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公开(公告)号：US12055222B2
公开(公告)日：2024-08-06
申请号：US17956043
申请日：2022-09-29
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen , Tom Steigerwald , Syed Niamathullah , Dan Kozlowski , James R. Wasser , Michael G. Kalodimos
CPC classification number: F16J15/363 , F16J15/348 , F01D1/00 , F16J15/002 , F16J15/32 , F16J15/38
Abstract: A non-collapsible flexible sealing membrane (or bellows) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion, which can be urged into an axially shiftable ring by a biasing mechanism. The sealing membrane further includes a substantially axially outboard extending second coaxial portion, substantially radially inward of the balance diameter of the seal. The horizontal portion is advantageously held fixed to a stub sleeve by an annular band. The angle between the vertical portion and the horizontal portion of sealing membrane enables directional control of the forces acting on stub sleeve and primary ring.
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公开(公告)号：US20220136607A1
公开(公告)日：2022-05-05
申请号：US17360288
申请日：2021-06-28
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen
Abstract: A mechanical seal assembly adapted for arrangement around a rotating shaft of a rotating device and has first and a second seal rings. The assembly also includes an annular carrier having a base and a removable end portion configured to be affixed to a housing of the rotating device. The assembly also includes an annular flexible sealing membrane. The membrane includes an outer portion arrangeable between the first seal ring and a biasing mechanism and that is axially shiftable relative to the rotating shaft. The membrane also includes an inner portion surrounded by the outer portion and positioned between the base and the removable end portion of the annular carrier and the base and a removable end portions hold the inner portion in fixed relative to the annular carrier as the outer portion shifts relative to the rotating shaft.
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公开(公告)号：US11761542B2
公开(公告)日：2023-09-19
申请号：US17718425
申请日：2022-04-12
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen
IPC: F16J15/34
CPC classification number: F16J15/3452
Abstract: A double seal includes two sliding seals. The seals can be non-pusher secondary seals (NPSS). In one embodiment, by employing an NPSS as the chamber side seal can handle large pressure reversals where the inner diameter pressure (pressure in the chamber) spikes and exceeds the outer diameter pressure that is provided between the two seals forming the double seal.
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Patent Agency Ranking
公开(公告)号：US20220333691A1
公开(公告)日：2022-10-20
申请号：US17718425
申请日：2022-04-12
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen
IPC: F16J15/34
Abstract: A double seal includes two sliding seals. The seals can be non-pusher secondary seals (NPSS). In one embodiment, by employing an NPSS as the chamber side seal can handle large pressure reversals where the inner diameter pressure (pressure in the chamber) spikes and exceeds the outer diameter pressure that is provided between the two seals forming the double seal.
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公开(公告)号：US11808359B2
公开(公告)日：2023-11-07
申请号：US17360288
申请日：2021-06-28
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen
CPC classification number: F16J15/38 , F16J15/3464
Abstract: A mechanical seal assembly adapted for arrangement around a rotating shaft of a rotating device and has first and a second seal rings. The assembly also includes an annular carrier having a base and a removable end portion configured to be affixed to a housing of the rotating device. The assembly also includes an annular flexible sealing membrane. The membrane includes an outer portion arrangeable between the first seal ring and a biasing mechanism and that is axially shiftable relative to the rotating shaft. The membrane also includes an inner portion surrounded by the outer portion and positioned between the base and the removable end portion of the annular carrier and the base and a removable end portions hold the inner portion in fixed relative to the annular carrier as the outer portion shifts relative to the rotating shaft.
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公开(公告)号：US20230028905A1
公开(公告)日：2023-01-26
申请号：US17956043
申请日：2022-09-29
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen , Tom Steigerwald , Syed Niamathullah , Dan Kozlowski , James R. Wasser , Michael G. Kalodimos
Abstract: A non-collapsible flexible sealing membrane (or bellows) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion, which can be urged into an axially shiftable ring by a biasing mechanism. The sealing membrane further includes a substantially axially outboard extending second coaxial portion, substantially radially inward of the balance diameter of the seal. The horizontal portion is advantageously held fixed to a stub sleeve by an annular band. The angle between the vertical portion and the horizontal portion of sealing membrane enables directional control of the forces acting on stub sleeve and primary ring.
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公开(公告)号：US11473680B2
公开(公告)日：2022-10-18
申请号：US16842004
申请日：2020-04-07
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen , Tom Steigerwald , Syed Niamathullah , Dan Kozlowski , James R. Wasser , Michael G. Kalodimos
Abstract: A non-collapsible flexible sealing membrane (or bellows) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion, which can be urged into an axially shiftable ring by a biasing mechanism. The sealing membrane further includes a substantially axially outboard extending second coaxial portion, substantially radially inward of the balance diameter of the seal. The horizontal portion is advantageously held fixed to a stub sleeve by an annular band. The angle between the vertical portion and the horizontal portion of sealing membrane enables directional control of the forces acting on stub sleeve and primary ring.
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8.发明申请公开(公告)号：US20200232562A1
公开(公告)日：2020-07-23
申请号：US16842004
申请日：2020-04-07
Applicant: John Crane Inc.
Inventor： Darin Merrill Rasmussen , Tom Steigerwald , Syed Niamathullah , Dan Kozlowski , James R. Wasser , Michael G. Kalodimos
Abstract: A non-collapsible flexible sealing membrane (or bellows) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion, which can be urged into an axially shiftable ring by a biasing mechanism. The sealing membrane further includes a substantially axially outboard extending second coaxial portion, substantially radially inward of the balance diameter of the seal. The horizontal portion is advantageously held fixed to a stub sleeve by an annular band. The angle between the vertical portion and the horizontal portion of sealing membrane enables directional control of the forces acting on stub sleeve and primary ring.
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