Patents by Inventor Roland Schmidt
Roland Schmidt 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: 6092665Abstract: A process is provided for recovering a saline mineral from an ore containing the saline mineral and impurities. In one aspect, the process generally includes the steps of separating a first portion of impurities from the ore by density separation, electrostatically separating a second portion of impurities from the ore, and magnetically separating a third portion of impurities from the ore. The process can further include the steps of crushing the ore and dividing the crushed ore into a plurality of size fractions before the above-referenced separating steps. In another aspect, the process includes the steps of calcining the ore and subsequently separating a first portion of impurities by density separation. Indirect heating may be utilized for the calcining process and, preferably, calcining gases are recycled and utilized for heating fluidizing another portion of ore. Water vapor may be condensed from the calcining gas and utilized for other purposes.Type: GrantFiled: July 3, 1997Date of Patent: July 25, 2000Assignee: Environmental Projects, IncInventors: Roland Schmidt, Dale L. Denham, Ralph B. Tacoma, Allen H. Moore, Allan L. Turner
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Patent number: 6091799Abstract: An X-ray tube with a cathode and an anode arranged in a vacuum housing has an electromagnet for deflecting the electron beam emanating from the cathode and proceeding to the anode, the electromagnet having a yoke with two legs connected to one another by a base section, with a winding surrounding the base section. The base section with the winding is located outside the vacuum housing. The legs of the yoke of the electromagnet extend into the vacuum housing so that the electron beam proceeds between the two legs.Type: GrantFiled: July 21, 1998Date of Patent: July 18, 2000Assignee: Siemens AktiengesellschaftInventor: Roland Schmidt
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Patent number: 6090005Abstract: A two-mode, compound-split, hybrid transmission having an input member for receiving power from a prime mover power source and an output member for delivering power from the transmission. The transmission utilizes four planetary gear sub sets, three torque transfer devices as well as first and second supplemental power receiving/delivery units--either electric motor/generator units or hydrostatic pump/motor units. At least one of the gear members in the first and second planetary gear sub sets are connected to the first supplemental power receiving/delivery units, and at least one of said gear members in the second, third and fourth planetary gear sub sets are continuously connected to the second supplemental power receiving/delivery units. Torque transfer devices selectively connect the carriers associated with the first, second and fourth planetary gear sub sets to each other and to the output member.Type: GrantFiled: July 26, 1999Date of Patent: July 18, 2000Assignee: General Motors CorporationInventors: Michael Roland Schmidt, Donald Klemen
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Patent number: 6056661Abstract: A powertrain has an engine, multi-range transmission and a final drive gearing. The transmission includes an input planetary gear set, the carrier of which is driven by the engine, for providing a power split between the sun gear and the ring gear. The sun gear and ring gear both are connected with respective transfer gear members. The gear members are connected to respective members of a continuously variable transmission unit (CVU) and to selectively engageable clutch mechanisms. The clutch mechanisms provide selective drive connections with an output transfer gear mechanism that is drivingly connected with the final drive gearing. The CVU is controlled to establish a variable drive ratio between the transfer gear members connected with the sun gear and the ring gear. Range changes in the powertrain occur at synchronous points of operation in the CVU in a manner to provide three forward ranges and a reverse range.Type: GrantFiled: June 14, 1999Date of Patent: May 2, 2000Assignee: General Motors CorporationInventor: Michael Roland Schmidt
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Patent number: 6055294Abstract: An X-ray tube has a cathode and an anode that are arranged in a vacuum housing. For deflection of the electron beam propagating from the cathode to the anode, two electromagnets are provided, of which each having a U-shaped yoke with two arms connected with one another by a base segment, and comprises a winding surrounding the base segment. The respective end faces of the arms of the two yokes are arranged opposite one another so as to maintain an air gap. The magnetic poles positioned opposite one another have the same polarity. The electron beam proceeds through the opening limited by the two yokes.Type: GrantFiled: July 15, 1998Date of Patent: April 25, 2000Assignee: Siemens AktiengesellschaftInventors: Bernhard Foerst, Marion Meusel, Roland Schmidt
