|
| US3969985 | 2 Jul 1973 | 20 Jul 1976 | Siemens Aktiengesellschaft | Fluid actuating device for an electric circuit breaker |
| US4321435 | 1 Sep 1977 | 23 Mar 1982 | Siemens Aktiengesellschaft | Fluid actuating device for an electric circuit breaker |
| US4343972 | 28 Oct 1980 | 10 Aug 1982 | BBC Brown, Boveri & Company, Ltd. | Hydraulic drive for electrical switches |
| US4443195 | 20 May 1981 | 17 Apr 1984 | Kabushiki Kaisha Morita Seisakusho | Driving and water pouring control device for dental air-turbine handpiece |
| US4461937 | 18 Sep 1981 | 24 Jul 1984 | McGraw-Edison Company | Fail-safe hydraulically operated circuit breaker accumulator arrangement |
| US4730092 | 12 Dec 1986 | 8 Mar 1988 | Siemens Aktiengesellschaft | Hydraulic driving device for an electric pressurized-gas switch |
| US5804787 | 13 Nov 1996 | 8 Sep 1998 | Hitachi, Ltd. | Gas circuit breaker and liquid pressure-driving system to be used therefor |
| US6815629 | 16 May 2003 | 9 Nov 2004 | Hitachi, Ltd. | Hydraulic pressure actuating apparatus for circuit breaker |
