Patents by Inventor Mary Jo Johnson
Mary Jo Johnson 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: 20200000427Abstract: Aspects of the present disclosure relate to a method of making a one piece diaphragm. The method includes providing a tool die, providing a disc formed from a first material, positioning the disc within an injection mold, providing a second material; heating the second material. The method includes melt molding the second material into the tool die and around a peripheral edge of the disc to form the one piece diaphragm comprising a rim, and removing the one piece diaphragm from the injection mold.Type: ApplicationFiled: July 23, 2019Publication date: January 2, 2020Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Joseph P. Keller, Dean Sitz, Mary Jo Johnson
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Patent number: 10398406Abstract: The present invention is a diaphragm including a disc formed from a first material and a rim formed from a second material. The disc and the rim are a unitary piece. The rim has a Shore A durometer hardness of between about 40 and 110.Type: GrantFiled: July 30, 2015Date of Patent: September 3, 2019Assignee: 3M Innovative Properties CompanyInventors: Joseph P. Keller, Dean Sitz, Mary Jo Johnson
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Patent number: 10213181Abstract: The present invention is a stethoscope diaphragm including a disc and a rim. The rim includes a plurality of features extending from an inner circumference of the rim.Type: GrantFiled: January 12, 2016Date of Patent: February 26, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Joseph P. Keller, Mary Jo Johnson, Dean E. Sitz
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Publication number: 20180214114Abstract: The present invention is a diaphragm including a disc formed from a first material and a rim formed from a second material. The disc and the rim are a unitary piece. The rim has a Shore A durometer hardness of between about 40 and 110.Type: ApplicationFiled: July 30, 2015Publication date: August 2, 2018Inventors: Joseph P. Keller, Dean Sitz, Mary Jo Johnson
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Publication number: 20180008227Abstract: The present invention is a stethoscope diaphragm including a disc and a rim. The rim includes a plurality of features extending from an inner circumference of the rim.Type: ApplicationFiled: January 12, 2016Publication date: January 11, 2018Inventors: Joseph P. Keller, Mary Jo Johnson, Dean E. Sitz
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Patent number: 6952332Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly includes a vacuum chamber and a first conductor which is structured to be coupled to a circuit. The first conductor is disposed within the vacuum chamber. The pressure chamber assembly has a second conductor structured to be coupled to a ground, a pressure chamber, a gas generation device and a bullet assembly. The pressure chamber assembly disposed adjacent to the vacuum chamber assembly. The gas generation device coupled to, and in fluid communication with the pressure chamber. The bullet assembly is disposed in the pressure chamber and structured to move between a first position, where the bullet assembly is spaced from the first and second conductors, and a second position, where the bullet assembly contacts, and is in electrical communication with, the first and second conductors.Type: GrantFiled: June 14, 2002Date of Patent: October 4, 2005Assignee: Eaton CorporationInventors: Paul G. Slade, Erik Dannel Taylor, Mary Jo Johnson Vander Heiden
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Patent number: 6853525Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly includes a first, fixed contact disposed within the vacuum chamber and a second, movable contact disposed within the vacuum chamber. A rod is coupled to, and in electrical communication with, the second contact. The rod is structured to move between a first position wherein the second contact is spaced from the first contact and a second position where the first and second contacts are in electrical communication with each other. The pressure chamber assembly has a gas generation device and a cylindrical barrel defining a pressure chamber with a first end and a second end. The barrel second end has an opening. A piston assembly is disposed in the pressure chamber and coupled to the rod, which passes through the second, open end. The gas generation device is coupled to the pressure chamber assembly and in fluid communication with the barrel and the piston assembly.Type: GrantFiled: June 14, 2002Date of Patent: February 8, 2005Assignee: Eaton CorporationInventors: Engelbert Hetzmannseder, Mary Jo Johnson Vander Heiden, Francis Christopher Edrozo, Mark Allan Juds
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Patent number: 6853524Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly having a first conductor and a pressure chamber assembly having a second metal conductor, with an opening, and a bullet assembly. The first conductor is coupled to a power line and the second conductor is coupled to a ground. The bullet assembly has a metal lance structured to engage the opening. The lance is shaped to create an arc when engaging the opening so that the second conductor and the lance are welded together.Type: GrantFiled: June 14, 2002Date of Patent: February 8, 2005Assignee: Eaton CorporationInventors: Mark Allan Juds, Edward Louis Wellner, Francis Christopher Edrozo, Mary Jo Johnson Vander Heiden, Peter John Theisen, Francois Jean Machand, Erik Dannel Taylor
