Patents Assigned to Sipra Patententwicklungs-und Beteiligungsgesellschaft
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Patent number: 11332857Abstract: A single- or double-knit circular knitting machine having a cylinder (11) equipped with cylinder needles and/or a dial equipped with dial needles for the production of single- or double-jersey knitted webs, which machine has at least one thread-selection device, threads being able to be supplied to any cylinder- and/or dial needle by the thread-selection device.Type: GrantFiled: May 3, 2017Date of Patent: May 17, 2022Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Dietmar Traenkle
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Patent number: 11085136Abstract: A bobbin head assembly for a maypole type circular braiding machine contains a spindle unit, a braiding material spool with braiding material and a bobbin head. The bobbin head contains a compensation plate and a torsion spring extending helically around the extended axis of the spindle unit. The torsion spring has a nose bent radially inwards towards the center at each of the two ends of the torsion spring coils. A spring seat is attached on the compensation plate, for receiving the torsion spring with a spring abutment element for fixing the nose of one spring end in a circumferential direction of the torsion spring. A fixing collar adjustably fixes the nose of the other spring end in the opposite circumferential direction at different positions along the circumferential direction. The position of the fixing collar can be secured in the circumferential direction with respect to the bobbin head.Type: GrantFiled: November 20, 2019Date of Patent: August 10, 2021Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Roland Gonser
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Publication number: 20200354867Abstract: A knitted spacer fabric has an upper knitted cover layer and a knitted lower cover layer, said cover layers being connected to one another by pile threads, wherein the cover layers are connected to one another by way of at least two different pile threads having dissimilar elasticity properties, and the cover layers are both knitted in a single-threaded or multiple-threaded manner across the entire area.Type: ApplicationFiled: November 2, 2018Publication date: November 12, 2020Applicant: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Juergen MUELLER, Oliver BUEHLER, Bernd BOSS, Richa MAHESHWARI, Christopher J. RANALLI, Heidi A. VAUGHAN
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Publication number: 20190194842Abstract: A single- or double-knit circular knitting machine having a cylinder (11) equipped with cylinder needles and/or a dial equipped with dial needles for the production of single- or double-jersey knitted webs, which machine has at least one thread-selection device, threads being able to be supplied to any cylinder- and/or dial needle by the thread-selection device.Type: ApplicationFiled: May 3, 2017Publication date: June 27, 2019Applicant: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Dietmar TRAENKLE
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Publication number: 20180030630Abstract: A loading arrangement for a spin-knit machine includes a loading device that is movable at least with one part along at least one preset or presettable path and that is configured for loading the spin-knit machine with full roving bobbins.Type: ApplicationFiled: February 12, 2016Publication date: February 1, 2018Applicant: Sipra Patententwicklungs- und Beteiligungsgesellschaft mbhInventors: WOLFGANG BAUER, MANUEL SCHWAB, SABINE BECK
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Publication number: 20170283992Abstract: A machine for the production of knitted goods includes a plurality of stitch-forming elements, at least one stitch-forming location, an associated spinning device at the at least one stitch-forming location, at which a sliver (FB) or a yarn is produced from a roving yarn (VG) and the sliver (FB) or yarn is fed to the stitch-forming elements. The spinning device has separate drive devices, which can be actuated in a manner that enables the spinning device to produce a sliver (FB) or a yarn of variable thickness from roving yarn (VG) and which can be fed to the stitch-forming elements.Type: ApplicationFiled: November 11, 2015Publication date: October 5, 2017Applicant: SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbHInventors: Wolfgang Bauer, Bernd Boss, Thomas Dziadosz, Axel Flad, Sabine Beck, Christine Maier, Manuel Schwab, Josef Vennemann
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Patent number: 9347156Abstract: A circular knitting machine has a circular knitting unit fitted with needles and an expander arranged under the circular knitting unit for tubular knit formed by the circular knitting unit. The expander is rotatably mounted on a central rod arranged coaxially to a knitting machine axis. A pivoting bearing is arranged on the central rod to allow limited swivel movements of the expander relative to the central rod.Type: GrantFiled: May 27, 2014Date of Patent: May 24, 2016Assignee: SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Stefan Seeger
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Publication number: 20140360231Abstract: A circular knitting machine has a circular knitting unit fitted with needles and an expander arranged under the circular knitting unit for tubular knit formed by the circular knitting unit. The expander is rotatably mounted on a central rod arranged coaxially to a knitting machine axis. A pivoting bearing is arranged on the central rod to allow limited swivel movements of the expander relative to the central rod.Type: ApplicationFiled: May 27, 2014Publication date: December 11, 2014Applicant: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Stefan Seeger
