Multiposition controller
Patent 4565954 Issued on January 21, 1986. Estimated Expiration Date: 
January 21, 2003. 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.
January 21, 2003. 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 2800618 3614574 3850105 Driving signal control circuit Automatic antenna positioning apparatus Control of operation of loom Digital positioning systems having high accuracy Position regulation system containing a digital incremental measuring apparatus Patent #: 4439825 InventorsAssigneeApplicationNo. 06/445988 filed on 12/01/1982US Classes:318/603, Pulse-counting systems318/282, In response to movement or position (e.g., limit of travel) of motor or driven device318/467Plural sensing means for determining plural positions or plural limits-of travelExaminersPrimary: Shoop, William M. Jr.Assistant: Keane, Patrick C. Attorney, Agent or FirmInternational ClassesG05D 3/20 (20060101)G05D 3/00 (20060101) Foreign Application Priority Data1981-12-02 JPAbstractA multiposition controller includes a first switching element for switching on and off in accordance with a position of a movable object to be controlled and a second switching element for detecting the direction of movement of the object. The second switching element switches off when the object is positioned at one side from an initial position of the object, while it switches on when the object is positioned at the other side from the initial position of the object. Furthermore, the second switching element remains off or on when the object is positioned at the initial position. By such a simple structure, an accurate position control can be achieved.Field of SearchPulse-counting systemsPlural sensing means for determining plural positions or plural limits-of travel Discontinuous or "on-off" control Fine and coarse systems Plural control stations Recalibrating systems Controlled tap and slidewire Return to "off", "starting" or "neutral" positions Intermittent or step-by-step operation In response to movement or position (e.g., limit of travel) of motor or driven device Movement or position of motor or driven device | |
