Patents by Inventor Harald KALLENBACH
Harald KALLENBACH 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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Patent number: 11952692Abstract: A stitch-forming tool assembly for a sewing machine is used to produce a double-chain stitch seam. A sewing needle of the assembly can be driven up and down in a needle stitching direction perpendicular to a material to be sewn and is designed to guide a needle thread. A looper of the assembly is designed to guide a looper thread and for oscillating movement in an oscillating movement plane. The latter is spanned by the needle stitching direction and by a sewing direction along the double chain stitch seam. During an entire double chain stitch a path of movement of the looper lies completely in the oscillating movement plane. This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.Type: GrantFiled: December 7, 2020Date of Patent: April 9, 2024Assignee: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald Kallenbach, Berthold Becker, Stefan Samstag
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Publication number: 20230077246Abstract: A sewing machine has seam-forming tools, comprising a needle for guiding an upper thread and a looper. The needle is designed as a curved needle which is pivotable about a needle pivot axis. This embodiment is such that a distance of the curved needle from the pivot axis is equal to a radius of a curve of the curved needle about the pivot axis. The looper is designed as a looper which is rotatable about a looper rotational axis and has a lower thread reserve. The looper rotational axis runs parallel to a sewing material support region. The sewing machine can be used to produce a durable seam.Type: ApplicationFiled: February 12, 2021Publication date: March 9, 2023Applicant: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald KALLENBACH, Berthold BECKER, Stefan SAMSTAG
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Publication number: 20230013197Abstract: A stitch-forming tool assembly for a sewing machine is used to produce a double-chain stitch seam. A sewing needle of the assembly can be driven up and down in a needle stitching direction perpendicular to a material to be sewn and is designed to guide a needle thread. A looper of the assembly is designed to guide a looper thread and for oscillating movement in an oscillating movement plane. The latter is spanned by the needle stitching direction and by a sewing direction along the double chain stitch seam. During an entire double chain stitch a path of movement of the looper lies completely in the oscillating movement plane. This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.Type: ApplicationFiled: December 7, 2020Publication date: January 19, 2023Applicant: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald KALLENBACH, Berthold BECKER, Stefan SAMSTAG
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Publication number: 20220178062Abstract: A thread finger assembly for a sewing machine has at least one thread finger. The latter can be actuated between a loop engagement position and a loop pull-out position. The loop engagement position serves for the engagement of the thread finger in a thread loop generated by the sewing machine in a stitch forming region. The loop pull-out position is displaced relative to the loop engagement position for pulling out the thread loop with the thread finger, away from the stitch forming area. A thread finger drive serves for actuating the thread finger between the loop engagement position and the loop pull-out position. This results in an assembly of a sewing machine with which an appealing seam pattern is generated in a reproducible manner at a seam beginning.Type: ApplicationFiled: March 20, 2020Publication date: June 9, 2022Applicant: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald KALLENBACH, Berthold BECKER, Stefan SAMSTAG
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Patent number: 11268225Abstract: Sewing machine with a sewing machine housing (2) comprising a lower housing part (3), an upper housing part (4) with a sewing head (6) and a stand (5), which connects the lower housing part (3) to the upper housing part (4), wherein the upper housing part (4) comprises a stand-side arm housing section (7), a head-side arm housing section (8) and a joint (23), wherein the joint (23) is arranged in such a manner that the head-side arm housing section (8) can be swiveled between a preparation position for the picking up/delivering of a sewing material and a sewing position for sewing the sewing material.Type: GrantFiled: March 4, 2019Date of Patent: March 8, 2022Assignee: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald Kallenbach, Berthold Becker, Stefan Samstag
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Publication number: 20200399806Abstract: Sewing machine with a sewing machine housing (2) comprising a lower housing part (3), an upper housing part (4) with a sewing head (6) and a stand (5), which connects the lower housing part (3) to the upper housing part (4), wherein the upper housing part (4) comprises a stand-side arm housing section (7), a head-side arm housing section (8) and a joint (23), wherein the joint (23) is arranged in such a manner that the head-side arm housing section (8) can be swiveled between a preparation position for the picking up/delivering of a sewing material and a sewing position for sewing the sewing material.Type: ApplicationFiled: March 4, 2019Publication date: December 24, 2020Applicant: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald KALLENBACH, Berthold BECKER, Stefan SAMSTAG
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Patent number: 10851483Abstract: A sewing system serves for sewing seams which the multi-dimensionally in space. A needle-bar upper part of a sewing head is mounted so as to be pivotable in a driven manner about a needle-bar longitudinal axis. A gripper lower part is mounted so as to be pivotable in a driven manner, and in a manner synchronous with the needle-bar upper part, about the needle-bar longitudinal axis, in the sewing-head lower part. Motor components for driving the movement of a needle bar, for pivoting the needle-bar upper part, for driving a gripper in a manner synchronous with the needle bar and for pivoting the gripper lower part are disposed outside the needle-bar upper part and outside the gripper lower part. Parts to be sewn that are topographically non-uniform are also rendered accessible.Type: GrantFiled: October 18, 2016Date of Patent: December 1, 2020Assignee: PFAFF Industriesysteme und Maschinen GmbHInventors: Harald Kallenbach, Robert Keilmann
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Publication number: 20180313012Abstract: A sewing system serves for sewing seams which the multi-dimensionally in space. A needle-bar upper part of a sewing head is mounted so as to be pivotable in a driven manner about a needle-bar longitudinal axis. A gripper lower part is mounted so as to be pivotable in a driven manner, and in a manner synchronous with the needle-bar upper part, about the needle-bar longitudinal axis, in the sewing-head lower part. Motor components for driving the movement of a needle bar, for pivoting the needle-bar upper part, for driving a gripper in a manner synchronous with the needle bar and for pivoting the gripper lower part are disposed outside the needle-bar upper part and outside the gripper lower part. Parts to be sewn that are topographically non-uniform are also rendered accessible.Type: ApplicationFiled: October 18, 2016Publication date: November 1, 2018Inventors: Harald KALLENBACH, Robert KEILMANN