Patents by Inventor Ralph J. Hellmig
Ralph J. Hellmig 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: 11754110Abstract: A self-tapping screw (10, 30) comprising a drive (12) and a shank (14) bearing a thread comprising a main thread (16, 32), wherein the main thread (16, 32) has a maximum main thread external diameter (DAF) and a cutting area (F) and a supporting area (T) following in the direction of the drive (12), wherein the shank (14) has a threaded end (18) at an end opposite the drive (12), with the screw end (18) having a diameter (DE) of at least 20% of the maximum main thread external diameter (DAF), The shank further has, in the region of the screw end (18), a tap flute (20), wherein the tap flute (20) comprises at least two tapping thread turns (20a, 20b, 20c) which attain, in their external diameter (DAA), no more than 90% of the maximum main thread external diameter (DAF) and form a tap region in which the tapping thread turns (20a, 20b, 20c) have the same diameter development, and in addition in that the diameter of the main thread (16, 32) in the tap flute region (AB) is less than or equal to the diameter (DAA)Type: GrantFiled: June 21, 2019Date of Patent: September 12, 2023Assignee: EJOT GMBH & CO. KGInventors: Michael Achenbach, Juergen Behle, Ralf Birkelbach, Volker Dieckmann, Frank Dratschmidt, Jan Hackler, Rene Gerber, Ralph J. Hellmig, Ilir Selimi, Stephan Weitzel
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Publication number: 20230136145Abstract: The invention relates to a method for producing a screw, having the following steps: (a) rolling a screw wire made of low-alloy carbon steel to produce screw (10) having a thread; (b) heating the entire screw (10) to an austenitizing temperature under a carbon atmosphere and/or nitrogen atmosphere and maintaining the temperature; (c) quenching the entire screw (10) to a bainitizing temperature and maintaining the bainitizing temperature until the screw has a bainitic structure over its cross-section. The invention is characterized in that the screw (10) is subsequently hardened locally at its tip (22), by the tip (22) being heated to an austenitizing temperature and the screw (10) being subsequently quenched to a temperature below the martensite starting temperature (MS).Type: ApplicationFiled: March 16, 2021Publication date: May 4, 2023Inventors: Ralph J. HELLMIG, Michael ACHENBACH, Fabian SIMONSEN
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Publication number: 20210364030Abstract: The invention relates to a screw (IO) in order to cut a mating thread in a plastic article, comprising a lower threaded part (F) and an upper threaded part (T), the lower threaded part having a larger diameter and its tip covering a larger surface than the upper threaded part.Type: ApplicationFiled: June 21, 2019Publication date: November 25, 2021Applicant: EJOT GMBH & CO. KGInventors: MICHAEL ACHENBACH, JUERGEN BEHLE, RALF BIRKELBACH, VOLKER DIECKMANN, FRANK DRATSCHMIDT, JAN HACKLER, RENE GERBER, RALPH J. HELLMIG, ILIR SELIMI, STEPHAN WEITZEL
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Patent number: 11181139Abstract: A securing element includes a threaded region, wherein a securing rotational direction and an axial clamping direction are defined by the thread design. The securing element has a head with a head lower face which faces the clamping direction and via which a force-fitting connection with a component can be produced. The head is designed such that the head lower face has an edge region at a radial distance from the head center, and the contour of the head lower face runs opposite the clamping direction in the direction of the head center starting from the edge region, whereby a spring effect can be produced. The edge region has a changing circumferential level in the axial direction. Opposite the securing rotational direction, the circumferential level rises at a rising angle of maximally 15° in the clamping direction over a central angle of at least 65°.Type: GrantFiled: January 12, 2017Date of Patent: November 23, 2021Assignee: EJOT GMBH & CO. KGInventors: Ralph J. Hellmig, Wilfried Pinzl, Ilir Selimi, Gerd Weigel
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Publication number: 20210115959Abstract: A self-tapping screw (10, 30) comprising a drive (12) and a shank (14) bearing a thread comprising a main thread (16, 32), wherein the main thread (16, 32) has a maximum main thread external diameter (DAF) and a cutting area (F) and a supporting area (T) following in the direction of the drive (12), wherein the shank (14) has a threaded end (18) at an end opposite the drive (12), with the screw end (18) having a diameter (DE) of at least 20% of the maximum main thread external diameter (DAF), The shank further has, in the region of the screw end (18), a tap flute (20), wherein the tap flute (20) comprises at least two tapping thread turns (20a, 20b, 20c) which attain, in their external diameter (DAA), no more than 90% of the maximum main thread external diameter (DAF) and form a tap region in which the tapping thread turns (20a, 20b, 20c) have the same diameter development, and in addition in that the diameter of the main thread (16, 32) in the tap flute region (AB) is less than or equal to the diameter (DAA)Type: ApplicationFiled: June 21, 2019Publication date: April 22, 2021Applicant: EJOT GMBH & CO. KGInventors: MICHAEL ACHENBACH, JUERGEN BEHLE, RALF BIRKELBACH, VOLKER DIECKMANN, FRANK DRATSCHMIDT, JAN HACKLER, RENE GERBER, RALPH J. HELLMIG, ILIR SELIMI, STEPHAN WEITZEL
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Publication number: 20190032699Abstract: A securing element includes a threaded region, wherein a securing rotational direction and an axial clamping direction are defined by the thread design. The securing element has a head with a head lower face which faces the clamping direction and via which a force-fitting connection with a component can be produced. The head is designed such that the head lower face has an edge region at a radial distance from the head center, and the contour of the head lower face runs opposite the clamping direction in the direction of the head center starting from the edge region, whereby a spring effect can be produced. The edge region has a changing circumferential level in the axial direction. Opposite the securing rotational direction, the circumferential level rises at a rising angle of maximally 15° in the clamping direction over a central angle of at least 65°.Type: ApplicationFiled: January 12, 2017Publication date: January 31, 2019Applicant: EJOT GmbH & Co. KGInventors: Ralph J. HELLMIG, Wilfried PINZL, Ilir SELIMI, Gerd WEIGEL
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Patent number: 9109619Abstract: The invention relates to a screw having a screw head (2), a screw shank (1) and a corrugated conical flange (4) which decreases in thickness toward the outside, which flange (4) will abut on a component part as the screw is being screwed into the latter. The two lateral surfaces (5, 6) of the flange (4) from the screw shank (1) to the outer edge (7) of the flange taper continuously toward the outside with the thickness of the flange (4) decreasing at the same time, with its corrugation (8) extending substantially over the entire radial width of the flange (4).Type: GrantFiled: November 29, 2011Date of Patent: August 18, 2015Assignee: EJOT GMBH & CO. KGInventors: Wilfried Pinzl, Ralph J. Hellmig
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Publication number: 20130251476Abstract: The invention relates to a screw having a screw head (2), a screw shank (1) and a corrugated conical flange (4) which decreases in thickness toward the outside, which flange (4) will abut on a component part as the screw is being screwed into the latter. The two lateral surfaces (5, 6) of the flange (4) from the screw shank (1) to the outer edge (7) of the flange taper continuously toward the outside with the thickness of the flange (4) decreasing at the same time, with its corrugation (8) extending substantially over the entire radial width of the flange (4).Type: ApplicationFiled: November 29, 2011Publication date: September 26, 2013Applicant: EJOT GMBH & CO. KGInventors: Wilfried Pinzl, Ralph J. Hellmig