公开(公告)号：US20250020210A1

公开(公告)日：2025-01-16

申请号：US18834893

申请日：2023-02-01

Applicant: NOK CORPORATION

Inventor： Kakeru OKOCHI

IPC: F16J15/18 ,  F16J15/20 ,  F16J15/3204

Abstract: A sealing device is configured to seal a clearance between a housing and a shaft of a hydraulic cylinder. The sealing device includes an annular packing that is disposed within the clearance and comprises an elastic material, and a back-up ring that is in contact with the packing. The back-up ring has a contact surface that is in contact with the shaft, and a portion including at least the contact surface of the back-up ring comprises a resin composition that includes a base material and a filler material. The base material comprises a polyamide resin, and the filler material comprises a polyolefin resin that is compatible with the polyamide resin.

公开(公告)号：US20250012361A1

公开(公告)日：2025-01-09

申请号：US18891099

申请日：2024-09-20

Applicant: Trelleborg Sealing Solutions Germany GmbH

Inventor： Tobias Corneli ,  Holger Jordan ,  Mandy Wilke

IPC: F16J15/20 ,  F16C3/02

Abstract: A shaft sealing kit for a sealing gap is formed between a shaft and a machine part engaging around the shaft. A foam ring of an elastically deformable foam material can be arranged in the sealing gap to be sealed off. The shaft sealing kit also has a kneading ring, which can be arranged in a rotationally fixed manner on the shaft and has a main body away from which there at least one cam extends which cam serves for locally compressing the foam material of the foam ring in the assembled state of the shaft sealing kit. A shaft arrangement can include a shaft sealing kit or a plurality of such shaft sealing kits.

公开(公告)号：US11892005B2

公开(公告)日：2024-02-06

申请号：US17832797

申请日：2022-06-06

Applicant: Danfoss A/S

Inventor： Stig Kildegaard Andersen ,  Poul Erik Hansen ,  Achuthan Babu

IPC: F04D29/04 ,  F04D29/08 ,  F04D29/046 ,  F16J15/20 ,  B33Y80/00

CPC classification number: F04D29/0465 ,  F04D29/086 ,  F16J15/20 ,  B33Y80/00

Abstract: A hydraulic machine includes a first member (1) having a first structure (2) for a hydraulic medium opening in a first interface surface (3) and a second member having a second structure for the hydraulic medium opening in a second interface surface is described, the first interface surface (3) being in contact with the second interface surface, wherein at least one of the members (1) is provided with a support element (6) surrounding the member (1). Such a machine should have a good efficiency. To this end the support element (6) has a strength varying in circumferential direction around the member (1) and/or in thickness direction in a middle region of the member (1).

公开(公告)号：US11841092B2

公开(公告)日：2023-12-12

申请号：US17961560

申请日：2022-10-07

Applicant: Baoyi Group Co., Ltd.

Inventor： Changxiang Xu ,  Xiaozhong Zhang

IPC: F16K41/04 ,  F16J15/16 ,  F16K5/06 ,  F16J15/18 ,  F16J15/24 ,  F16K41/02 ,  F16J15/20 ,  F16K41/06 ,  F16J15/3284

CPC classification number: F16K41/046 ,  F16J15/166 ,  F16J15/186 ,  F16J15/20 ,  F16J15/24 ,  F16K5/0689 ,  F16K5/0694 ,  F16K41/026 ,  F16K41/06 ,  F16J15/3284

Abstract: A pressure-tight stein cylinder seal and a self-energizing stein shoulder seal matching the stein cylinder seal that both use an equilaterally triangular soft ring as their sealing element, wherein their designing rules are first, by means of wedging function of a hard gland coaxial with the stein cylinder, to convert their original axial tightening force 2f respectively into a radial compression force 4f/√3 of their soft ring 04 on the stein 02 cylinder and another radial compression force 2f of their soft ring 06 on the stein 02 shoulder and ensure that the two soft rings are so compressed from a great room to a small room as to be able to pass a pressure or stress exactly to each different direction, then to cut off their off-stein corners to give their cavities an opening or give each soft ring an axial compressing allowance, and last, by means of anti-extrusion metallic C-rings without axial resistance, to close each opening to provide a full support for the sealing deformation of their soft rings compressed in their cavities.

