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 |
| 5888328 | Weld integrity test kit A kit for testing the integrity of sterile tubing welds made by a sterile tubing welding machine employing welding wafers includes a plurality of tubing samples, and a container having a series of receptacles for holding the tubing samples and the wafers ... | 03/30/1999 |
| 5642743 | Pressurized closed flow cleaning system A pressurized closed flow cleaning system for cleaning the interior surface of industrial processing equipment. The system includes a pressure vessel containing an aqueous cleaning solution including the combination of enzymes and a surfactant. A supply c... | 07/01/1997 |
| 5612326 | Methods containing vitamin D compounds for improvement of skin conditions Homologated Vitamin-D compounds used to treat skin conditions by oral or parenteral administration.... | 03/18/1997 |
| 5606640 | Towel warming cabinet with heated air from attached hair dryer circulating through towel rack and downwardly over the towel An apparatus for warming a towel or other article includes a cabinet having an open top and closed by hinged lid and a hollow rack is mounted within the cabinet. A towel to be warmed is draped over the rack. A portion of heated air is introduced through a... | 02/25/1997 |
| 5534303 | Coating solution for treating basement walls A solvent mixture of a petroleum distillate and toluene is disclosed. The solvent is used to dissolve a hydrocarbon resin and block copolymers of styrene and isoprene or styrene and butadiene and the solution is applied to newly constructed basement walls... | 07/09/1996 |
| 5265700 | Lubrication for crankpin bearing of connecting rod A connecting rod for connecting a reciprocating piston to a rotating crankshaft of an internal combustion engine includes an improved lubrication distribution system for conveying lubrication into its crankpin bearing. The lubrication is distributed by me... | 11/30/1993 |
| 5194431 | 24-cyclopropane vitamin D derivatives Vitamin D2 analogs in which a cyclopropane ring is introduced onto the 24-carbon of the side chain of 1,25-dihydroxyvitamin D2 and 1-hydroxyvitamin D2. The compounds are characterized by a marked intestinal c... | 03/16/1993 |
| 5071652 | Metal oxide hydrogen battery having improved heat transfer properties A metal oxide-hydrogen battery including an outer pressure vessel that contains a plurality of cell modules disposed in side-by-side relations. Adjacent cell modules are separated by heat transfer members that transfer heat from the cell modules to the ou... | 12/10/1991 |
| 5071030 | Adhesive label separator An adhesive label separator has an edge for abruptly changing the path of the backing paper to achieve separation of the label from its backing paper. A mechanism is provided for adjusting the height of the edge to accommodate different sizes of labels, a... | 12/10/1991 |
| 5059067 | Method for forming a curved interior profile to a cementitious material A method for forming cementitious material, such as gunite or the like, to a desired cross-sectional profile for an interior structure such as a swimming pool, skateboard bowl or the like. A forming assembly includes a cutting edge, which is formed so as ... | 10/22/1991 |
| 5049122 | Apparatus for stripping scrap from die cut blanks An apparatus for stripping the scrap portion from a die cut blank includes a stripper pin carrier providing a pattern of stripper pins supported in a resilient compressible material layer in which the stripper pins are demountably embedded. The stripper p... | 09/17/1991 |
| 4986774 | Desmodromic shift adaptor for a counter-rotating propeller shaft assembly An adaptor member for accommodating use of a desmodromic cam-actuated shifting mechanism into a conventional propeller shaft cavity formed in the lower end of the gearcase of a marine propulsion system, wherein forward thrust on the propeller shaft is tra... | 01/22/1991 |
| 4979560 | Heat exchanger with stationary turbulators A heat exchanger for various kinds of liquid and gaseous fluids includes a tubular conduit having a corrugated heat exchanging outer wall and a stationary baffle and turbulator plate mounted inside each corrugation. The turbulator plates divert the fluid ... | 12/25/1990 |
| 4971582 | Fuse clip reject member A reject type fuse clip for use with a cartridge type fuse having a grooved ferrule includes a fuse clip having a pair of upstanding clamping arms and a reject member disposed therebetween. The upstanding clamping arms of the fuse clip are provided with a... | 11/20/1990 |
| 4971532 | Oil metering pump with air purge A mechanical lubricating oil pump (126) includes a pump body (140) having a cylindrical chamber (142) and a reservoir (150) with an oil supply input (196) supplying oil from an oil tank (114) to the reservoir. A cylindrical rotator (144) is driven by a ge... | 11/20/1990 |
| 4969428 | Hypereutectic aluminum silicon alloy A hypereutectic aluminum silicon alloy having an improved distribution of primary silicon in the microstructure. The alloy is composed by weight of 20% to 30% silicon, 0.4% to 1.6% magnesium, up to 1.4% iron, up to 0.3% manganese, 0.25% copper maximum and... | 11/13/1990 |
| 4966220 | Evaporable foam casting system utilizing a hypereutectic aluminum-silicon alloy A method of casting utilizing an evaporable foam system with a hypereutectic aluminum silicon alloy. The molten alloy is introduced into a mold in contact with an evaporable foam pattern formed of polystyrene, or the like. The heat of the molten alloy wil... | 10/30/1990 |
| 4966347 | Outboard motor retainer A retainer for a transom-mounted outboard boat motor is mounted on the inside face of the transom generally surrounding the area where the clamping thumb screws of the motor mounting bracket engage the transom. The retainer includes a retaining lip defini... | 10/30/1990 |
| 4964385 | Engine overspeed control In a multicylinder internal combustion engine, an overspeed control circuit progressively cuts out ignition to the cylinders depending upon the amount the threshold is exceeded. A monostable multivibrator is set by the ignition pulse of a given cylinder t... | 10/23/1990 |
| 4815427 | Fuel enrichment system A fuel enrichment system for a multi-cylinder engine having a manifold balance line to deliver fuel to each of the cylinders as needed includes a valve located adjacent one of the carburetors to supply additional air/fuel mixture to approximately the cent... | 03/28/1989 |
| 4701996 | Method for fabricating edge channel FET Edge channel FET structural geometry and processing is disclosed. A plurality of mesa stacked horizontal layers are provided including source and drain semiconductor layers (74, 76) separated by an insulator layer (75) and having exposed edges (78, 80) at... | 10/27/1987 |
| 4335549 | Method, building structure and side-split block therefore A composite module (14) is formed by a specially constructed mold (65) and division plate (80) to form plural splitting planes (28, 31, 33, 51, 54, 56) in the composite module which is thereafter split by a series of knives (114-116, 121-123, 126, 127) al... | 06/22/1982 |
