Patents by Inventor Urs Schaich
Urs Schaich 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).
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Publication number: 20080271807Abstract: A method for holding an inserted weft thread in an air jet weaving machine is presented which is provided with a reed (8). In this method the weft thread is inserted into the air jet weaving machine, is deflected by means of a nozzle (3) out of the weft insertion direction (9) and is blown into a receiving opening (5a) of the catching channel (5) and held in the same. The position of the nozzle (3) and of the catching channel (5) is for this purpose matched to the desired cloth width within the width of the reed. In the named method the nozzle (3) and the catching channel passage (5) are arranged at the beat up side of the reed (8).Type: ApplicationFiled: August 31, 2007Publication date: November 6, 2008Applicant: Sultex AGInventor: Urs Schaich
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Patent number: 7195039Abstract: A jet weaving machine is proposed in which a weft thread (S) can be inserted by means of a fluid from a weft insertion side (2) to a receiving side (3), including a weaving sley (9), along which a weft insertion path (4) extends, which determines a weft insertion direction (A), and including a monitoring apparatus (20) which is arranged at the receiving side (3) and which comprises two sensor devices (21, 22) for detecting the weft thread (S) or parts of the weft thread respectively, with exactly one of the sensor devices (21) being firmly mounted on the weaving sley (9).Type: GrantFiled: June 29, 2004Date of Patent: March 27, 2007Assignee: Sultex AGInventors: Urs Schaich, Marius Bachofen, Erich Gasser, Dietmar Markward
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Patent number: 7066213Abstract: A catching and holding apparatus for catching-side weft thread ends in a weaving machine comprises a main nozzle and a catching passage for holding and stretching a weft thread end and a carrier on which the main nozzle and the catching passage are arranged. Furthermore, the catching and holding apparatus also comprises an auxiliary nozzle and one or more guides, which are arranged on the carrier in such a manner that a weft thread end which is located in the active region of the auxiliary nozzle is brought by an air jet of the auxiliary nozzle along the guides into the active region of the main nozzle.Type: GrantFiled: April 22, 2003Date of Patent: June 27, 2006Assignees: Sultex AG, Joweid ZentrumInventor: Urs Schaich
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Publication number: 20050034775Abstract: A jet weaving machine is proposed in which a weft thread (S) can be inserted by means of a fluid from a weft insertion side (2) to a receiving side (3), including a weaving sley (9), along which a weft insertion path (4) extends, which determines a weft insertion direction (A), and including a monitoring apparatus (20) which is arranged at the receiving side (3) and which comprises two sensor devices (21, 22) for detecting the weft thread (S) or parts of the weft thread respectively, with exactly one of the sensor devices (21) being firmly mounted on the weaving sley (9).Type: ApplicationFiled: June 29, 2004Publication date: February 17, 2005Applicant: Sultex AGInventors: Urs Schaich, Marius Bachofen, Erich Gasser, Dietmar Markward
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Publication number: 20030201026Abstract: A catching and holding apparatus (1) for catching-side weft thread ends in a weaving machine comprises a main nozzle (3) and a catching passage (5) for holding and stretching a weft thread end (9) and a carrier (2) on which the main nozzle and the catching passage are arranged. Furthermore, the catching and holding apparatus (1) also comprises an auxiliary nozzle (4) and one or more guides (6a, 6b), which are arranged on the carrier (2) in such a manner that a weft thread end (9) which is located in the action region (4a) of the auxiliary nozzle (4) is brought by an air jet of the auxiliary nozzle (4) along the guides (6a, 6b) into the action region (3a) of the main nozzle (3).Type: ApplicationFiled: April 22, 2003Publication date: October 30, 2003Applicant: Sultex AGInventor: Urs Schaich
