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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6811729 | One piece reflective pavement marker and method of making A process of monolithically forming one-piece reflective pavement marker or delineator, including at least one retro reflective face. The process is based on molding the pavement marker or delineator with means to integrally form cube-corner reflective elements and ... | 11/02/2004 |
| D492907 | One-piece reflective pavement marker | 07/13/2004 |
| 6579036 | Reflective pavement marker and method of making A reflective pavement marker comprises an integrally molded one-piece structural body and at least one reflective plate attachment, said structural body having two opposing planar inclined reflective faces, multiple hollow cavities which are defined by pa... | 06/17/2003 |
| 6334734 | One piece reflective pavement marker and method of making A reflective pavement marker integrally molded in one piece structure having retroreflective face and structural body. The marker provide a mean to enhance agglutination to the roadway, if needed when bituminous based adhesive is used by maximizing the ba... | 01/01/2002 |
| 6267530 | Reflective pavement marker A reflective pavement marker having integrally molded one-piece structural body with multiple hollow cavities that are open only at the top reflective faces of the marker, two arcuate sides and integrally sealed planar base surface with textures and disco... | 07/31/2001 |
| 6264860 | Housingless abrasion resistant pavement marker A housingless abrasion resistance reflective pavement marker is disclosed. The marker includes a housingless, flat topped body and at least one reflective member encapsulated in the marker's body during casting. The body can be made of abrasion and impact... | 07/24/2001 |
