Electric drive mechanism and method of operating same

• US 3,182,742 A
• Filed: 08/09/1961
• Issued: 05/11/1965
• Est. Priority Date: 08/09/1961
• Status: Expired due to Term

• Current Assignee: Douglas Dow
• Original Assignee: Douglas Dow
• Inventors: Dow, Douglas
• Application Number:
  US04/130,272
• Time in Patent Office: 1,371 Days
• US Class Current: 180/14.1
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B60L 15/04 using dc
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2200/22 Microcars, e.g. golf cars
• CPC Class Codes: B60L 2200/28 Trailers
• CPC Class Codes: B60L 2220/42 with use of more than one motor
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Claims

1. AN ELECTRICALLY DRIVEN ROAD VEHICLE ASSEMBLY COMPRISING, IN COMBINATION:

A ROAD TRACTOR VEHICLE HAVING A ROAD-ENGAGING DRIVING WHEEL, DIRECT CURRENT MOTOR MEANS MOUNTED ON THE TRACTOR VEHICLE AND COMPRISING THE SOLE PRIME MOVER ON THE TRACTOR VEHICLE AND CONNECTED TO SAID DRIVING WHEEL TO DRIVE THE SAME, A PLURALITY OF ELECTRICALLY RECHARGEABLE CALLS CONNECTED IN SERIES AND CARRIED BY THE TRACTOR VEHICLE WITH SAID SERIES HAVING AN OUTSIDE POSITIVE TERMINAL AT ONE END AND AN OUTSIDE NEGATIVE TERMINAL AT THE OTHER END, ELECTRIC CIRCUITS FOR ELECTRICALLY CONNECTING SAID CELLS TO THE MOTOR MEANS TO POWER AND VARY THE VOLTAGE APPLIED TO THE MOTOR MEANS, A TRAILER VEHICLE CONNECTED TO THE TRACTOR VEHICLE, AN ENGINE-GENERATOR SET MOUNTED ON THE TRAILER VEHICLE FOR SUPPLYING A RECHARGING CURRENT AT A VOLTAGE HIGHER THAN THAT OF THE SERIALLY CONNECTED CELLS, AN ELECTRICAL CIRCUIT OPERABLE INDEPENDENT OF SAID CIRCUITS FOR VARYING VOLTAGE APPLIED TO THE MOTOR MEANS AND CONNECTED TO THE ELECTRICAL GENERATOR OF SAID SET AND TO THE TWO OUTSIDE TERMINAL OF SAID SERIES OF CELLS TO ELECTRICALLY RECHARGE THE SAME, AND SAID ENGINE-GENERATOR SET SIZED TO ELECTRICALLY RECHARGE SAID SERIES OF CELLS DURING MOTOR OPERATION AT MINIMUM POWER DRAIN BUT OF INSUFFICIENT SIZE TO ELECTRICALLY RECHARGE THE SERIES OF CELLS AT MAXIMUM POWER DRAIN.