| Patents for H02B 11 - Switchgear having carriage withdrawable for isolation (5,238) |
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| 01/16/1979 | CA1046566A1 Drawout apparatus for electrical switchboards |
| 01/09/1979 | US4133994 Cell of low-voltage feed and distribution cellular switchboard |
| 01/09/1979 | CA1046117A1 Drawout apparatus having improved secondary contact mounting provisions |
| 12/26/1978 | US4131789 Electrical heater construction |
| 10/17/1978 | US4121067 Contact structure for drawout switchgear |
| 10/17/1978 | CA1040690A1 Drawout type circuit interrupter with interlocked levering mechanism |
| 09/05/1978 | US4112269 Drawout switchgear with levering-in mechanism |
| 08/22/1978 | US4109293 Tubular conductor for metal clad switchgear |
| 08/01/1978 | US4104497 Disconnect contact assembly for metal-clad switchgear and the like |
| 07/18/1978 | US4101744 Circuit breaker racking mechanism for drawout type switchgear |
| 05/16/1978 | US4090230 High voltage motor starter enclosure |
| 04/25/1978 | US4086452 Isolating switch shutter assembly for high voltage motor starter |
| 04/04/1978 | US4083028 Pad-mounted double-fused vacuum switchgear |
| 01/10/1978 | US4068287 Circuit breaker with improved terminal connection means |
| 12/13/1977 | US4063305 Switchboard drawout apparatus incorporating joint clamping mechanism |
| 09/27/1977 | US4051335 Switchboard drawout having trip interlock and position indicating apparatus |
| 09/27/1977 | US4051334 Switchboard drawout apparatus with interlocked joint clamping and racking mechanisms |
| 08/30/1977 | USRE29381 Electrical switchgear with primary and secondary switch means associated with current transformer |
| 07/26/1977 | US4038626 High voltage contactor |
| 07/05/1977 | US4034169 Electric switchgear device with interlocking handle means |
| 07/05/1977 | US4033660 High current electrical joint apparatus |
| 06/28/1977 | US4032207 High current electrical joint apparatus |
| 04/26/1977 | US4020301 Drawout apparatus having improved secondary contact mounting provisions |
| 04/19/1977 | US4018498 Contact clamp |
| 04/12/1977 | US4017698 Draw-out type circuit interrupter with modular construction |
| 03/15/1977 | US4012610 Drawout apparatus having improved trip interlock |
| 03/15/1977 | US4012609 Circuit-interrupters using spaced-apart bars for conductor-assemblies |
| 01/18/1977 | US4004113 Drawout apparatus for electrical switchboards |
| 01/11/1977 | US4002865 Drawout type circuit interrupter with interlocked levering mechanism |
| 01/11/1977 | US4002864 Enclosed circuit interrupter with interlocked safety barrier |
| 01/04/1977 | US4001653 Apparatus for mechanically assisting the installation and removal of an electrical device with respect to a switchboard |
| 11/09/1976 | US3991348 Apparatus for controlling access to high voltage metal-enclosed switchgear |
| 09/28/1976 | US3983460 Enclosed circuit interrupter with improved fuse assembly |
| 08/03/1976 | US3973096 Adjustable circuit-interrupter with improved support means |
| 06/29/1976 | US3967163 Supporting means for the power conductors in circuit breakers |
| 05/18/1976 | US3958156 Vacuum interrupter metal-clad switchgear vertically elevatable within compartment |
| 05/18/1976 | US3958093 Metalclad switchgear using vacuum interrupter elements with improved resilient supporting means |
| 04/20/1976 | US3952243 Voltage transformer for a high voltage switching apparatus |