Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Servo device for a multineedle sewing machine with engageable and disengageable needle bars Image Number 5 for United States Patent #4815404. A servo device for a multineedle sewing machine which includes two needle bars; driving and steop devices for said needle bars; devices for engaging and disengaging the two needle bars relative to the driving and stop devices; a feed-length adjustment device associated with at least one feed dog for the transport of the material being sewn; an adjustable thread tensioning device for the needle threads; devices for locking each needle bar selectively in its highest position; a positioning drive for the multineedle sewing machine; and a device including a position indicator attached to an arm shaft of the multineedle sewing machine, for adjusting the speed of rotation and positioning of the needle bars in predetermined positions. The servo device comprises a control system including a pair of electrical switches which respectively correspond to the needle bars, for controlling the engagement and disengagement of the needle bars relative to the driving and stop devices; a first setting device associated with the control system, for selectively interrupting the transport by the feed dog of the material being sewn; and a second setting device associated with the control system, for temporarily increasing a thread tensioning force exerted on the needle thread by the thread tensioning device.       Recently Added Patents Lithographic apparatus and device manufacturing method Self-heating pack Image forming apparatus, image forming method, and computer program product including a secondary-transfer control unit that transfers a single-color image onto the intermediate transfer mediu Grid frequency-responsive solid oxide fuel cell system Network fault manager Low voc additives for extending the wet edge and open time of aqueous coatings Method and apparatus for encoding video, and method and apparatus for decoding video   Randomly Featured Patents Three dimensional package and architecture for high performance computer Removable side wall system for a casting mould Laser beam pattern generator having rotating scanner compensator and method Guiding device with measuring scale for guiding a moveable machine element of a machine Golf club head with variable thickness front wall Grommet and connector seal for use with flat flexible cable Communication circuit for local area network Simulated natural stone face for wall block Matrix display apparatus, method and circuit for driving same and computer having same Component assembly cushioning device for mobile devices © 2006-2008 PatentGenius. All Rights Reserved.