Patents by Inventor Heike TISCHLER
Heike TISCHLER 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: 11933321Abstract: A rotary pump includes a balance drum connected to a pump shaft between a hydraulic unit and the pump shaft, an axial relief passage between a balance drum and a stationary part stationary relative to a pump housing, and a balancing device arranged between the balance drum and the hydraulic unit, the balancing device including a ring-shaped rotary part connected to the pump shaft, and a ring-shaped non-rotary part movable only in the axial direction, the rotary part having an axial face facing the hydraulic unit, the rotary part and the non-rotary part overlap in a radial direction, which is perpendicular to the axial direction, and the non-rotary part movable in the axial direction such that a radial relief passage is open during operation of the pump, with the radial relief passage extending in the radial direction between the rotary part and the non-rotary part.Type: GrantFiled: December 30, 2021Date of Patent: March 19, 2024Assignee: SULZER MANAGEMENT AGInventors: Heike Tischler, Thomas Welschinger, Laurent Chatagny, Stefan Berten
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Patent number: 11493053Abstract: A pump for conveying a fluid includes a stationary housing, an impeller conveying the fluid from a low pressure region to a high pressure region, a shaft to rotate the impeller about an axial direction, and a separation device to restrict a flow of the fluid from the high pressure region to the low pressure region. The separation device includes a rotary part connected to the shaft, and a stationary part stationary with respect to the housing. The rotary and stationary parts face each other and delimit a gap between the stationary part and the rotary part. The gap is arranged between the high and low pressure regions. A recess is disposed in the stationary part or the rotary part, the recess including a bottom, and a non-metallic insert is disposed in the recess. A relief channel enables fluid communication between the bottom and the low pressure region.Type: GrantFiled: September 10, 2020Date of Patent: November 8, 2022Assignee: SULZER MANAGEMENT AGInventors: Christopher David Radcliffe, Torsten Johne, Heike Tischler, Flavio Giardino, Thomas Welschinger
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Publication number: 20220220980Abstract: A rotary pump includes a balance drum connected to a pump shaft between a hydraulic unit and the pump shaft, an axial relief passage between a balance drum and a stationary part stationary relative to a pump housing, and a balancing device arranged between the balance drum and the hydraulic unit, the balancing device including a ring-shaped rotary part connected to the pump shaft, and a ring-shaped non-rotary part movable only in the axial direction, the rotary part having an axial face facing the hydraulic unit, the rotary part and the non-rotary part overlap in a radial direction, which is perpendicular to the axial direction, and the non-rotary part movable in the axial direction such that a radial relief passage is open during operation of the pump, with the radial relief passage extending in the radial direction between the rotary part and the non-rotary part.Type: ApplicationFiled: December 30, 2021Publication date: July 14, 2022Inventors: Heike TISCHLER, Thomas WELSCHINGER, Laurent CHATAGNY, Stefan BERTEN
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Publication number: 20210088056Abstract: A pump for conveying a fluid includes a stationary housing, an impeller conveying the fluid from a low pressure region to a high pressure region, a shaft to rotate the impeller about an axial direction, and a separation device to restrict a flow of the fluid from the high pressure region to the low pressure region. The separation device includes a rotary part connected to the shaft, and a stationary part stationary with respect to the housing. The rotary and stationary parts face each other and delimit a gap between the stationary part and the rotary part. The gap is arranged between the high and low pressure regions. A recess is disposed in the stationary part or the rotary part, the recess including a bottom, and a non-metallic insert is disposed in the recess. A relief channel enables fluid communication between the bottom and the low pressure region.Type: ApplicationFiled: September 10, 2020Publication date: March 25, 2021Inventors: Christopher David RADCLIFFE, Torsten JOHNE, Heike TISCHLER, Flavio GIARDINO, Thomas WELSCHINGER
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Patent number: 10273969Abstract: An axially split pump for a fluid includes an axially split housing with a bottom and a cover, a rotatable shaft, and a side cover. The side cover has a first surface for cooperating with a second surface. The second surface extends over the bottom and the cover. The bottom has a first sealing surface and the cover has a second sealing surface. The bottom and the cover can be fastened so that the sealing surfaces are in direct contact. One sealing groove is in one of the sealing surfaces for the reception of a string-like sealing element, the sealing groove extending up to the second surface. A recess surrounding the shaft is in the second surface and a projection surrounding the shaft is in the first surface. The recess and the projection are arranged so that they form a ring-like groove for the reception of a ring-like sealing element.Type: GrantFiled: November 20, 2015Date of Patent: April 30, 2019Assignee: SULZER MANAGEMENT AGInventors: Willy Handloser, Thomas Welschinger, Heike Tischler
