuring instrument of composite metal and plastic construction. A metal frame or base of T-shaped cross-section includes a first planar working surface and an upstanding web portion. Means are provided for mounting vials in the web in p... | 12/13/1983 |
| 4347088 | Bubble tubes for spirit levels A method for manufacturing a bubble tube for a bubble level, comprising the following stages: completely filling a barrel-shaped machined cavity (9) in the tube with suitable liquid such that the entire hollow part of the bubble tube is full; positioning ... | 08/31/1982 |
| 4139287 | Projector leveling and focusing aid and method of using same A slide body of a rigid transparent material is sized to be received within a slide transparency projector. The slide body includes a bubble level indicator having a narrow arcuate chamber which is filled with a liquid to create a bubble of air trapped wi... | 02/13/1979 |
| 4100681 | Picture frame leveling device An inexpensive spirit level having means for easy attachment to upper surface portions of picture frames or the like. The device comprises a transparent tape having blister-like cavities at regular intervals, a base tape affixed in face-to-face relation a... | 07/18/1978 |
