Control system for dual-motor drive
Patent 4166238 Issued on August 28, 1979. Estimated Expiration Date: 
October 27, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 27, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1381163 2422117 3575648 3832616 InventorApplicationNo. 05/845835 filed on 10/27/1977US Classes:318/67, Diverse speeds for different motors318/77Controlling motor speed in response to speed of another motorExaminersPrimary: Dobeck, B.Attorney, Agent or FirmInternational ClassesH02P 5/68 (20060101)B62D 11/02 (20060101) B62D 11/04 (20060101) AbstractA control system for a dual-wheel drive which includes two drive motors independently controllable by regulating the amount of current which flows to each of the motors. Two contact means are provided wherein one is a rotatable wiper arm system and the other is a pivotable plate system. A control motor continuously moves one of these two contacts while a drive wheel selectively moves the other contact. One of the contacts serves as a common electrical supply terminal for both of the drive motors while the other contact has separate terminals respectively coupled to each of the two drive motors to supply them with current. The contact relationships between the two contacts are selectively controlled by means of the drive wheel whereby the amount of current directed to flow in each of the two motors is controlled. | |
