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 |
| 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 |
| 7278220 | Plumb bob with adjustable weights A plumb bob with adjustable weights for suiting different applications is disclosed that includes, in one embodiment, a bottom point; a shank extended upward from the point and having a lower portion and an upper threaded section; hollow first weight elements adapte... | 10/09/2007 |
| 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 |
| 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 |
| 6941666 | Forklift mast position indicator A device which is attachable to the mast of a forklift for indicating to the forklift operator the tilt angle of the mast in a vertical plane centered on the forklift includes a pivotably supported weighted pendulum, and an elongated activating arm secured to the up... | 09/13/2005 |
| 6098025 | Apparatus and method for calibrating moment-of-inertia and center-of-gravity An apparatus and a related method are used to simultaneously calibrate a center-of-gravity and a moment-of-inertia. The apparatus includes: a motor rotated with a prescribed velocity; a tachometer installed at the motor for calibrating an angular velocity... | 08/01/2000 |
| 5974676 | Low profile plumb bob assembly A plumb bob assembly including a plumb bob for use adjacent to a wall or other vertical surface, a cord, cord spool attachable to the plumb bob for storage and a tip cover. A pencil may be inserted through a vertical slot in the plumb bob body to mark the... | 11/02/1999 |
| 5461791 | Apparatus and method for rotationally positioning a rotor A method for rotationally positioning a rotor for balancing procedures uses an instrument within a housing that is temporarily mounted to the axial face of a rotor for determining rotational locations with respect to a reference mark located on the rotor.... | 10/31/1995 |
| 5001682 | Method and apparatus for detecting seismic events A seismographic sensor is constructed from a D'Arsonval movement. The elements of the movement include a coil suspended in the field of a permanent magnet and a pointer attached to the coil. A weight is attached to the pointer and acts as an inertia eleme... | 03/19/1991 |
| 4843725 | Gravity-biased level apparatus A level for determining whether a surface is horizontal and which can also be used to determine the angular relationship between the surface or a line on the surface and the horizontal. The level utilizes a rotating pendulum designed with a pointer that i... | 07/04/1989 |
| 4824114 | Golf putter with slope indicating means therein A golf club putter is disclosed for use on a golf green for judging the desired path to the cup. The putter comprises a shaft with a putter head secured on one end thereof. The putter has a vertically oriented striking surface for striking a golf ball on ... | 04/25/1989 |
| 4430804 | Device for setting inclination A device for setting the inclination of a reference object such as a mirror or the like, used as a reference for lining up, levelling in, etc. The mirror (10) is rotatably balanced about an axle (12) and a portion thereof below said axle is provided with ... | 02/14/1984 |
| 4368581 | Bow sight A sight for hunting bows possesses an automatic range finding capability when the hunter is stationed at an elevated position and is infinitely adjustable and lockable to facilitate ground level hunting. A greater range of adjustability enables the sight ... | 01/18/1983 |
| 3938255 | Cantilever-type inclinometer Apparatus for determining the inclination of a well bore comprising a flexible rod having an upper end rigidly supported by the apparatus and a needle point means operatively connected with the lower end of said rod and suspended over a vertically movable... | 02/17/1976 |
