Servo rotary motor
Patent 4510420 Issued on April 9, 1985. Estimated Expiration Date: 
February 7, 2004. 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.
February 7, 2004. 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 ReferencesElectromagnetic motor and generator Electro-magnetic reciprocating engine Patent #: 4317058 InventorAssigneeApplicationNo. 06/577792 filed on 02/07/1984US Classes:318/37, Plural reciprocating or oscillating motors310/24Plural coresExaminersPrimary: Witkowski, Stanley J.Assistant: Bergmann, Saul M. Attorney, Agent or FirmInternational ClassesH02K 7/065 (20060101)H02K 33/14 (20060101) H02K 33/00 (20060101) H02K 7/06 (20060101) AbstractA modified form of apparatus is disclosed, and the preferred and illustrated embodiment thereof utilizes a pulse width modulator circuit to control the duty cycle pulses applied to coils for rotating an engine. The pulse width modulator (PWM) cooperates with an engine distributor system to generate a procession of pulses which are in turn applied to a power transistor to switch the transistor off and on in timed sequence. This applies power to coils for a magnetic engine. Moreover, two coils are included with each piston and are therefore able to be triggered at different intervals.A modified construction is also disclosed including a pair of coils which are serially positioned but independently connected to cooperate with a sleeve and piston telescoped therein and suitable passages for cooling water are also included.Field of SearchPlural reciprocating or oscillating motors | |
