Electric powered vehicle and method of propelling the same

Patent · Tue Dec 30 04:00:00 EST 1986

OSTI ID:6838137

Posma, B W; Hill, R A

This patent describes an electric powered vehicle or the like comprising: a first mechanical drive system for a first side of the vehicle; a second mechanical drive system for a second side of the vehicle; a first DC motor and a second DC motor respectively coupled to the first mechanical drive system and second mechanical drive system; a source of DC power on the vehicle; the first DC motor having a first field and a first armature, the second DC motor having a second field and a second armature; the first field, the first armature, the second field, and the second armature being connected in a series circuit with the source of power; sensing means for sensing a loss of traction for the first mechanical drive system; switch means for disabling the first motor from the series circuit in response to the sensing means, and timing means for maintaining the disconnecting of the first motor for a predetermined time. A method of providing propulsion is described for an electric powered vehicle of the type which includes a first mechanical drive system for a first side of the vehicle. The method comprises: sensing a loss of traction of the first mechanical drive system; disabling the first motor from the series circuit after sensing loss of traction for the first mechanical drive system, and maintaining disabling of the first motor for a predetermined time.

• Assignee: National Mine Service Co., Pittsburgh, PA
• Patent Number(s): US 4633147
• OSTI ID: 6838137
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330300* -- Advanced Propulsion Systems-- Electric-Powered Systems
ARMATURES
CURRENTS
DESIGN
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTRIC MOTORS
ELECTRIC-POWERED VEHICLES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
MOTORS
PROPULSION
SWITCHES
TIMING CIRCUITS
VEHICLES