|
| US4189702 | 25 sept. 1978 | 19 févr. 1980 | Lowrance Electronics, Inc. | Commutator and fiber brush rotating disc |
| US4267476 | 25 juin 1979 | 12 mai 1981 | Westinghouse Electric Corp. | Metal-solid lubricant brushes for high-current rotating electrical machinery |
| US4277708 | 25 juin 1979 | 7 juil. 1981 | Westinghouse Electric Corp. | Environment and brushes for high-current rotating electrical machinery |
| US4349760 | 9 oct. 1980 | 14 sept. 1982 | Siemens Aktiengesellschaft | Current transfer brush with graphite foils |
| US4587723 | 2 mai 1985 | 13 mai 1986 | The United States of America as represented by the Secretary of the Navy | Method for making a high current fiber brush collector |
| US5032748 | 1 nov. 1989 | 16 juil. 1991 | Sumitomo Heavy Industries, Ltd. | Superconducting DC machine |
| US6502494 | 29 déc. 2000 | 7 janv. 2003 | | Multi-railgun system using three phase alternating current |
| US6956445 | 16 févr. 2004 | 18 oct. 2005 | Electro-Tec Corp. | Broadband high-frequency slip ring system |
| US7142071 | 29 juil. 2005 | 28 nov. 2006 | Moog Inc. | Broadband high-frequency slip-ring system |