公开(公告)号：US20210148346A1

公开(公告)日：2021-05-20

申请号：US16951844

申请日：2020-11-18

Applicant: Kerr Machine Co.

Inventor： Kelcy Jake Foster ,  Micheal Cole Thomas ,  Christopher Todd Barnett ,  Nicholas Son ,  John Keith ,  Mark S. Nowell ,  Guy J. Lapointe ,  Michael Eugene May

IPC: F04B17/00 ,  F04B53/00 ,  F04B53/14 ,  F04B53/18

Abstract: A power end assembly includes a crankshaft section, a crosshead section, and a connector section coupled together by one, two, or more sets of stay rods. The power end may include one or more support plates that are coupled to the crankshaft section and/or crosshead section. The crosshead section includes a plurality of individual crosshead frames, The connector section may include a plurality of individual connector plates or may be a unitary connector plate. The power end is configured to be coupled to a fluid end assembly by coupling the fluid end assembly to the connector plates.

公开(公告)号：US20210108734A1

公开(公告)日：2021-04-15

申请号：US17120121

申请日：2020-12-12

Applicant: Kerr Machine Co.

Inventor： Mark S. Nowell ,  Kelcy Jake Foster ,  Michael Eugene May ,  Brandon Scott Ayres ,  Christopher Todd Barnett ,  Micheal Cole Thomas ,  Guy J. Lapointe

IPC: F16K5/18 ,  F15B7/06 ,  F16K5/04 ,  F16J15/06 ,  F15B21/00 ,  F16K5/16 ,  F16K5/02 ,  F04B53/22 ,  F04B53/16

Abstract: Apparatus and method contemplating a high pressure fluid end assembly having a body defining a body bore and defining a groove in the body intersecting the body bore. A closure is joined to the body and forms a sealing surface. A seal is mounted to the body in the groove and configured to extend from the groove beyond the body bore to seal against the sealing surface formed by the closure.

公开(公告)号：US10941765B2

公开(公告)日：2021-03-09

申请号：US16708773

申请日：2019-12-10

Applicant: Kerr Machine Co.

Inventor： Mark S. Nowell ,  Kelcy J. Foster ,  Christopher Todd Barnett ,  Brandon Scott Ayres ,  Michael Eugene May ,  Guy J. Lapointe ,  Micheal Cole Thomas

IPC: F04B53/16 ,  E21B43/26 ,  F04B37/12 ,  F04B53/00 ,  F04B53/22

Abstract: A flangeless fluid end comprising a fluid end body releasably attached to a connect plate. The connect plate is attached to a power source using stay rods. The flow bores of the fluid end are sealed without threading a retainer nut into the walls of each bore. Instead, the flow bores are sealed by bolting a retainer to the fluid end body. Plungers to drive fluid through the fluid end body are installed within removable stuffing box sleeves. These sleeves are maintained within the plunger bores by the bolted retainers. A number of features, including the location of seals within bore walls and carbide inserts within valve structures, aid in reducing or transferring wear.

公开(公告)号：US20190032685A1

公开(公告)日：2019-01-31

申请号：US16043579

申请日：2018-07-24

Applicant: Kerr Machine Co.

Inventor： Kelcy Jake Foster ,  Mark S. Nowell ,  Guy J. Lapointe

IPC: F15B15/10 ,  F16K5/04 ,  F16K5/18 ,  F16J3/06

Abstract: A fluid end with an internal bellows can be used in high pressure environments. The bellows is disposed within a plunger bore, and has an interior isolated from a working chamber of the fluid end. An end of a plunger is received in the interior of the bellows. The bellows contains an incompressible fluid at a constant volume. As the plunger extends into the interior of the bellows, the fluid it contains is displaced. Such fluid displacement causes the bellows to extend. As the plunger is retracted, the fluid replaces the volume formerly displaced by the plunger, and causes the bellows to accordion to a retracted position.