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).

  • Publication number: 20080271807
    Abstract: 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: Application
    Filed: August 31, 2007
    Publication date: November 6, 2008
    Applicant: Sultex AG
    Inventor: Urs Schaich
  • Patent number: 7195039
    Abstract: 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: Grant
    Filed: June 29, 2004
    Date of Patent: March 27, 2007
    Assignee: Sultex AG
    Inventors: Urs Schaich, Marius Bachofen, Erich Gasser, Dietmar Markward
  • Patent number: 7066213
    Abstract: 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: Grant
    Filed: April 22, 2003
    Date of Patent: June 27, 2006
    Assignees: Sultex AG, Joweid Zentrum
    Inventor: Urs Schaich
  • Publication number: 20050034775
    Abstract: 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: Application
    Filed: June 29, 2004
    Publication date: February 17, 2005
    Applicant: Sultex AG
    Inventors: Urs Schaich, Marius Bachofen, Erich Gasser, Dietmar Markward
  • Publication number: 20030201026
    Abstract: 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: Application
    Filed: April 22, 2003
    Publication date: October 30, 2003
    Applicant: Sultex AG
    Inventor: Urs Schaich
  • Patent number: 6213161
    Abstract: 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: Grant
    Filed: December 6, 1999
    Date of Patent: April 10, 2001
    Assignee: Sulzer RĂ¼ti AG
    Inventor: Urs Schaich
  • Patent number: 6009915
    Abstract: 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: Grant
    Filed: October 13, 1998
    Date of Patent: January 4, 2000
    Assignee: Sulzer Rueti AG
    Inventors: Urs Schaich, Marcel Christe
  • Patent number: 5950684
    Abstract: 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: Grant
    Filed: November 25, 1997
    Date of Patent: September 14, 1999
    Assignee: Sulzer Rueti AG
    Inventors: Werner Degen, Urs Schaich
  • Patent number: 5564473
    Abstract: 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: Grant
    Filed: May 26, 1995
    Date of Patent: October 15, 1996
    Assignee: Sulzer Managment AG
    Inventors: Urs Schaich, Rolf Benz, Marcel Christe, Goran Dokic
  • Patent number: 5469896
    Abstract: 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: Grant
    Filed: May 9, 1994
    Date of Patent: November 28, 1995
    Assignee: Sulzer Rueti AG
    Inventors: Marcel Christe, Urs Schaich