公开(公告)号：US20240401578A1

公开(公告)日：2024-12-05

申请号：US18701756

申请日：2022-09-30

Applicant: MIXTRON S.R.L.

Inventor： Stefano BREVINI ,  Renato BREVINI

IPC: F04B9/105 ,  F04B13/02 ,  F16J1/00 ,  G01F11/02

Abstract: A proportional volumetric dosing unit (1) is described comprising a pump (25) provided with a piston (235) adapted to supply an auxiliary fluid to a motor (20) of the proportional volumetric dosing unit itself, which moves the piston (235) of the pump and is fluidly connected to an inlet conduit (10) of a main fluid and an outlet conduit (15) of a mixed fluid, said motor comprising a piston (30) slidably housed in a cylinder (100) of the motor and connected to the piston (235) of the pump to move it, wherein the piston (30) comprises an annular scaling lip (80) protruding from a top (55) of the piston (30), and an end portion thereof distal from the top of the piston is applied in contact to the cylinder (100) making a fluid seal, said proportional volumetric dosing unit being characterized in that it comprises an elastic element (130) which pushes the annular sealing lip (80) against the cylinder (100).

公开(公告)号：US12117025B2

公开(公告)日：2024-10-15

申请号：US17698391

申请日：2022-03-18

Applicant: James D. Rosplock

Inventor： James D. Rosplock

IPC: F15B15/14 ,  F15B21/0423 ,  F16J1/00 ,  F16J10/02 ,  F16J15/16 ,  F15B15/28

CPC classification number: F15B15/1485 ,  F15B15/1442 ,  F15B15/1461 ,  F15B15/1466 ,  F16J1/008 ,  F16J10/02 ,  F16J15/162 ,  F15B15/1452 ,  F15B15/149 ,  F15B15/2815 ,  F15B21/0423

Abstract: Disclosed are seal arrangements in a hydraulic device. The seal arrangement includes a seal channel defining a loop. A seal is seated within the seal channel. A coolant flow passage has a first part intersecting with the seal channel at a first point and a second part intersecting with the seal channel at a second point. The first part of the coolant flow passage is configured to provide hydraulic fluid to the seal channel such that, at the first point, a first portion of the hydraulic fluid flows in a first direction around the loop and a second portion of the hydraulic fluid flows in a second direction opposite to the first direction around the loop. At the second point, the first portion of hydraulic fluid and the second portion of hydraulic fluid are configured to flow into the second part of the coolant flow passage.

公开(公告)号：US12078247B2

公开(公告)日：2024-09-03

申请号：US18160990

申请日：2023-01-27

Applicant: KS Kolbenschmidt GmbH

Inventor： Matthias Laqua ,  Klaus Bacher

IPC: F16J1/00 ,  B23K26/28

CPC classification number: F16J1/005 ,  B23K26/28

Abstract: Piston blank for a piston, comprising a piston lower part, which comprises a first joining surface running around a central axis of the piston blank, and a piston upper part, which comprises a second joining surface running around the central axis and an inner surface running around the central axis and adjoining the second joining surface as viewed along the central axis, wherein the piston upper part can be placed with its second joining surface on the first joining surface, and wherein a tangential plane which is assigned to the second joining surface is inclined relative to the central axis such that the tangential plane intersects the inner surface.

公开(公告)号：US20240052927A1

公开(公告)日：2024-02-15

申请号：US18351176

申请日：2023-07-12

Applicant: Transcend Energy Group, LLC

Inventor： Jon Woodward

IPC: F16J1/00 ,  F16J1/14

CPC classification number: F16J1/005 ,  F16J1/14

Abstract: A piston assembly includes a piston head. The piston assembly further includes an upper connecting rod rotatably coupled to the piston head. The piston assembly also includes a shoe positioned between the upper connecting rod and an inner wall of the piston head.

公开(公告)号：US11686199B2

公开(公告)日：2023-06-27

申请号：US17825928

申请日：2022-05-26

Applicant: Aquarius Engines (A.M.) Ltd.

Inventor： Shaul Haim Yaakoby

IPC: F01B1/00 ,  F01L7/02 ,  F01N13/10 ,  F02B71/00 ,  F02B71/04 ,  F02B75/00 ,  F02F1/00 ,  F02F1/06 ,  F02F1/22 ,  F02F1/24 ,  F02F3/00 ,  F02F3/28 ,  F02M35/10 ,  F02M61/14 ,  F16J1/00 ,  F16J1/12 ,  F16J7/00 ,  F16J9/06 ,  F16J9/12 ,  F16J9/20 ,  F01B11/00 ,  F01B7/20 ,  F01N3/26 ,  F02B1/04 ,  F02B3/06 ,  F02B75/30

CPC classification number: F01B11/001 ,  F01L7/02 ,  F01N13/10 ,  F02B71/00 ,  F02B71/04 ,  F02B75/002 ,  F02F1/00 ,  F02F1/06 ,  F02F1/22 ,  F02F1/24 ,  F02F3/0015 ,  F02F3/28 ,  F02M35/1015 ,  F02M61/14 ,  F16J1/005 ,  F16J1/008 ,  F16J1/12 ,  F16J7/00 ,  F16J9/06 ,  F16J9/12 ,  F16J9/20 ,  F01B7/20 ,  F01N3/26 ,  F02B1/04 ,  F02B3/06 ,  F02B75/30

