Patents by Inventor Peter Majewski
Peter Majewski 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: 6180167Abstract: A flat metal sealing gasket is made as follows: on an unhardened spring steel plate having an aperture and a bead surrounding the aperture, a sinterable powder is deposited along the bead in a desired shape and thickness. Thereafter a sufficiently high temperature is applied to the deposited sinterable powder to effect sintering or melting of the powder to provide a pressure-resistant overlay on the plate and to simultaneously effect a hardening of the plate.Type: GrantFiled: June 23, 1997Date of Patent: January 30, 2001Assignee: Goetze Payen GmbHInventors: Klaus-Peter Majewski, Klaus Schmitt, Markus Heilig, Matthias Heike, Klaus Lönne
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Patent number: 5716909Abstract: Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings, which comprises heating the pure-phase 2212 phase of a Bi-Sr-Ca-Cu-O ceramic molding under pure oxygen or an oxygen-containing gas for from 1 to 40 minutes to a temperature of from 825.degree. to 900.degree. C. and generating secondary-phase precipitates in the process.Type: GrantFiled: October 1, 1996Date of Patent: February 10, 1998Assignee: Hoechst AktiengesellschaftInventors: Peter Majewski, Guenter Petzow, Fritz Aldinger, Bernhard Hettich, Steffen Elschner
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Patent number: 5250509Abstract: The invention relates to an oxide-ceramic superconducting material which contains bismuth, strontium, calcium and copper, having an overall composition of Bi.sub.y Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.x, where y is an integer from 2.35 to 2.6 and x is about 10 to 12. The material has a critical temperature T above 105 K and has a proportion of the phase Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x of at least 85% by volume. The invention also relates to a process for producing a bismuth-containing superconducting material which comprises holding the oxides or oxide precursors of bismuth, strontium, calcium and copper at a temperature in the range from 850.degree. to 890.degree. C. over a time span of a plurality of hours and adhering to the following atomic ratios:Bi:Cu>2:3Ca:Sr=0.9 to 1.50.SIGMA.(Sr+Ca):Cu=4.2:3 to 4:3.33Bi:.SIGMA.(Sr+Ca)=2.35:4 to 3.Type: GrantFiled: February 20, 1992Date of Patent: October 5, 1993Assignee: Hoechst AktiengesellschaftInventors: Bernhard Hettich, Peter Majewski, Klaus Schulze, deceased, Gunter Petzow
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Patent number: 4962939Abstract: A flat sealing gasket includes a mat of non-woven material having opposite faces; a polymerized impregnating agent distributed with the material and an overlay on at least one of the mat faces. The overlay which comprises a hardened, pressure-resistant polymer material is sunken into the mat to a substantial extent of the mat thickness.Type: GrantFiled: March 12, 1985Date of Patent: October 16, 1990Assignee: Goetze AGInventors: Klaus Lonne, Klaus-Peter Majewski, Karl-Heinz Maus, Franz-Josef Giesen
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Patent number: 4781389Abstract: A flat sealing gasket includes an opening defined by a gasket edge and a sheet metal armor framing the gasket edge. The armor at least partially encloses an annular space which is situated radially inwardly of the gasket edge and is generally concentric with the gasket opening. Further, a graphite filling is accommodated in the annular space.Type: GrantFiled: July 31, 1986Date of Patent: November 1, 1988Assignee: Goetze AGInventors: Horst Beyer, Karl-Heinz Maus, Detlev Lachnit, Klaus Lonne, Klaus-Peter Majewski, Hans-Rainer Zerfass
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Patent number: 4762330Abstract: A sealing ring, having a ring body made, for example, of high-temperature resistant compressed metal fibers includes a roughened surface adapted to be pressed against and displaced by sliding relative to a counter-face.Type: GrantFiled: April 10, 1986Date of Patent: August 9, 1988Assignee: Goetze AGInventors: Klaus Lonne, Klaus-Peter Majewski, Franz-Josef Giesen, Rudiger Voigt
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Patent number: 4659091Abstract: A sealing ring having at least one jacket face serving as a slide surface is produced of fibers and sliding agent that are passed to one another, with the fibers being relatively short fibers.Type: GrantFiled: May 3, 1985Date of Patent: April 21, 1987Assignee: Goetze AGInventors: Ernst Baasner, Klaus Lonne, Klaus-Peter Majewski