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Patent number: 6813127Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly has a first conductor coupled to a power line, a non-conductive housing and a seal cup. The pressure chamber assembly has a second conductor coupled to a ground, a pressure chamber and a bullet assembly. The pressure chamber assembly is disposed adjacent to the vacuum chamber assembly. The bullet assembly is disposed in the pressure chamber and is structured to move between a first position and a second position. The bullet assembly has a metal lance with a blade portion. The blade portion is structured to puncture the seal cup.Type: GrantFiled: June 14, 2002Date of Patent: November 2, 2004Assignee: Eaton CorporationInventors: Francis Christopher Edrozo, Engelbert Hetzmannseder, Mark Allan Juds, Mary Jo Johnson Vander Heiden, Paul G. Slade, Erik Dannel Taylor, Benjamin Alex Rosenkrans
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Publication number: 20030231452Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly includes a first, fixed contact disposed within the vacuum chamber and a second, movable contact disposed within the vacuum chamber. A rod is coupled to, and in electrical communication with, the second contact. The rod is structured to move between a first position wherein the second contact is spaced from the first contact and a second position where the first and second contacts are in electrical communication with each other. The pressure chamber assembly has a gas generation device and a cylindrical barrel defining a pressure chamber with a first end and a second end. The barrel second end has an opening. A piston assembly is disposed in the pressure chamber and coupled to the rod, which passes through the second, open end. The gas generation device is coupled to the pressure chamber assembly and in fluid communication with the barrel and the piston assembly.Type: ApplicationFiled: June 14, 2002Publication date: December 18, 2003Inventors: Engelbert Hetzmannseder, Mary Jo Johnson Vander Heiden, Francis Christopher Edrozo, Mark Allan Juds
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Publication number: 20030231448Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly has a first conductor coupled to a power line, a non-conductive housing and a seal cup. The pressure chamber assembly has a second conductor coupled to a ground, a pressure chamber and a bullet assembly. The pressure chamber assembly is disposed adjacent to the vacuum chamber assembly. The bullet assembly is disposed in the pressure chamber and is structured to move between a first position and a second position. The bullet assembly has a metal lance with a blade portion. The blade portion is structured to puncture the seal cup.Type: ApplicationFiled: June 14, 2002Publication date: December 18, 2003Inventors: Francis Christopher Edrozo, Engelbert Hetzmannseder, Mark Allan Juds, Mary Jo Johnson Vander Heiden, Paul G. Slade, Erik Dannel Taylor, Benjamin Alex Rosenkrans
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Publication number: 20030231445Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly having a first conductor and a pressure chamber assembly having a second metal conductor, with an opening, and a bullet assembly. The first conductor is coupled to a power line and the second conductor is coupled to a ground. The bullet assembly has a metal lance structured to engage the opening. The lance is shaped to create an arc when engaging the opening so that the second conductor and the lance are welded together.Type: ApplicationFiled: June 14, 2002Publication date: December 18, 2003Inventors: Mark Allan Juds, Edward Louis Wellner, Francis Christopher Edrozo, Mary Jo Johnson Vander Heiden, Peter John Theisen, Francois Jean Machand, Erik Dannel Taylor
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Publication number: 20030231439Abstract: A vacuum arc interrupter bullet assembly that includes a piston body having a first side and a second side and a lance made from a conductive material having an elongated body with a first end and a second end. The lance first end is tapered to a point and the lance second end is coupled to the piston body second side. The piston body first side has a surface that is either concave or convex.Type: ApplicationFiled: June 14, 2002Publication date: December 18, 2003Inventors: Mark Allan Juds, Edward Louis Wellner, Francis Christopher Edrozo, Mary Jo Johnson Vander Heiden, Engelbert Hetzmannseder
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Publication number: 20030231438Abstract: A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly includes a vacuum chamber and a first conductor which is structured to be coupled to a circuit. The first conductor is disposed within the vacuum chamber. The pressure chamber assembly has a second conductor structured to be coupled to a ground, a pressure chamber, a gas generation device and a bullet assembly. The pressure chamber assembly disposed adjacent to the vacuum chamber assembly. The gas generation device coupled to, and in fluid communication with the pressure chamber. The bullet assembly is disposed in the pressure chamber and structured to move between a first position, where the bullet assembly is spaced from the first and second conductors, and a second position, where the bullet assembly contacts, and is in electrical communication with, the first and second conductors.Type: ApplicationFiled: June 14, 2002Publication date: December 18, 2003Inventors: Paul G. Slade, Erik Dannel Taylor, Mary Jo Johnson Vander Heiden
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Patent number: D740415Type: GrantFiled: August 6, 2014Date of Patent: October 6, 2015Assignee: 3M Innovative Properties CompanyInventors: Mary Jo Johnson, Thomas G. Skulley
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Patent number: D820981Type: GrantFiled: November 18, 2015Date of Patent: June 19, 2018Assignee: 3M Innovative Properties CompanyInventor: Mary Jo Johnson