Yoshiaki Yoshida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: Disclosed is an open-end spinning machine which comprises a feed roller and a top roller for positively feeding a spun yarn from a spinning unit, a traverse guide for traversing the spun yarn in a direction perpendicular to the spun yarn feeding direction, a winding drum for frictionally rotating a conical surface bobbin for winding the traversed yarn to form a conical cheese, a guide or guides for absorbing yarn path length variations caused by the traverse motion of the spun yarn and by the conical angle of the conical cheese during the winding operation, a device for adjusting the guide in response to the conical angle of the conical cheese. By utilizing this machine, a good-shaped conical cheese of an open-end spun yarn having a uniform hardness along the axial direction of the cheese is obtained. Furthermore, this machine can be utilized for winding of various cheeses having various conical angles.
Abstract: A yarn handling machine includes bobbins on which yarns are wound, forming cheeses. At the beginning of the yarn winding operation, transfer tail windings must be provided on the end of the bobbin.An arrangement for providing transfer tail windings includes a yarn guide movable between an operative position closely adjacent to the bobbin and an inoperative position spaced from the bobbin sufficient to prevent interference of the yarn guide with the formation of the cheese. In the operative position, the yarn guide serves for providing the transfer tail windings.
Abstract: Disclosed is a manipulator which is particularly suitable for tapping a furnace. The manipulator includes an elongate arm which is axially reciprocable and rotatable in a vertical and a horizontal plane, and a handle for operating the arm for its axial reciprocal movement and vertical or horizontal rotation. The manipulator is particularly characterized by the provision of a bilateral servo system interconnecting between the arm and the handle for feeding back to the handle any variation in the force acting on the arm under operation.
June 9, 1976
Date of Patent:
May 2, 1978
A. Daidoseiko K.K., B. Denkikagakukogyo K.K.
Abstract: A yarn winding mechanism includes a reference point through which the yarn always passes during yarn piecing-up and normal winding operations, a pair of yarn taking-out rollers disposed above the reference point, and a traversing device from which the yarn is wound onto a cone cheese. In order to cause the winding mechanism to soon begin and then continue the normal winding operation after completion of the yarn piecing-up, a device for compensating changes in yarn tension is disposed between the traversing device and the yarn taking-out rollers with a yarn guide surface extending generally parallel to the axis of the taking-out roller, and the upper taking-out roller is formed with a yarn catch in one end face edge thereof on the larger diameter side of the cone cheese, the yarn catch being arranged in an optimum position with respect to the parallelly extending surface of the tension compensating device and the reference point.
Abstract: An improved thread-draw-off guide attached to a spinning rotor of an open-end spinning unit. The thread-draw-off guide is provided with a cylindrical annular guide portion and a radial outer surface extended outward from the cylindrical annular guide portion and the above-mentioned radial outer surface is formed with a roughened friction surface characterized in that the coefficient of friction thereof against a yarn in a radial direction is smaller than the coefficient of friction thereof against a yarn in a concentric direction thereof.
May 21, 1975
Date of Patent:
October 19, 1976
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Dawa Boseki Kabushiki Kaisha
Abstract: In a spinning apparatus comprising a spinning rotor and a centrally arranged thread drawoff tube for drawing off thread from the spinning chamber, an improved thread drawoff tube having a thread passage for delivering the thread from the tube is provided, the thread passage being provided with a combination of a curved ring shaped friction surface and a flat ring shaped friction surface formed outside of the curved ring shaped surface, the friction resistance of the thread passage decreasing toward the outer edge of the flat ring shaped surface.