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 |
| 7232085 | Diverter and chopper valve for an air conveyed continuous strip of material A diverter valve housing has two outlets and one inlet for receiving a flow of air conveying a continuous strip of material, and a diverter duct or tube is pivotally supported within the housing on a pivot axis adjacent the inlet. The diverter tube has an outlet end... | 06/19/2007 |
| 7047676 | Rotational and positionable arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus A novel rotational and positionable robotic arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus, wherein the interchange is effected underwater by rotation of a common deploying arm and remote-c... | 05/23/2006 |
| 5802747 | Crusher A driving device of a jaw crusher of attachment type comprising a hydraulic cylinder having a rod connected with a movable member; a hydraulic source provided on a body of a hydraulic excavator having a mobile travel device; and a control mechanism for su... | 09/08/1998 |
| 5651200 | Debris exclusion devices for an augerhead type hydraulic dredge system The present invention pertains to debris exclusion devices designed for use on a small augerhead type hydraulic dredge system for operations in debris laden channels that can cause the system's pump to malfunction. Debris to be excluded by these devices i... | 07/29/1997 |
| 5146699 | Auger dredge specially adapted to removal of toxic sediment An auger dredge for removing toxic sediments wherein turbidity is minimized by attaching to the dredge a frame which first dislodges the material and feeds it to the auger for eventual transfer to a disposal site. Because the auger does not touch the dred... | 09/15/1992 |
| 4403428 | Suction dredge cutter head The rotatable cutter head of a suction dredge which is of rearwardly-divergent spiral toothed-rib construction has a crusher of open-work construction fixedly mounted therewithin and cooperating therewith to crush and reduce the size of hard lumps dug by ... | 09/13/1983 |
| 4398361 | Recovery of sediments from the bottom of the sea by suspended suction pipe In a method and apparatus for the recovery of sediments from the sea bottom, a suction head is lowered into the sediment and continuously moved in the sediment. The suction head includes loosening means in the form of a pivot plate with blades which pivot... | 08/16/1983 |
| 4386473 | Recovery of sediments from the bottom of the sea In a method and apparatus for the recovery of sediments from the sea bottom, a suction head having a mouth is lowered into the sediment, raised from the sediment to form a depression, laterally moved to a new location adjacent the first depression, and th... | 06/07/1983 |
| 4104813 | Muck dredging machine This is a material dredging pumping machine having a pivoted parallelogram arm structure mounted on a floating barge and includes a pair of axially aligned transversely disposed digging and collecting auger sections carried by said arm structure and combi... | 08/08/1978 |
| 4070772 | Ground excavating apparatus Such a ground excavating apparatus that conducts excavation of a soft stratum by means of a bucket and employs an impact crusher for the excavation of such a hard stratum as a rock bed or the like is disclosed. Introduced in the present application is a ground... | 01/31/1978 |
| 4024655 | Cutting and feeding mechanism for suction inlet A suction pipe device for suction dredgers having at least two functionally opposed combined cutter and crusher tools mounted near the bottom opening of the suction pipe, to cut and crush and feed material to be dredged.... | 05/24/1977 |
| 4004359 | Mouthpiece for a suction dredger A mouthpiece for a suction dredger comprising an inlet section open on the underside and having sides which converge rearwardly towards a comminuting section which is also open on its underside. A shaft is rotatably mounted in the comminuting section and ... | 01/25/1977 |
| 3962803 | Dredging head A dredging apparatus having an improved dredging head in which the suction pump and drive motors for the same are mounted adjacent the clean-out and cutting augers for increased pumping efficiency. The augers include a cooperating plurality of cutting tee... | 06/15/1976 |
| 3959897 | Combination vibrating cutter head and crusher A cutter head, or excavating bucket; having a forward edge formed for penetrating earth formations, and which may be in the form of teeth; for earth working operations, especially for dredging operations, and the like, and having a vibrator mechanism asso... | 06/01/1976 |