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Publication number: 20140326023Abstract: A cam for a circular knitting machine has at least one cam groove formed in a cam surface to receive and guide a foot of a stitch-forming tool with which the cam is intended to operate. Additional recesses are formed in the cam surface to reduce the striking surface between the cam surface and a shank of the stitch-forming tool.Type: ApplicationFiled: April 30, 2014Publication date: November 6, 2014Applicant: SIPRA PATENTENTWICKLUNGS- UND BETEILIGUNGSGESELLSCHAFT MBHInventors: Johannes-Martin Eppler, Bernd Boss
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Patent number: 8196438Abstract: In a method and a knitting machine for the production of knitting goods with horizontal stripe a comparatively wide thread changing device having a plurality of thread fingers can be associated with two knitting points in such a manner that a first portion of the threads guided by the thread changing device can be fed to one knitting point and another portion of the threads can be fed to the other knitting point or to the knitting tools respectively moved there into a thread pick-up position.Type: GrantFiled: September 1, 2010Date of Patent: June 12, 2012Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Dietmar Traenkle, Uwe Sauter
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Patent number: 8117871Abstract: A method and a knitting machine for producing a knitted product composed of fiber material fed by a roller pair (11c) are described. The stitches are formed as usual by knitting elements (3) being raised out of a non-knitting position into a fiber take-up position, while at the same time previously formed stitches are being knocked over, and being withdrawn again after the fiber material (6) is inserted. The presence of fiber material is monitored by means of a sensor (22), which when there is no fiber material present emits an error signal, as a result of which the knitting elements are prevented from being raised further into the fiber take-up position. According to the invention, when the error signal occurs, the knitting elements (3) are withdrawn from an intermediate position again without the previously formed stitches being knocked over and without the fiber material being taken up.Type: GrantFiled: August 1, 2008Date of Patent: February 21, 2012Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Wolfgang Bauer, Axel Flad, Christine Abt-Seitel
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Patent number: 7975511Abstract: A machine for producing a knitted product by at least partly using untwisted fiber material (4) includes at least one stitch forming system, on which stitch-forming elements (3) can be brought into a fibre pick-up position. A thread guide (27) is associated with the stitch-forming system and has a passage (30) for the fibre material (4). A drafting assembly (9) is associated with the stitch-forming system for attenuation of the fibre material and a spinning device (15), which is arranged between the drafting assembly (9) and the thread guide (27) and contains at least one spinning element (16) working with a blast air flow and a transport tube (17) connected thereto. The transport tube (17) contains an outlet end (17d) for the fibre material opening into the thread guide (27). The outlet end (17d) has an inner cross-section (D2), which is exactly the same size as or smaller than an inner cross-section (D1) at an outlet end of the passage (30).Type: GrantFiled: January 22, 2008Date of Patent: July 12, 2011Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Axel Flad, Wolfgang Bauer
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Patent number: 7882712Abstract: A circular knitting machine for the production of an opened fabric tube comprises a needle cylinder (1), a frame (6), which is coupled to the needle cylinder (1) and in which at least a draw-off roller (4) and/or a take-up roller (5), drive means (36 to 43) to drive said roller, and a blade (19) intended for opening the fabric tube are each rotatably mounted, and a flexible shaft (21), which is rigidly connected to the blade (19) and a drive wheel (38), for setting the blade (19) in rotation at a rotational speed dependent on the knitting speed. According to the invention, the drive wheel (38) of the flexible shaft (21) is functionally connected (FIG. 2) to the drive means (36 to 43) for the draw-off and/or take-up roller (4, 5).Type: GrantFiled: December 17, 2008Date of Patent: February 8, 2011Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Bernhard Schaut, Dietmar Traenkle
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Patent number: 7596971Abstract: The invention relates to a circular knitting machine with a replaceable needle cylinder (7). According to the invention, two or more eccentrics (19) are disposed to be rotatable in a support ring (3) for the needle cylinder (7) or in the needle cylinder itself, and serve the purpose of lifting the needle cylinder (7) out of a normal operating position into a mounting position enabling it to be pulled out laterally, in which an underside of said needle cylinder (7) is arranged at least to be flush with an upper edge of attachments (9) attached to the support ring (3) or elsewhere (FIG. 2).Type: GrantFiled: April 28, 2008Date of Patent: October 6, 2009Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Dietmar Traenkle, Bernd Boss