Abstract: An internal combustion may include a cylinder having a first combustion chamber at one end and a second combustion chamber at an opposing end, first and second cylinder heads located at an end of the first and second combustion chambers, respectively, and a double-faced piston slidably mounted therein. The piston may be configured to move in a first stroke that includes an expansion stroke portion and a non-expansion stroke portion. The engine may further include first and second piston rod portions extending from opposite faces of the piston. A recess in the piston rod portions may be configured to communicate gases between a combustion chamber and locations outside the cylinder. There may also be a chamber surrounding the first or second piston rod portion, the chamber configured to be supplied with gas and the chamber being isolated from the first combustion chamber and the second combustion chamber.

公开(公告)号：US11649812B2

公开(公告)日：2023-05-16

申请号：US17217835

申请日：2021-03-30

Applicant: Vianney Rabhi

Inventor： Vianney Rabhi

IPC: F04B39/00 ,  F16J1/00 ,  F04B53/14

CPC classification number: F04B39/0005 ,  F04B53/143 ,  F16J1/005

Abstract: The hydraulic piston with a depressurized groove is capable of translating in a cylinder and includes a fixed skirt, an axial compression face which forms with the cylinder a fluid chamber, and an axial working face which cooperates with a transmission; the piston also includes a seal, a depressurized radial groove emerging onto the surface of the fixed skirt, an axial decompression duct fitted inside the skirt which emerges in the vicinity of the axial working face, and a radial decompression duct which depressurizes the radial groove in communication with the axial decompression conduit.

公开(公告)号：US11643991B2

公开(公告)日：2023-05-09

申请号：US16931298

申请日：2020-07-16

Applicant: AI ALPINE US BIDCO INC

Inventor： Richard John Donahue ,  James Richard Zurlo

IPC: F02F3/24 ,  F16J1/00 ,  F16J9/22 ,  F02F3/00 ,  F02F3/02

CPC classification number: F02F3/24 ,  F16J1/00 ,  F16J1/001 ,  F16J9/22 ,  F02F3/00 ,  F02F3/02

Abstract: A power cylinder system for a reciprocating engine includes a piston configured to move within a cylinder of the reciprocating engine. The system also includes a groove extending circumferentially about the piston and configured to support a ring. An axially-facing surface of the groove has circumferential undulations at ambient temperatures that are configured to compensate for distortions to the groove caused by operation of the reciprocating engine.

公开(公告)号：US11577326B2

公开(公告)日：2023-02-14

申请号：US16910675

申请日：2020-06-24

Applicant: Kennametal Inc.

Inventor： Josef K. Herud

IPC: F16J1/00 ,  B23B31/30 ,  F16J15/3224

Abstract: The invention relates to a sealing piston, which is designed for use in a hydraulic expansion chucking device. The sealing piston comprises a pin that extends in an axial direction (A), and a seal that adjoins the pin and likewise extends in said axial direction (A). The seal comprises a sealing shaft that adjoins the pin and has a shaft radius (Rs). The seal further comprises a sealing head that adjoins the sealing shaft, wherein the sealing head comprises a circumferential sealing lip, which has a sealing radius (Rd) that is greater than the shaft radius (Rs). The sealing lip forms a contact surface in radial direction (R) for abutment and sealing against an inner wall of a bore in the expansion chucking device, and, measured in axial direction (A), has a sealing length (Ld) that is greater than the difference between the sealing radius (Rd) and the shaft radius (Rs). The invention further relates to a corresponding expansion chucking device.

公开(公告)号：US11572128B2

公开(公告)日：2023-02-07

申请号：US16877873

申请日：2020-05-19

Applicant: Shimano Inc.

Inventor： Kohei Obuchi ,  Yasuyuki Komada ,  Nobuyoshi Fujii

IPC: B62L3/02 ,  F16J1/00

Abstract: A piston assembly is provided for a human-powered vehicle. The piston assembly includes a main body, a primary seal and a secondary seal. The main body is configured to be movable from a rest position to an actuated position along an actuation direction in a cylinder bore. The primary seal includes a primary seal body arranged on the main body, the primary seal body being made of the first seal material. The secondary seal includes a secondary seal body arranged on the main body at upstream of the primary seal with respect to the actuation direction. The secondary seal body is made of a second seal material that is more elastic than the first seal material.

公开(公告)号：US20220356834A1

公开(公告)日：2022-11-10

申请号：US17661778

申请日：2022-05-03

Applicant: Cummins Inc.

Inventor： Adam C. Cecil

IPC: F01P3/08 ,  F02F3/18 ,  F16J1/00 ,  F16J1/18

Abstract: Pistons and piston assemblies for an internal combustion engine is provided. The piston assembly includes a piston coupled to a connecting rod with a piston pin. The piston pin includes a non-circular outer cross-sectional shape.