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 PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 6001047 - Safe baby walker
US Patent Issued on December 14, 1999
Estimated Patent Expiration Date:
March 5, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
March 5, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA stationary baby walker is provided including a stationary frame. A baby seat is movable along the frame and rotatable for allowing a baby to walk along a path, turn around, and again walk along the path. | InventorApplicationNo. 036432 filed on 03/05/1998US Classes:482/66, Occupant propelled support frame having movement facilitating feature for foot travel280/87.051, Baby walker297/5WITH OCCUPANT-PROPELLED WALKER OR SKATER FRAMEField of Search482/51, INVOLVING USER TRANSLATION OR PHYSICAL SIMULATION THEREOF482/66, Occupant propelled support frame having movement facilitating feature for foot travel482/67, Armpit engaging482/68, Rolling482/69, Occupant suspended from above (e.g., by a body harness, etc.) for foot travel434/255, Traversing ground (e.g., crawling, running, etc.)472/15, Trainer for foot travel (e.g., for walking, skating, etc.)472/14, Occupant propelled297/5, WITH OCCUPANT-PROPELLED WALKER OR SKATER FRAME297/344.24, Having additional movement in horizontal plane297/136, Seat supported within periphery of apertured table297/137, Seat rotatable about vertical axis297/138, Seat movable along table-mounted horizontal track280/87.051Baby walkerExaminersPrimary: Donnelly, JeromeAssistant: Hwang, Victor K. US Patent References150398, 761514, 839681, 841700, 875377, 1154543, 1294300, 1297800, 1419890, 2766464, 4043552, Exerciser seatIssued on: 08/23/1977 Inventor: Kerkonian 5522782 Foreign Patent References
International ClassA47D 013/04 |
