Patents by Inventor Ralf Heldmann
Ralf Heldmann 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: 20260201986Abstract: A plug-in connector including a first support part that has a first end face and a second end face, and a second support part. The first support part and the second support part are each formed in a substantially tubular manner. The second support part encloses the first end face of the first support part at its external circumference at a radial distance. A spring member made of a flexible rubber material is arranged in the gap formed by the radial distance and connects the first support part and the second support part in a resiliently flexible manner in a radial direction.Type: ApplicationFiled: November 30, 2023Publication date: July 16, 2026Inventors: Walter ZIFLE, Ralf HELDMANN, Rouven RATFISCH, Günter ZIEGLER, Markus CLEMENS
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Patent number: 12142905Abstract: Busbar comprising a supporting body (1) made of a tough-hard material, and at least one electrical conductor (2.1, 2.2, 2.3, . . . ), wherein the conductor (2.1, 2.2, 2.3, . . . ) is connected to the supporting body (1). The supporting body (1) comprises a seal (3) that is made of a rubber-elastic material, which encloses the conductor (2.1, 2.2, 2.3, . . . ) on the outer circumferential side with an annular sealing region (4) in a sealing manner.Type: GrantFiled: February 24, 2022Date of Patent: November 12, 2024Assignee: CARL FREUDENBERG KGInventors: Rouven Ratfisch, Ralf Heldmann, Guenter Ziegler, Markus Clemens, Juergen Mall
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Publication number: 20220278518Abstract: Busbar comprising a supporting body (1) made of a tough-hard material, and at least one electrical conductor (2.1, 2.2, 2.3, . . . ), wherein the conductor (2.1, 2.2, 2.3, . . . ) is connected to the supporting body (1). The supporting body (1) comprises a seal (3) that is made of a rubber-elastic material, which encloses the conductor (2.1, 2.2, 2.3, . . . ) on the outer circumferential side with an annular sealing region (4) in a sealing manner.Type: ApplicationFiled: February 24, 2022Publication date: September 1, 2022Inventors: Rouven Ratfisch, Ralf Heldmann, Guenter Ziegler, Markus Clemens, Juergen Mall
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Patent number: 9388921Abstract: A plug-in piece 1 for sealing connection of two mutually assigned cylindrical surfaces includes an essentially tubular support body 2, which on its ends exhibits annularly encircling sealing elements, which can be made to engage to produce a sealing connection with the cylindrical surfaces to be sealed, wherein at least one of the sealing elements is configured as an annularly encircling sealing bead 3, 30 on the outer surface of the support body 2, with a spherically curved sealing surface. Provision is made that the spherical radius of the sealing surface (3, 30) is chosen so that the center of the sphere is roughly at the axis of support body (2) symmetry. Thus, the compression forces are ensured to remain largely constant, independent of the angular setting over the entire surface of the sealing bead.Type: GrantFiled: August 28, 2013Date of Patent: July 12, 2016Assignee: Carl Freudenberg KGInventors: Hans Unger, Ralf Heldmann, Ingo Stephan, Markus Clemens, Carsten Hartmann, Ernst Jakob, Stephan Reddig
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Publication number: 20150152754Abstract: A seal including a sealing ring (1) made from an elastomeric material, an intermediate ring (2) made from a polymeric material, and a supporting ring (3), the sealing ring (1), the intermediate ring (2) and the supporting ring (3) being arranged concentrically with respect to one another, and the sealing ring (1) and the supporting ring (3) being arranged in each case on the sides of the intermediate ring (2) which face away axially from one another. The sealing ring (1), the intermediate ring (2), and the supporting ring (3) form a pre-assembled unit (4).Type: ApplicationFiled: June 3, 2014Publication date: June 4, 2015Applicant: CARL FREUDENBERG KGInventors: Ralf HELDMANN, Markus CLEMENS, Ernst JAKOB, Günter ZIEGLER
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Patent number: 9016698Abstract: A seal including a tubular carrier body (1) and two annular sealing elements (2, 3), wherein the carrier body (1) on both sides of its front face is respectively enclosed by one of the sealing elements (2, 3) on the side of its outer perimeter forming a seal. At least one of the sealing elements (2, 3) is made of a non-elastomeric high-temperature resistant sealing material.Type: GrantFiled: August 1, 2012Date of Patent: April 28, 2015Assignee: Carl Freudenberg KGInventors: Thomas Jäck, Hans Unger, Ralf Heldmann, Reiner Dirr
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Publication number: 20140091533Abstract: A plug-in piece 1 for sealing connection of two mutually assigned cylindrical surfaces includes an essentially tubular support body 2, which on its ends exhibits annularly encircling sealing elements, which can be made to engage to produce a sealing connection with the cylindrical surfaces to be sealed, wherein at least one of the sealing elements is configured as an annularly encircling sealing bead 3, 30 on the outer surface of the support body 2, with a spherically curved sealing surface. Provision is made that the spherical radius of the sealing surface (3, 30) is chosen so that the center of the sphere is roughly at the axis of support body (2) symmetry. Thus, the compression forces are ensured to remain largely constant, independent of the angular setting over the entire surface of the sealing bead.Type: ApplicationFiled: August 28, 2013Publication date: April 3, 2014Applicant: Carl Freudenberg KGInventors: Hans UNGER, Ralf HELDMANN, Ingo STEPHAN, Markus CLEMENS, Carsten HARTMANN, Ernst JAKOB, Stephan REDDIG
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Publication number: 20140091532Abstract: A plug-in piece for sealing connection of two mutually assigned cylindrical surfaces includes an essentially tubular support body which on its ends exhibits annularly encircling sealing elements with a spherically curved sealing surface with a fluting formed therein.Type: ApplicationFiled: August 23, 2013Publication date: April 3, 2014Applicant: CARL FREUDENBERG KGInventors: Hans UNGER, Ralf HELDMANN, Ingo STEPHAN, Markus CLEMENS, Carsten HARTMANN, Ernst JAKOB, Stephan REDDIG
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Publication number: 20130038028Abstract: A seal including a tubular carrier body (1) and two annular sealing elements (2, 3), wherein the carrier body (1) on both sides of its front face is respectively enclosed by one of the sealing elements (2, 3) on the side of its outer perimeter forming a seal. At least one of the sealing elements (2, 3) is made of a non-elastomeric high-temperature resistant sealing material.Type: ApplicationFiled: August 1, 2012Publication date: February 14, 2013Applicant: CARL FREUDENBERG KGInventors: Thomas Jäck, Hans Unger, Ralf Heldmann, Reiner Dirr