CARL B LEWIS
Engineers in Erie, PA
License number
Pennsylvania PE013296L
Category
Engineers
Type
Professional Engineer
Address
Address
Erie, PA 16511
Personal information
See more information about CARL B LEWIS at radaris.comName
Address
Phone
509 Old Orchard Trl, Pittsburgh, PA 15238
5645 Woodcrest Ave, Philadelphia, PA 19131
5829 Warrington Ave, Philadelphia, PA 19143
5612 Spruce Creek Rd, Tyrone, PA 16686
3679 Deepwater Ln, Brookhaven, PA 19015
Professional information
See more information about CARL B LEWIS at trustoria.com
Pantograph Emergency Lowering System
Pantograph Emergency Lowering System
US Patent:
4034832, Jul 12, 1977
Filed:
Aug 4, 1976
Appl. No.:
5/711750
Inventors:
Carl B. Lewis - Erie PA
Assignee:
General Electric Company - Erie PA
International Classification:
B60L 514
US Classification:
191 86
Abstract:
An emergency lowering system for a vehicle mounted pantograph in which lever actuated trip valves are disposed at opposite ends of the pantograph current collector in a position to be actuated in the event that an overhead contact wire tends to slide off and end of the current collector. The trip valves control a relay air valve which is arranged to supply a relatively large volume of high pressure air to a pneumatic jack wherein the jack is connected to lower the pantograph. In a preferred embodiment the emergency lowering system is adapted to supply air at a higher pressure and larger volume than the normal lowering system whereby the pantograph is lowered at a faster rate in an emergency. For use in a train of vehicles the system includes a pressure responsive switch for detecting initiation of an emergency lowering condition and for providing a signal which can be used to effect lowering of all pantographs in the train if any one pantograph experiences an emergency condition.