Patents by Inventor Dale F. Marshall
Dale F. Marshall 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: 7140109Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: GrantFiled: February 5, 2004Date of Patent: November 28, 2006Assignee: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Patent number: 7066653Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: GrantFiled: May 2, 2002Date of Patent: June 27, 2006Assignee: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Patent number: 7018104Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: GrantFiled: February 5, 2004Date of Patent: March 28, 2006Assignee: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Publication number: 20040161180Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: ApplicationFiled: February 5, 2004Publication date: August 19, 2004Applicant: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Publication number: 20040156566Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: ApplicationFiled: February 5, 2004Publication date: August 12, 2004Applicant: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Patent number: 6637942Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: GrantFiled: October 3, 2001Date of Patent: October 28, 2003Assignee: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Publication number: 20030063822Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: ApplicationFiled: May 2, 2002Publication date: April 3, 2003Applicant: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Publication number: 20030063821Abstract: A bearing assembly and method in which a bearing cage is disposed around a rotating member and a housing is disposed around the cage. A first portion of the radial outer surface of the cage extends in a slightly spaced relation to the corresponding portion of the inner surface of the housing, and a second portion of the radial outer surface of the cage projects from the first portion in a radial direction and engages the corresponding portion of the inner surface of the housing.Type: ApplicationFiled: October 3, 2001Publication date: April 3, 2003Applicant: Dresser-Rand CompanyInventors: Herve H. Dourlens, Dale F. Marshall, Philippe Auber
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Patent number: 5403019Abstract: A free floating labyrinth ring seal is sized to fit within a cavity to seal against a rotatable shaft to control excessive leakage of gas between high and low pressure chambers such as in a turbo machine. The seal is comprised of an elastomeric ring-shaped body with spaced opposing high and low pressure walls and a labyrinth seal surface extending therebetween for sealing with the shaft. The Walls have portions defining opposing surfaces of unequal area for pressure-balancing against each other within the cavity with a controlled gas flow clearance between the seal body and the walls of the cavity so that the seal body is substantially free to float with vibration of the shaft while maintaining close tolerance sealing between the labyrinth surface and the shaft as the latter rotates.Type: GrantFiled: May 3, 1993Date of Patent: April 4, 1995Assignee: Dresser-Rand CompanyInventor: Dale F. Marshall
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Patent number: 4822240Abstract: A compressor includes a rotor which is subject on the inlet side to high pressure process fluid whereas the other end of the rotor is subject to atmospheric pressure. This creates a force unbalance in the axial direction for which thrust bearings are designed under dynamic operating conditions. At start-up and shutdown, periods of low speed operation, force unbalance is particularly acute since the normal impeller high speed reactive forces are not present. This invention utilizes available high pressure seal fluid during periods of low speed operation to provide a closed operating chamber which will provide a static reactive force opposing the process fluid force. Under normal operating conditions, lubricating oil is then sent to the thrust bearing as the high pressure seal fluid is relieved.Type: GrantFiled: March 11, 1988Date of Patent: April 18, 1989Assignee: General Electric CompanyInventor: Dale F. Marshall
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Patent number: 4413946Abstract: To provide reduction in temporary conditions of excess load on the thrust bearing, a labyrinth positioned contiguous to a leakage aperture in the high pressure side of a single stage overhung compressor rotor affords controlled leakage to a venting circuit in communication with a lower pressure system. A pressure switch responsive to pressure levels in the venting circuit prevents compressor start at pressures above the set point of the switch while a backpressure valve in the venting circuit when operative maintains a predetermined pressure level therein. When the thrust bearing is operating at speeds sufficient to enable acceptance of the load imposed by compressor pressure, an override solenoid valve serves to close the backpressure valve and operably shut the venting circuit.Type: GrantFiled: August 20, 1981Date of Patent: November 8, 1983Assignee: Dresser Industries, Inc.Inventors: Dale F. Marshall, Ted C. Evans