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Patent number: 7073355Abstract: A knitting machine is described, which includes at least one carrier provided with knitting tools (2, 3), a cam mechanism with at least one knitting point (71) for moving selected knitting tools (2, 3) into a yarn pick-up position and a striping attachment for feeding selected yarns to the knitting tools (2, 3) brought into the yarn pick-up position. According to the invention, the striping attachment has at least one first and one second yarn changing device (73, 74) such that yarns (78, 79) fed optionally by the first or the second yarn changing device (73, 74) may be laid into the knitting tools (2, 3) brought into the yarn pick-up position at the knitting point (71) (FIG. 12).Type: GrantFiled: June 27, 2005Date of Patent: July 11, 2006Assignee: SIPRA Patententwicklungs und Beteiligungsgesellschaft mbHInventors: Dietmar Traenkle, Axel Flad, Dajana Tischler
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Patent number: 7043941Abstract: A circular knitting machine with a carrier (1) for knitting tools (2) and a cam housing (8) is described, the cam housing (8) being sub-divided into a plurality of segments (8a, 8b, 8c) which are adjacent in the circumferential direction and bear needle cams (9). According to the invention, the circular knitting machine has a dust removal device which contains air distribution channels (23) which are configured in the segments and are connected to a compressed air source via radial air supply channels (24). The air distribution channels (23) discharge into radial gaps (22) which are present between the segments and are sealed outwardly with sealing means (30) (FIG. 5).Type: GrantFiled: October 4, 2005Date of Patent: May 16, 2006Assignee: Sipra Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Rolf Willmer, Roland Sickinger, Klaus Berwald
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Patent number: 6983625Abstract: What is described is a circular knitting machine with a chassis (1) and means for manufacturing knitted goods. According to the invention, the circular knitting machine has at least one working platform (14) facilitating access to an upper region, and mounted on the outside of the chassis (1), said working platform being displaceably mounted on a guideway attached to the chassis (1) and running in its peripheral direction (FIG. 3).Type: GrantFiled: June 8, 2004Date of Patent: January 10, 2006Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Helmut Weber, Ingo Vogt
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Patent number: 6962065Abstract: What is described is a knitting machine with an electromagnetic selecting device for the three-way technique. In order to reduce the space requirement for the selecting device in height and width, assigned to each of the knitting tools (7) is a pivotable control jack (8) having two raising butts (17, 18) and to which, per selecting device, two control magnets (31, 32) arranged one after the other in the running direction of the knitting tools (7) are assigned. Depending upon which of the two control magnets (31, 32) is selected for a selecting procedure, the control jacks (8) find their way with one raising butt (17) onto a knitting cam (28) or with the other raising butt (18) onto a tuck cam (29).Type: GrantFiled: May 3, 2004Date of Patent: November 8, 2005Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Rolf Willmer
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Patent number: 6915666Abstract: A circular knitting machine is described which is intended to serve in particular the production of spacer fabrics. The circular knitting machine contains a needle cylinder (1) having cylinder needles (2), a cylinder cam (3), a dial (4) with needles (5) and a dial cam (6). The needle cylinder (1) and the dial (4) fix a vertical and a horizontal comb spacing (x, y) and a stitch spacing (z). According to the invention, the needle cylinder (1) and the dial (4) are set up to form a stitch spacing (z) of at least 6 mm, and the knitting needles (2, 5) of the needle cylinder (1) and/or the dial (4) are in the form of compound needles (FIG. 1).Type: GrantFiled: April 30, 2004Date of Patent: July 12, 2005Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Rolf Willmer
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Patent number: 6907758Abstract: A circular knitting machine is described which has a needle cylinder (1), at least one cylinder cam segment (6), a dial arrangement (9) having a dial (10) and at least one dial cam segment (11), an axis of rotation (7), which is coaxial with the needle cylinder (1) and the dial arrangement (10), and at least one thread guide element (25) intended to guide a thread (20). The cylinder cam segment (6) together with the thread guide element (25), and the dial cam segment (11) are rotatable about the rotational axis (7) relative to one another. The needle cylinder (1), and the dial arrangement (9) together with the thread guide (25) are moreover disposed displaceable relative to one another and parallel to the rotational axis (7). According to the invention, the thread guide element (25) is mounted moveable on the cylinder cam segment (6) (FIG. 2).Type: GrantFiled: September 4, 2003Date of Patent: June 21, 2005Assignee: Sipra Patententwicklungs - und Beteiligungsgesellschaft mbHInventors: Dietmar Traenkle, Harald Rehmann