Gewerkschaft Eisenhutte Westfalia GmbH
Patent Applications and Registrations
Patent applications and USPTO patent grants for Gewerkschaft Eisenhutte Westfalia GmbH.The latest application filed is for "channel sections for scraper-chain conveyors".
- Gewerkschaft Eisenhutte Westfalia GmbH - DE DE
- Gewerkschaft Eisenhutte Westfalia GmbH - Lunen DE
- Gewerkschaft Eisenhutte Westfalia GmbH - Postfach DE
| Patent | Date |
|---|---|
| Channel sections for scraper-chain conveyors Grant 5,224,582 - Hahn , et al. July 6, 1 | 1993-07-06 |
| Guides for mineral winning machines Grant 5,184,873 - Fiesel February 9, 1 | 1993-02-09 |
| Valve units for use in hydraulic control systems of mining equipment Grant 5,159,872 - Dettmers , et al. November 3, 1 | 1992-11-03 |
| Balanced hydraulic valve devices Grant 5,157,947 - Weirich , et al. October 27, 1 | 1992-10-27 |
| Electrical devices for measuring hydraulic pressure Grant 5,134,888 - Zylka , et al. August 4, 1 | 1992-08-04 |
| Arrangement for emergency operation of hydraulic appliance in an electro-hydraulically controlled mineral mining installation Grant 5,060,556 - Weirich , et al. October 29, 1 | 1991-10-29 |
| Driving systems for driving endless chains or the like in mining apparatus Grant 5,055,092 - Langenberg , et al. October 8, 1 | 1991-10-08 |
| Planetary overriding gearing and overriding driving for chain belts and the like, particularly for chain conveyors and chaindrawn mining machines Grant 4,939,949 - Langenberg July 10, 1 | 1990-07-10 |
| Control of mineral mining machines Grant 4,934,757 - Steinkuhl , et al. June 19, 1 | 1990-06-19 |
| Method of, and apparatus for, monitoring the operation of electromagnetic hydraulic valves Grant 4,870,364 - Trox , et al. September 26, 1 | 1989-09-26 |
| Pipe-driving apparatus Grant 4,790,395 - Gack , et al. December 13, 1 | 1988-12-13 |
| Pressure-relief valve devices Grant 4,790,347 - Weirich , et al. December 13, 1 | 1988-12-13 |
| Cutter-bit assemblies Grant 4,762,372 - Rassmann , et al. August 9, 1 | 1988-08-09 |
| Transfer station Grant 4,733,770 - Temme March 29, 1 | 1988-03-29 |
| Cutting head for a selective cutting machine Grant 4,721,341 - Maschewski January 26, 1 | 1988-01-26 |
| Pressure-relief valve devices Grant 4,716,928 - Kussel , et al. January 5, 1 | 1988-01-05 |
| Methods of controlling the operation of mineral mining installations Grant 4,708,394 - Trox , et al. November 24, 1 | 1987-11-24 |
| Control of the actuation of hydraulic consumers Grant 4,702,148 - Kussel , et al. October 27, 1 | 1987-10-27 |
| Mobile apparatus for cleaning remnants of carbon anode blocks Grant 4,701,249 - Wisniewski , et al. October 20, 1 | 1987-10-20 |
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