公开(公告)号：US11703047B2

公开(公告)日：2023-07-18

申请号：US17204593

申请日：2021-03-17

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman

IPC: F04B53/10 ,  F04B39/04 ,  F04B43/08 ,  F04B53/14 ,  F16K15/04 ,  F04B19/22 ,  F16K17/04

CPC classification number: F04B53/1005 ,  F04B39/047 ,  F04B43/084 ,  F04B53/1002 ,  F04B19/22 ,  F04B53/143 ,  F16K15/044 ,  F16K17/0406 ,  F16K17/048

Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.

公开(公告)号：US10982665B2

公开(公告)日：2021-04-20

申请号：US15381772

申请日：2016-12-16

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman

IPC: F04B43/08 ,  F04B53/14 ,  F16K24/04 ,  F16K15/04 ,  F04B53/10 ,  F04B43/00 ,  F04B19/22 ,  F16K17/04 ,  F04B39/04

Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.

公开(公告)号：US20170175734A1

公开(公告)日：2017-06-22

申请号：US15381753

申请日：2016-12-16

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman ,  Andrew J. Klaphake

IPC: F04B53/14 ,  F04B43/00 ,  F04B53/16 ,  F04B43/08

CPC classification number: F04B53/147 ,  F04B15/02 ,  F04B43/0072 ,  F04B43/08 ,  F04B53/143 ,  F04B53/144 ,  F04B53/16 ,  F16J3/048

Abstract: A reciprocating pump includes a housing, a rod, and a bellows. The housing surrounds a bellows chamber and a displacement chamber. A portion of the rod extends through the opening in the endcap and into the bellows chamber of the housing. A cross-section of the rod includes a lobed shape. The bellows is connected to the housing and to the rod such that the bellows surrounds a portion of the rod.

公开(公告)号：US20230271211A1

公开(公告)日：2023-08-31

申请号：US18018026

申请日：2021-07-21

Applicant: Graco Minnesota Inc.

Inventor： Jason J. Willoughby ,  Timothy S. Roman ,  David C. Polovitz ,  Willem M. Tieleman

IPC: B05B12/08 ,  G05D16/00 ,  G05D16/06

CPC classification number: B05B12/088 ,  G05D16/024 ,  G05D16/0655

Abstract: A back pressure regulator (“BPR”) includes a pressure housing that at least partially defines a flow chamber that the liquid flows through and the BPR has an adjustable restriction that varies with the flow rate to maintain an upstream liquid pressure. The pressure housing is contoured to distribute the liquid flow to provide radial flow into the adjustable restriction from circumferentially about the adjustable restriction. The pressure housing includes ramped and curved side passages that guide the flow and ridges that divide the flow and prevent internal collisions between the flow. A flow deflector extends into the chamber outlet to prevent the radial flows through the annular restriction from colliding. The flow deflector redirects the flows to smoothly recombine in the chamber outlet.

公开(公告)号：US20170175727A1

公开(公告)日：2017-06-22

申请号：US15381782

申请日：2016-12-16

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman

IPC: F04B43/08 ,  F04B53/16 ,  F04B53/14 ,  F04B53/10

CPC classification number: F04B43/08 ,  F04B15/02 ,  F04B53/1002 ,  F04B53/143 ,  F04B53/144 ,  F04B53/147 ,  F04B53/16 ,  F16J15/52

Abstract: A reciprocating pump includes a housing, a rod, a sleeve, a bellows, and a nut. The housing includes a bellows chamber and a working chamber. The rod extends into the reciprocating pump such that the rod extends through the bellows chamber and partly into the working chamber. The rod includes a shoulder. The sleeve is connected to the rod such that the sleeve surrounds a portion of the rod. The bellows is connected to the sleeve such that the bellows surrounds a portion of the sleeve. The nut is attached to a bottom end of the sleeve such that the nut clamps an end of the bellows to the bottom end of the sleeve.

公开(公告)号：US12129843B2

公开(公告)日：2024-10-29

申请号：US17694252

申请日：2022-03-14

Applicant: Graco Minnesota Inc.

