Attachable hand-operated/automatic dual usage venetian blind controller
Patent 4956588 Issued on September 11, 1990. Estimated Expiration Date: 
December 21, 2009. 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.
December 21, 2009. 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 3269454 3403474 3646985 Remote control apparatus for opening and shutting a blind Manually operable electric curtain Torque responsive motor-drive assembly Patent #: 4827199 InventorApplicationNo. 454463 filed on 12/21/1989US Classes:318/16, SUPPLIED OR CONTROLLED BY SPACE-TRANSMITTED ELECTROMAGNETIC OR ELECTROSTATIC ENERGY (E.G., BY RADIO)160/331, Motor operating means or electric or fluid pressure control318/53, Plural, diverse motor controls318/434, LIMITATION OF MOTOR LOAD, CURRENT, TORQUE OR FORCE (E.G., PREVENTING OVERLOAD)318/469, Overloading limit-of-travel-type control means318/480Radiant energyExaminersPrimary: Ro, BentsuAttorney, Agent or FirmInternational ClassH04Q 009/02AbstractThis invention relates to an attachable hand-operated/automatic dual usage venetian blind controller which can be attached to an existing venetian blind to set the blades of such a venetian blind together at any angle or to draw up the blades together to one side of the window by means of infrared remote control so as to regulate the light and air passing through. During power failure, the venetian blind can be controlled through hand operation without removing the controller. The controller of this invention is generally comprised of two DC motor and speed reducing gear set assemblies, two guide wheels, two pressure wheels, a beading cord driving wheel, a pull cord driving wheel, an infrared receiver control circuit, and an infrared transmitter.Field of SearchSUPPLIED OR CONTROLLED BY SPACE-TRANSMITTED ELECTROMAGNETIC OR ELECTROSTATIC ENERGY (E.G., BY RADIO)PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS Motors with diverse motions (e.g., reciprocating and rotary motors) Plural, diverse motor controls for different motors Plural, diverse motor controls Motor-reversing MOTOR-REVERSING Armature or primary circuit control LIMITATION OF MOTOR LOAD, CURRENT, TORQUE OR FORCE (E.G., PREVENTING OVERLOAD) Movement, position, or limit-of-travel Limit-of-travel control means Overloading limit-of-travel-type control means Radiant energy HANGING OR DRAPE TYPE Motor operating means or electric or fluid pressure control Motor-driven lever Motor driven Remote actuating or initiating station Operator drives closure along guide | |
