Open-loop synchronizer for a slide out room
November 27, 2021. 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 2831722 Frame-by-frame memory display system Facsimile mid-page restart Positioning control device for an electric motor Apparatus for synchronizing cylinder position in a multiple cylinder hydraulic press brake Sewing machine motor control device Equalizer for sliding tubular members Cable-driven extension mechanism for trailer slide-out System for providing adjustable occupant space in a vehicle Synchronization device for a slide out room InventorsApplicationNo. 09/995146 filed on 11/27/2001US Classes:318/700, SYNCHRONOUS MOTOR SYSTEMS318/449, With respect to a fixed standard, master or reference device318/611, With stabilizing features (e.g., anti-hunting, damping)318/632, With compensating features318/696, OPEN-LOOP STEPPING MOTOR CONTROL SYSTEMS318/758With diverse operationExaminersPrimary: Masih, KarenAttorney, Agent or FirmInternational ClassesB60P 3/34 (20060101)B60P 3/32 (20060101) AbstractAn open-loop system for synchronizing movement of a slide out room includes a pair of motors connected to extendable members which support the room during movement between an extended and a retracted position for driving the extendable members, a controller connected to the motors, and a plurality of switches connected to the controller for permitting operator control of the system. The controller provides synchronized output signals to the motors which have known output characteristics depending upon the motor inputs. The controller thus ensures the motors move substantially in unison without requiring feedback from the motors or the extendable members. The system may be initialized to establish stop positions of the extendable members which are stored in the controller. | |