Inventor： Jason J. Willoughby ,  David M. Behrens ,  Timothy S. Roman

IPC: F04B43/06 ,  F04B43/00 ,  F04B43/073 ,  F04B45/04 ,  F04B45/053 ,  F04B53/06 ,  F04B53/10 ,  F04B45/047

CPC classification number: F04B43/06 ,  F04B43/0081 ,  F04B43/0736 ,  F04B45/043 ,  F04B45/0533 ,  F04B45/0536 ,  F04B53/06 ,  F04B53/1002 ,  F04B45/047

Abstract: A positive displacement pump includes a housing surrounding a drive chamber and a diaphragm compartment. A drive element is inside the drive chamber. A diaphragm is inside the diaphragm compartment and divides the diaphragm compartment into a fluid chamber and a cavity. A shaft connects the drive element and the diaphragm. A breather valve is fluidically connected to the cavity and is configured to allow air to exit the cavity. The cavity is fluidically disconnected from the drive chamber.

公开(公告)号：US10344751B2

公开(公告)日：2019-07-09

申请号：US15381782

申请日：2016-12-16

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman

IPC: F04B43/08 ,  F04B53/16 ,  F04B53/14 ,  F04B53/10 ,  F04B15/02 ,  F16J15/52

Abstract: A reciprocating pump includes a housing, a rod, a sleeve, a bellows, and a nut. The housing includes a bellows chamber and a working chamber. The rod extends into the reciprocating pump such that the rod extends through the bellows chamber and partly into the working chamber. The rod includes a shoulder. The sleeve is connected to the rod such that the sleeve surrounds a portion of the rod. The bellows is connected to the sleeve such that the bellows surrounds a portion of the sleeve. The nut is attached to a bottom end of the sleeve such that the nut clamps an end of the bellows to the bottom end of the sleeve.

公开(公告)号：US20170175733A1

公开(公告)日：2017-06-22

申请号：US15381723

申请日：2016-12-16

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman ,  Andrew J. Klaphake

IPC: F04B53/14 ,  F16C33/20 ,  F16C29/02 ,  F04B43/08 ,  F04B53/16

CPC classification number: F04B53/144 ,  F04B1/0448 ,  F04B9/10 ,  F04B9/12 ,  F04B39/041 ,  F04B43/08 ,  F04B53/008 ,  F04B53/14 ,  F04B53/146 ,  F04B53/147 ,  F04B53/16 ,  F04B53/22 ,  F16C29/02 ,  F16C33/201 ,  F16C2208/78 ,  F16C2360/42

Abstract: A reciprocating pump includes a housing, a rod, a bellows, and a bearing. The housing surrounds a bellows chamber and a displacement chamber. A first portion of the rod extends into the bellows chamber. The bellows has a first end connected to the housing and a second end connected to the rod. The bellows surrounds a second portion of the rod. The bellows includes a plurality of convolutions. The bearing is disposed within the bellows between the bellows and the rod.

公开(公告)号：US11499543B2

公开(公告)日：2022-11-15

申请号：US17057481

申请日：2019-05-22

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman

IPC: F15B1/04 ,  F04B49/22 ,  F04B45/053 ,  F04B49/08 ,  F04B53/06 ,  F04B53/12 ,  F04B11/00

Abstract: A surge suppressor includes a boost mechanism configured to balance pressures between a working fluid and a process fluid. The boost mechanism includes a boost member that is acted on by a charge pressure of the working fluid. A shaft extends from the boost member to a pressure control member bounding the process fluid and acting on the process fluid. The boost member can have a larger effective area than the pressure control member to provide a pressure multiplication between the charge pressure and the process fluid pressure. In addition, pressure control valves are mounted to an air housing and actuated open by the boost mechanism. Actuating one of the pressure control valves open increases the charge pressure. Actuating the other pressure control valve open decreases the charge pressure.

公开(公告)号：US20210310481A1

公开(公告)日：2021-10-07

申请号：US17057481

申请日：2019-05-22

Applicant: Graco Minnesota Inc.

Inventor： Timothy S. Roman

IPC: F04B49/22 ,  F04B49/08 ,  F04B45/053 ,  F04B53/06 ,  F04B53/12

Abstract: A surge suppressor includes a boost mechanism configured to balance pressures between a working fluid and a process fluid. The boost mechanism includes a boost member that is acted on by a charge pressure of the working fluid. A shaft extends from the boost member to a pressure control member bounding the process fluid and acting on the process fluid. The boost member can have a larger effective area than the pressure control member to provide a pressure multiplication between the charge pressure and the process fluid pressure. In addition, pressure control valves are mounted to an air housing and actuated open by the boost mechanism. Actuating one of the pressure control valves open increases the charge pressure. Actuating the other pressure control valve open decreases the charge pressure.