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 |
| 7222756 | Self-contained, portable and automatic fluid dispenser A fluid dispenser includes a housing, a sleeve reservoir and a container. The housing has a nozzle for dispensing the fluid and contains a power source, an infrared sensor, an integrated circuit chip and a pump assembly. The pump assembly includes a motor, at least ... | 05/29/2007 |
| 6047902 | Road marking machine with a pump combination driven in proportion with the traveling speed A road marking machine comprising a spray gun and a combination of two displacement pumps for supplying the marking substance to the spray gun, wherein the combination is driven in proportion with the traveling speed and wherein the pumps, each after star... | 04/11/2000 |
| 4779776 | Seeding device A seeding device to dispense seed suspended in a gel or other carrier medium in either a continuous stream or discrete pulses. A coulter opens a furrow of earth to the proper depth and seed carried in a gel or other suspension medium is delivered in a pul... | 10/25/1988 |
| 4632284 | Seeding device A seeding device to dispense seed suspended in a gel or other carrier medium in either a continuous stream or discrete pulses. A coulter opens a furrow of earth to the proper depth and seed carried in a gel or other suspension medium is delivered in a pul... | 12/30/1986 |
| 4471713 | Floor treating apparatus Floor treating apparatus, principally for waxing floors includes a drip pan to catch wax from the applicator pad when the applicator head is in a retracted position. A piston pump has an adjustable variable stroke to provide selection of the quantity of w... | 09/18/1984 |
| 4436230 | Arrangement for pulsation-free feeding of a liquid medium A device for providing pulsation-free feeding of a liquid medium from a supply container to a consuming device for use in a road-marking machine is disclosed. Two statically-operating reciprocating-piston pumps are arranged between the supply container an... | 03/13/1984 |
| 4109865 | Tractor spray cylinder attachment A spray attachment for a tractor to disperse and spray liquid pesticides, fertilizers, or the like. The spray attachment includes a cylindrical tank having a pair of wheels secured to each end thereof. Each wheel includes a series of pistons spaced about ... | 08/29/1978 |