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Patent number: 6045477Abstract: A powertrain has an engine, a multi-range continuously variable transmission (CVT) and a final drive mechanism. The CVT has a continuously variable unit (CVU) and a planetary gear set. A plurality of friction devices that are selectively connectable to establish three forward ranges and one reverse range wherein the CVU is effective to provide infinitely variable ratios between the engine and the final drive mechanism. One friction device is engaged during a geared neutral condition, a first forward range and a reverse range. The neutral condition is established by setting the CVU at a predetermined ratio. The reverse range is operated by changing the CVU ratio toward a maximum underdrive ratio from the neutral condition and the first forward range is operated by changing the CVU ratio toward a maximum overdrive ratio. The second and third forward ranges are established by synchronously interchanging friction devices.Type: GrantFiled: June 14, 1999Date of Patent: April 4, 2000Assignee: General Motors CorporationInventor: Michael Roland Schmidt
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Patent number: 6022287Abstract: A vehicular transmission embodying the concepts of the present invention permits facile construction by virtue of a modular construction. Such a transmission has an open ended central housing module. The annular stator of one motor/generator is supported interiorly of the annular central housing module, in such a manner as to circumscribe the longitudinal axis of the annular central housing module. A rotor is operatively positioned interiorly of the stator. The modular transmission incorporates a modular input closure subassembly and/or a modular output closure modular subassembly. A closure subassembly has an end cap and a retaining shroud demountably attached to the end cap, and the closure subassembly is demountably secured to an open end of the central housing module. An input shaft member is coaxially and rotatably supported by the input closure subassembly, if employed, and an output shaft member is coaxially and rotatably supported by the output closure subassembly, if employed.Type: GrantFiled: August 19, 1998Date of Patent: February 8, 2000Assignee: General Motors CorporationInventors: Donald Klemen, Michael Roland Schmidt
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Patent number: 6007782Abstract: The invention relates to a device, in particular for the treatment of low-viscosity polymer melts, containing a vessel (1) with a stirrer element, the stirrer element (6) essentially comprising a support structure which passes through the vessel and on which surface formers (8) are arranged. According to the invention, the support structure is designed as a cage-like rod frame (7).This results in the following advantages:1. Owing to the now possible continuous wetting or wiping of the surfaces, encrustations and inhomogeneities are avoided.2. Due to enhanced cascading with weir plates, the residence time spectrum can be controlled, which likewise improves the product quality.3. The flexing of the stirrer element is reduced.Type: GrantFiled: September 11, 1996Date of Patent: December 28, 1999Assignee: Arteva North America S.a.r.l.Inventors: Hartmut Hey, Hans Lohe, Roland Schmidt, Gordon Shaw
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Patent number: 5974982Abstract: A fitting for a table leg of a folding table which can be folded in when the table is not in use, wherein the table leg is pivotally mounted in a bearing component attached underneath the table plate. In the position of use of the table, the table leg can be locked. A drop lever is pivotally mounted in the bearing component. When the table leg is folded out into the position of use of the table, the drop lever automatically as a result of gravity locks the table leg against a stop serving as an abutment and automatically unlocks the table leg when the table is placed in a stacking position.Type: GrantFiled: November 6, 1998Date of Patent: November 2, 1999Assignee: Kusch +Co Sitzmoebelwerke GmbH & Co. KGInventors: Christain Lepper, Roland Schmidt, Uwe Sommerlade
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Patent number: 5935035Abstract: An electro-mechanical powertrain has two motor/generator (m/g) units disposed in concentric coaxial arrangement with a plurality of planetary gearsets and a pair of friction brakes. An input shaft is driven by a prime mover through a selectively engageable clutch. The motor/generator units are controlled in combination with the planetary gearset, the prime mover and an electrical source (batteries) to provide a two-mode, input split powertrain.Type: GrantFiled: June 24, 1998Date of Patent: August 10, 1999Assignee: General Motors CorporationInventor: Michael Roland Schmidt