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Patent number: 10066636Abstract: An axially split pump for conveying a fluid includes an axially split housing with a bottom part and a cover. The bottom part has a first sealing surface and the cover has a second sealing surface. The bottom part and the cover are fastened to one another so that the two sealing surfaces are in direct contact with one another. At least one first sealing groove for the reception of a first sealing element is disposed in the sealing surfaces. A second sealing groove is disposed for the reception of a second sealing element. The first sealing groove and the second sealing groove are connected to one another through a connection region and an elastic pre-loading element is disposed in the connection region, which exerts a pre-load onto one of the two sealing elements.Type: GrantFiled: November 20, 2015Date of Patent: September 4, 2018Assignee: SULZER MANAGEMENT AGInventors: Thomas Welschinger, Heike Tischler, Berthold Vogel
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Patent number: 10001132Abstract: An axially split pump for conveying a fluid has an axially split housing that includes a bottom part and a cover. The bottom part has a first sealing surface and the cover has a second sealing surface, the bottom part and the cover being fastened so that the two sealing surfaces have direct contact. A first sealing groove for the reception of a first string-like sealing element is in the sealing surfaces, and a second sealing groove is provided for the reception of a second string-like element, the second sealing groove being connected to the first sealing groove via an opening. A connection element is in the opening that has two lateral cut-outs respectively for the reception of a one of the string-like sealing elements. The cut-outs are arranged and configured so that the two string-like sealing elements run substantially in parallel in the region of the connection element.Type: GrantFiled: November 19, 2015Date of Patent: June 19, 2018Assignee: SULZER MANAGEMENT AGInventors: Thomas Welschinger, Heike Tischler, Berthold Vogel
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Publication number: 20160160870Abstract: An axially split pump for conveying a fluid has an axially split housing that includes a bottom part and a cover. The bottom part has a first sealing surface and the cover has a second sealing surface, the bottom part and the cover being fastened so that the two sealing surfaces have direct contact. A first sealing groove for the reception of a first string-like sealing element is in the sealing surfaces, and a second sealing groove is provided for the reception of a second string-like element, the second sealing groove being connected to the first sealing groove via an opening. A connection element is in the opening that has two lateral cut-outs respectively for the reception of a one of the string-like sealing elements. The cut-outs are arranged and configured so that the two string-like sealing elements run substantially in parallel in the region of the connection element.Type: ApplicationFiled: November 19, 2015Publication date: June 9, 2016Inventors: Thomas WELSCHINGER, Heike TISCHLER, Berthold VOGEL
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Publication number: 20160160873Abstract: An axially split pump for a fluid includes an axially split housing with a bottom and a cover, a rotatable shaft, and a side cover. The side cover has a first surface for cooperating with a second surface. The second surface extends over the bottom and the cover. The bottom has a first sealing surface and the cover has a second sealing surface. The bottom and the cover can be fastened so that the sealing surfaces are in direct contact. One sealing groove is in one of the sealing surfaces for the reception of a string-like sealing element, the sealing groove extending up to the second surface. A recess surrounding the shaft is in the second surface and a projection surrounding the shaft is in the first surface. The recess and the projection are arranged so that they form a ring-like groove for the reception of a ring-like sealing element.Type: ApplicationFiled: November 20, 2015Publication date: June 9, 2016Inventors: Willy HANDLOSER, Thomas WELSCHINGER, Heike TISCHLER
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Publication number: 20160160871Abstract: An axially split pump for conveying a fluid includes an axially split housing with a bottom part and a cover. The bottom part has a first sealing surface and the cover has a second sealing surface. The bottom part and the cover are fastened to one another so that the two sealing surfaces are in direct contact with one another. At least one first sealing groove for the reception of a first sealing element is disposed in the sealing surfaces. A second sealing groove is disposed for the reception of a second sealing element. The first sealing groove and the second sealing groove are connected to one another through a connection region and an elastic pre-loading element is disposed in the connection region, which exerts a pre-load onto one of the two sealing elements.Type: ApplicationFiled: November 20, 2015Publication date: June 9, 2016Inventors: Thomas WELSCHINGER, Heike TISCHLER, Berthold VOGEL