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Patent number: 6213161Abstract: An arrangement for the holding of a weft thread for a series shed weaving machine has a holder apparatus (11) for the weft thread (4). Two forwarding elements (12, 13) are arranged at both sides of the holder apparatus and are movable relative to the holder apparatus in order to introduce the weft thread. The weft thread (4) extends transversely to the holder apparatus and transversely to the holder apparatus and transversely to the direction of movement of the forwarding elements, into the holder apparatus and furthermore, an apparatus (14) in order to catch and to tension the weft thread. The holder apparatus comprises a thread clamp (15) with a stationary clamping part (17) and a movable clamping part (18) which is under spring action and which forms a clamping gap (27). The weft thread is held in a stretch state by the forwarding elements (12, 13) and the apparatus (14) and is displaceable transversely through the clamping gap.Type: GrantFiled: December 6, 1999Date of Patent: April 10, 2001Assignee: Sulzer RĂ¼ti AGInventor: Urs Schaich
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Patent number: 6009915Abstract: Lengths of weft thread are sequentially inserted in sheds formed by a series shed weaving machine. Weft thread is continuously supplied with a fluid flow. By reversing the flow direction of the fluid flow or deflecting the weft thread, a thread loop is formed outside a weft distribution apparatus of the weaving machine so that the weft thread remains taut inside the weft thread distribution apparatus. A nozzle arrangement in which the fluid flow direction is reversible or a weft thread clamping and deflecting arrangement are used to form the loop and maintain the weft thread taut.Type: GrantFiled: October 13, 1998Date of Patent: January 4, 2000Assignee: Sulzer Rueti AGInventors: Urs Schaich, Marcel Christe
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Patent number: 5950684Abstract: A method and an apparatus provides for the use of a sensor to detect a state which requires the removal of a weft thread inserted by a weaving rotor of a series shed weaving machine used for the formation of shed to make a cloth. Upon detection of the state, the weaving rotor is stopped before the inserted weft thread to be removed is beaten up against the cloth edge of the cloth. A weft thread removal apparatus is provided for removing the weft thread after the weaving rotor is stopped.Type: GrantFiled: November 25, 1997Date of Patent: September 14, 1999Assignee: Sulzer Rueti AGInventors: Werner Degen, Urs Schaich
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Patent number: 5564473Abstract: An apparatus and method for correcting an irregularity during the insertion of a weft yarn into a weaving rotor of a series shed weaving machine involves drawing a length of weft yarn from a supply unit and delivering the weft yarn to the weaving machine in synchronicity with the weaving cycle. The length of weft yarn is inserted into a weft yarn conveyor apparatus and wound around a conveyor roller. A sensor is positioned between the supply unit and the conveyor apparatus to detect a weft yarn interruption, e.g., as a result of a weft yarn breakage or the yarn running out of spool. When the interruption is detected, the conveyor roller continues to deliver weft yarn stored in the storage apparatus until a complete weft yarn insertion into the weaving machine has taken place (i.e., weft yarn having a single loom width). The weft yarn is then cut at the insertion side of the weaving machine and the weaving machine is stopped.Type: GrantFiled: May 26, 1995Date of Patent: October 15, 1996Assignee: Sulzer Managment AGInventors: Urs Schaich, Rolf Benz, Marcel Christe, Goran Dokic
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Patent number: 5469896Abstract: A cutter for use with looms has a positionally stable, rotating first cutting member (1) and a rotating second cutting member (2) which is moveable in relation to the first cutting member. The cutting members are connected in a frictional manner by an energy storing device (8) and rotate in opposite directions. The movable second cutting member (2) is mounted so that it can freely rotate on an axle (6), which is retained in a torsionally secure manner in membrane springs (11), which are elastically deformable in the axial direction in order to compensate for the lateral deflections of the rotating, positionally stable first cutting member (1), as a result of which the service life of the cutters is extended. The device is particularly suitable for a series shed loom because a high cutting rhythm can be achieved.Type: GrantFiled: May 9, 1994Date of Patent: November 28, 1995Assignee: Sulzer Rueti AGInventors: Marcel Christe, Urs Schaich