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Patent number: 5931757Abstract: A two-mode, compound-split, electro-mechanical transmission utilizing an input member for receiving power from an engine, and an output member for delivering power from the transmission. First and second motor/generators are operatively connected to an energy storage device through a control for interchanging electrical power among the storage means, the first motor/generator and the second motor/generator. The transmission employs three planetary gear subsets which are coaxially aligned. Each planetary gear arrangement utilizes first and second gear members, and each first and second gear members meshingly engage a plurality of planet gears rotatably mounted on a carrier. The first and second motor/generators are coaxially aligned with each other as well as the three planetary gear subsets which are circumscribed by the first and second motor/generators. At least one of the gear members in the first or second planetary gear subsets is connected to the first motor/generator.Type: GrantFiled: June 24, 1998Date of Patent: August 3, 1999Assignee: General Motors CorporationInventor: Michael Roland Schmidt
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Patent number: 5911959Abstract: Disclosed are a variety of processes for the purification of saline minerals and in particular, trona. Some of the processes include a combination wet and dry recovery process which results in high recovery and purification at relatively low cost. The dry separation methods can include density separation, magnetic separation and electrostatic separation. Other processes include a modified slush process for the purification of calcined trona (sodium carbonate) by the introduction of anhydrous sodium carbonate into a saturated brine solution and subsequent separation of insoluble impurities.Type: GrantFiled: November 7, 1997Date of Patent: June 15, 1999Assignee: Environmental Projects, Inc.Inventors: John S. Wold, Wayne C. Hazen, Rudolph Pruszko, Roland Schmidt, Dale Lee Denham, Jr.
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Patent number: 5898755Abstract: An X-ray tube has a cathode and an anode arranged in a vacuum housing, the electron beam emanating from the cathode proceeding through a hollow cylindrical housing part of the vacuum housing to the anode. An electromagnet is provided for the deflection of the electron beam. The electromagnet has a U-shaped yoke with two legs having first ends connected to one another by a base section and having a winding surrounding the base section. The legs straddle the housing part and the electromagnet is disposed so that the electron beam is spaced a distance from the second ends of the legs so that from the second ends of the legs so that the electron beam is situated only in the stray field of the electromagnet, rather than in the region of maximum field strength.Type: GrantFiled: October 21, 1997Date of Patent: April 27, 1999Assignee: Siemens AktiengesellschaftInventors: Marion Meusel, Roland Schmidt, Guenter Ries
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Patent number: 5736113Abstract: Disclosed is a method for beneficiating trona from a feedstream containing trona and impurities by a dry separation method, namely, electrostatically separating a first portion of impurities from the trona at a temperature between about 25.degree. C. and about 45.degree. C. The disclosed beneficiation of trona method may also include separation of impurities from trona by other dry separation methods, such as density separation, magnetic separation and size separation, and/or by wet separation methods.Type: GrantFiled: January 11, 1996Date of Patent: April 7, 1998Assignee: Environmental Projects, Inc.Inventors: Wayne C. Hazen, Roland Schmidt, Dale Lee Denham, Jr.
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Patent number: D396058Type: GrantFiled: May 12, 1997Date of Patent: July 14, 1998Assignee: Klio-Eterna Schreibgerate GmbH & Co. KGInventors: Roland Schmidt, Klaus Lackner
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Patent number: D399077Type: GrantFiled: May 21, 1997Date of Patent: October 6, 1998Assignee: Mauser Office GmbHInventors: Christian Lepper, Roland Schmidt, Uwe Sommerlade
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Patent number: D399682Type: GrantFiled: May 21, 1997Date of Patent: October 20, 1998Assignee: Mauser Office GmbHInventors: Christian Lepper, Roland Schmidt, Uwe Sommerlade
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Patent number: D400580Type: GrantFiled: January 5, 1998Date of Patent: November 3, 1998Assignee: Klio-Eterna Schreibgerate GmbH & co. KGInventors: Roland Schmidt, Klaus Lackner
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Patent number: D400582Type: GrantFiled: January 5, 1998Date of Patent: November 3, 1998Assignee: Klio-Eterna Schreibgerate GmbH & Co. KGInventors: Roland Schmidt, Klaus Lackner
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Patent number: D406862Type: GrantFiled: May 18, 1998Date of Patent: March 16, 1999Assignee: Klio-Eterna Schreibgerate GmbH & Co., KGInventors: Roland Schmidt, Klaus Lackner