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Patent number: 4656085Abstract: An impregnated soft, flat sealing gasket made by a process including the consecutive steps of preparing a gasket material selected from the group consisting of organic fibers, inorganic fibers, synthetic fibers and mixtures thereof and a binder; forming a fiber mat from the gasket material; impregnating the fiber mat with a cross-linkable impregnating agent and at least partly cross-linking the impregnating agent in the fiber mat; and adding to the fiber material, in a fine distribution therein, a duromer synthetic resin prior to the impregnating step and as early as simultaneously with the preparing step.Type: GrantFiled: August 23, 1985Date of Patent: April 7, 1987Assignee: Goetze AGInventors: Heribert Bechen, Franz-Josef Giesen, Klaus Lonne, Klaus-Peter Majewski
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Patent number: 4635948Abstract: A soft material, flat gasket having a release coating adhered thereto prepared by a process which includes: perparing a release coating composition which is a suspension including: from 69.5 to 93 parts by weight of an oil having a viscosity in excess of 100 m Pa.times.s and a fire point in excess of 230.degree. C., which oil is one of a mineral oil, a nonreactive silicone oil, and a mixture thereof; from 5 to 20 parts by weight of a polytetrafluoroethylene powder which has a particle size of less than 5.mu.; from 0.5 to 10 parts by weight of an aqueous latex; and from 0.5 to 2 parts by weight of a wetting agent; and applying the release coating composition by coating at least a predetermined portion of at least one surface of the soft material, flat gasket therewith.Type: GrantFiled: February 18, 1986Date of Patent: January 13, 1987Assignee: Goetze AGInventors: Hans-Rainer Zerfass, Klaus-Peter Majewski, Franz-Josef Giesen
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Patent number: 4600201Abstract: A method of making a flat gasket comprising a non-woven mat having opposite faces, including the steps of impregnating the mat with a polymerizable liquid impregnating agent and applying to at least one part of at least one mat face a coating containing a polymerizable polymer material. The coating is applied to the impregnated mat prior to polymerization of the impregnating agent. The impregnating agent and the coating are simultaneously polymerized in one operation.Type: GrantFiled: March 7, 1985Date of Patent: July 15, 1986Assignee: Goetze AGInventors: Klaus Lonne, Klaus-Peter Majewski, Hans-Rainer Zerfass
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Patent number: 4554084Abstract: A sealing ring having at least one jacket face serving as slide face, the ring comprising pressed together fiber materials and slide materials, with the ring containing as a third component up to 10 parts by weight of such finely dispersed additives which chemically react with the fibers under the pressure and/or the development of heat resulting from friction stresses.Type: GrantFiled: November 28, 1983Date of Patent: November 19, 1985Assignee: Goetze AGInventors: Klaus Lonne, Klaus-Peter Majewski
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Patent number: 4448431Abstract: In a cylinder head gasket for an internal-combustion engine, composed of a disc of fibrous and/or porous soft material provided with passages, and a metallic casing extending around one such passage and presenting two arms each disposed at a respective side of the disc with at least one arm being angled in the direction toward the soft material, and a saturating agent which is plastic or elastic when installed and which fills the pores of the soft material except for the region underneath the casing, the angled portion of the at least one arm has the configuration of an annular recess directed toward the interior of the disc in the immediate vicinity of the end of the one flange arm.Type: GrantFiled: June 15, 1979Date of Patent: May 15, 1984Assignee: Goetze AGInventors: Klaus-Peter Majewski, Martin Morsbach, Dietrich Schulz
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Patent number: 4434989Abstract: A flat sealing gasket, such as a cylinder head gasket, for an internal combustion engine, has at least one opening, a cross-sectionally generally U-shaped armor framing the opening. The armor has legs straddling marginal edge zones of the gasket defining the opening. Each armor leg has an inner face in engagement with the gasket and an outer face oriented away from the gasket. A low-friction coating is provided on the outer face of at least one of the armor legs. Those sealing faces of the gasket which are externally of the armor are substantially free from the low-friction coating.Type: GrantFiled: January 18, 1982Date of Patent: March 6, 1984Assignee: Goetze AGInventors: Horst Beyer, Klaus Lonne, Klaus-Peter Majewski