Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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 |
| 5419006 | Exhauster fan systems An exhauster fan system for a road sweeping machine comprises a rotatable fan, a drive, and a hydrostatic transmission system coupled between the drive and a spindle on which the fan is mounted. The output of the transmission system is controlled to apply... | 05/30/1995 |
| 5056615 | Vehicle control system This invention relates to improved control systems for vehicles which require power to prepare the vehicle itself and to drive auxiliary equipment mounted on the vehicle. A land vehicle has hydrostatic transmission to drive at least one roadwheel to prope... | 10/15/1991 |
| 4773119 | Road sweeping vehicles A suction type road sweeping vehicle includes a fluid coupling in the drive train between the auxiliary engine and the vacuum generating fan. The fluid coupling is mounted integrally with the engine flywheel and drives a step up gearbox. The flywheel, cou... | 09/27/1988 |
