The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1985
Filed:
Aug. 19, 1982
Francis A May, Pittsburgh, PA (US);
Larry Patts, McMurray, PA (US);
Consolidation Coal Company, Pittsburgh, PA (US);
Abstract
A hollow trolley pole associated with an electrically propelled vehicle has an upper end portion and a lower end portion. A passageway extends downwardly through the trolley pole from the upper end portion to the lower end portion. A trolley wire contact shoe is mounted on the pole upper end portion and slides along an electric power line or trolley wire that is suspended, for example, from a mine roof in an underground mine. An electrical conductor extends from the contact show through the passageway to the lower end portion of the pole which is received within a socket-like connector which is spring mounted in a base member connected to the vehicle frame. The conductor is enclosed within an impact resistant flexible conduit that extends from the passageway in the lower end portion of the pole through the connector and the base member and into a contactor box for connection to a propulsion motor. The conductor is completely enclosed so that it is not exposed to the effects of physical damage from the point it exits the trolley pole and is connected to a circuit breaker on board the vehicle. The circuit breaker is normally maintained in a closed position to provide a continuous flow of current from the trolley wire through the electrical conductor to the propulsion motor. In the event of a short or overload, the circuit breaker trips to interrupt the flow of current through the electrical conductor to the propulsion motor.