Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 6922901 | Light leveling device having remote control A light leveling device includes a stationary light instrument received in a housing, and a rotatable light instrument rotatably attached to the housing, to allow the rotatable light instrument to be rotated and adjusted relative to the housing and the stationary li... | 08/02/2005 |
| 6902329 | Method and apparatus for the integration of parallel optical transceiver package A tool and method for the alignment and placement of optoelectronic devices with attached fiber optic connectors onto the electronic interface substrate of a parallel optical transceiver package. The optoelectronic devices are connected to the substrate through a fl... | 06/07/2005 |
| 6877236 | Optical measuring device system and method The present invention relates to an optical measuring devices and method of using the device. The optical measuring device utilizes a plurality of lasers attached to a plurality of interconnected legs to optically determine CENTER, LEVEL, LENGTH, DISTANCE, and PLUMB... | 04/12/2005 |
| 6601309 | Apparatus for marking by light planes a corner angle in a work area A system for marking a corner angle in a working area with the aid of light planes, wherein a straight, elongate guide is disposed on each respective side of a planar working surface in the working area. Each guide carries a carriage that can be moved to ... | 08/05/2003 |
| 6501536 | Method and apparatus for determining the location of an occupant of a vehicle A method and apparatus for use in locating the eyes of a vehicle driver or passenger in a vehicle for controlling vehicle systems including the positioning of vehicle sideview mirrors in relation to the driver's eyes to maximize the view of traffic on eit... | 12/31/2002 |
| 5933393 | Laser beam projection survey apparatus with automatic grade correction unit A laser beam projection apparatus includes a light source, a vessel containing a transparent liquid which transmits a light beam from the light source and has a free liquid surface, a condensing optical member for condensing the light beam transmitted thr... | 08/03/1999 |
| 5231539 | Nodal-point adjusting retroreflector prism and method Methods and apparatuses are disclosed for setting the nodal point of a retroreflector such as a corner-cube prism. The apparatuses permit rotation of the retroreflector about a stationary first pivot axis and motion of the retroreflector along its optical... | 07/27/1993 |
| 4889425 | Laser alignment system A system for monitoring changes in shape of a structure employs a laser source attached to the structure and a set of beam splitters mounted at various locations on the structure and arranged to route portions of a laser beam produced by the laser source ... | 12/26/1989 |
| 4470664 | Reflector device for use with optical distance measuring apparatus A reflector device for use with an optical distance measuring apparatus which includes a frame carrying a reflecting element such as a corner cube type prism and a holder for mounting the frame. The frame has a reference surface and the holder has two or ... | 09/11/1984 |
| 3978590 | Sighting device for luminaire positioning Disclosed is a device for facilitating the calibration and setting of the inclination angle of a luminaire by sighting from the rear of the luminaire to a set of points such as the opposite curb of a roadway. The device may be placed on or permanently sec... | 09/07/1976 |
