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.
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| Number | Title | Issue Date |
| 5809970 | Backup control for natural gas fueled internal combustion engine An internal combustion engine is fueled with a controlled mixture of natural gas and air which mixture is regulated by a regulator responsive to an electronic controller. In the event of a system failure with the electronic controller shutting down, a bac... | 09/22/1998 |
| 5775599 | Gaseous fuel injector for internal combustion engine A gaseous fuel injector has a ball valve which is spring urged to a closed position. Positioned below this valve is the armature of an electromagnetic solenoid having an extension which abuts against the ball valve. The ball valve is normally closed again... | 07/07/1998 |