公开(公告)号：US11584873B2

公开(公告)日：2023-02-21

申请号：US16763467

申请日：2018-10-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kentaro Komori ,  Gakuyo Fujimoto

IPC: C09K3/10 ,  C08G18/76 ,  C08K5/11 ,  F16F9/36 ,  F16J15/20

Abstract: A sealing member according to the present invention is a sealing member against a synthetic oil containing an ester-type additive, and includes 95.0% by mass or more and 99.5% by mass or less of a para-phenylene diisocyanate-based polyurethane and 0.5% by mass or more and 5% by mass or less of a same compound as the ester-based additive. The sealing member according to the present invention has a smaller friction coefficient and more excellent deformability than conventional sealing members and that can inhibit swelling caused by a synthetic oil.

公开(公告)号：US11460112B2

公开(公告)日：2022-10-04

申请号：US16286003

申请日：2019-02-26

Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION

Inventor： Jon M. Lenhert ,  Robert T. Racicot ,  Kha V. Le

IPC: F16J15/3284 ,  F16J15/3212 ,  F16J15/3236 ,  F16J15/16 ,  F16J15/18 ,  F16J15/20

Abstract: A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft.

公开(公告)号：US20220136606A1

公开(公告)日：2022-05-05

申请号：US17083729

申请日：2020-10-29

Applicant: Aptiv Technologies Limited

Inventor： John Morello ,  James M. Rainey

IPC: F16J15/20 ,  F16J15/3284 ,  H01R13/52

Abstract: A dispensing seal includes a base seal comprised of a first material. The base seal includes at least a top surface and a bottom surface and a cavity defined therein, wherein the bottom surface includes an opening to the cavity. A second material is located within the cavity of the base seal, wherein a viscosity of the second material is less than a viscosity of the first material.

公开(公告)号：US10995858B2

公开(公告)日：2021-05-04

申请号：US16318693

申请日：2017-10-11

Applicant: IIDA Co., Ltd.

Inventor： Shuichi Nowatari

IPC: F16J15/24 ,  F16J15/26 ,  F16J15/18 ,  F16J15/20 ,  F16J15/56

Abstract: This seal structure 1 is provided with an annular seal member 2, a shaft member 4 having a seal groove 5 where the inner peripheral side of said seal member 2 is arranged, and an inner peripheral wall member 6 which has an internal space surrounded by an inner peripheral wall 61, wherein the shaft member 4 is arranged in the internal space 62, and the annular seal member 2 is arranged in the seal groove 5 of the shaft member 4. The side of the outer periphery 21 of the annular seal member 2 is formed by overlapping, in the axial direction D1, a plurality of ring-shape parts 3 which are closed or unclosed when viewed in a radial direction D2; when viewed in the radial direction D2, on one side of a center axis C1 of the annular seal member 2, in a longitudinal cross-section of the plurality of ring-shape parts 3, one corner 32 of the two corners of the edge 31 facing the inner peripheral wall 61 of the inner peripheral wall member 6 contacts the inner peripheral wall 61 of the inner peripheral wall member 6.

公开(公告)号：US10436372B2

公开(公告)日：2019-10-08

申请号：US15728320

申请日：2017-10-09

Applicant: TDW Delaware, Inc.

Inventor： Vigmund Bjorsvik ,  Marko Langerholc

IPC: F16J15/02 ,  F16L55/128 ,  F16L55/44 ,  F16J15/06 ,  F16J15/16 ,  F16J15/20 ,  F16J15/46 ,  F16L55/132 ,  F16J15/00 ,  E21B33/12

Abstract: A large-gap-seal (“LGS”) assembly and methods for its assembly and use are described. The LGS assembly has an elastomer core surrounded by adjoining structural segments. Non-adjoining gap segments are located on the sidewall surfaces of the elastomer core, with each gap segment approximately centered beneath the edges of two adjoining structural segments. The gap segments are exposed by the spaces that form between the structural segments when the LGS assembly is activated. Exposing the gap segments rather than the elastomer core protects the elastomer core from damage and preserves the integrity of the seal between the isolation tool and the inner wall of the pipeline.

公开(公告)号：US20190137002A1

公开(公告)日：2019-05-09

申请号：US15808530

申请日：2017-11-09

Applicant: Fisher Controls International LLC

Inventor： Kyle Anthony Hausladen ,  Bradley Steve Tibben

IPC: F16K41/04 ,  F16J15/20 ,  F16L23/18

Abstract: Valve packing installation apparatus and related methods for use with fluid valves are disclosed. An apparatus includes a tube to receive a stack of packing components. The tube has a first end and a second end. A plunger is disposed within the tube adjacent the second end. The plunger is slidable toward the first end to expel the stack of packing components into a valve in a predetermined order associated with an installation sequence.