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Class Information
Number: 191/39
Name: Electricity: transmission to vehicles > Conductors > Trolley > Section insulators
Description: Means for interrupting the electrical continuity of the trolley conductor while maintaining the uninterrupted mechanical path of the collector.

Patents under this class:

Patent Number Title Of Patent Date Issued
8561771 Moveable catenary system for carrying containers using an electric container freight train Oct. 22, 2013
8069965 Section insulator for a rigid catenary Dec. 6, 2011
7740117 Neutral section insulator Jun. 22, 2010
7552807 Neutral section insulator Jun. 30, 2009
6206156 Section insulator for conductor rails Mar. 27, 2001
6186296 Sleeve and mobile connection for electric supply Feb. 13, 2001
5952609 Support point for an overhead conductor Sep. 14, 1999
5810137 Double-beam cut-out section insulator Sep. 22, 1998
5117072 Constant current non-bridging section insulator May. 26, 1992
5064972 Current contact line arrangement Nov. 12, 1991
4825987 Overhead electric traction systems May. 2, 1989
4766269 Fused trolley switch Aug. 23, 1988
4716261 Section insulator for electric railway contact conductors Dec. 29, 1987
4424889 Phase break-section insulator devices of high tensile strength Jan. 10, 1984
4406930 Trolley wire section insulator with two parallel insulating sliding strips Sep. 27, 1983
4365129 Modular section insulator switch Dec. 21, 1982
4350851 Overhead electric traction systems Sep. 21, 1982
4320820 Section insulator with improved arc control Mar. 23, 1982
4250982 Section insulator for catenary systems Feb. 17, 1981
4220229 Insulative support for conductive rail assembly Sep. 2, 1980
4209130 Adhesive tape for protecting electrically insulated rail joint Jun. 24, 1980
4187934 Section insulator for catenary systems Feb. 12, 1980
4029182 Overhead electric traction systems Jun. 14, 1977
4018315 Insulated runner for use in overhead electric traction systems Apr. 19, 1977
3952848 Section insulators of electric traction systems Apr. 27, 1976

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