公开(公告)号：US11959578B1

公开(公告)日：2024-04-16

申请号：US17898011

申请日：2022-08-29

Applicant: R.W. Lyall & Company, Inc.

Inventor： William DeKeyser

IPC: F16L55/46 ,  B08B9/055 ,  F16L55/44

CPC classification number: F16L55/46 ,  B08B9/055 ,  F16L55/44

Abstract: A vertical barrel of an internal diameter to receive a pig having a selected uncompressible diameter, a reducer to compress the pig to a compressed diameter and a fluid system to introduce fluid pressure into the upper end of the barrel to drive the pig through the reducer.

公开(公告)号：US11428360B1

公开(公告)日：2022-08-30

申请号：US14511995

申请日：2014-10-10

Applicant: R.W. Lyall & Company, Inc.

Inventor： William DeKeyser

IPC: F16L55/46 ,  B08B9/055 ,  F16L55/44

Abstract: A vertical barrel of an internal diameter to receive a pig having a selected uncompressible diameter, a reducer to compress the pig to a compressed diameter and a fluid system to introduce fluid pressure into the upper end of the barrel to drive the pig through the reducer.

公开(公告)号：US10550972B2

公开(公告)日：2020-02-04

申请号：US14881314

申请日：2015-10-13

Applicant: R.W. LYALL COMPANY, INC.

Inventor： Gregory Harlan Goble ,  Christopher Michael Hoang

IPC: F16L21/08 ,  F16L21/02 ,  F16L21/00 ,  F16L37/092

Abstract: Spigot device including a spigot formed with exterior gripping teeth and sleeve device to telescope over the spigot. The sleeve device is formed with a radially inwardly opening, distally contracting conical bearing surface which mounts a radially inwardly contractible gripper ring device captive therein, and constructed to be driven radially inwardly by the bearing surface as the sleeve is drawn proximally on the spigot to grip a plastic pipe trapped in the annulus between the sleeve and spigot. The method includes selecting a sleeve device to fit over a spigot and an interfitting retainer collar with an interior distally extending and radially and inwardly sloped bearing surface defining a gripper ring cavity. Selecting a gripper ring device which is contractible radially inwardly and inserting it in the cavity and retaining the gripper ring device to cooperate in forming an annulus for receipt of a plastic pipe and causing the gripper ring device to grip the pipe.

公开(公告)号：US20170102102A1

公开(公告)日：2017-04-13

申请号：US14881314

申请日：2015-10-13

Applicant: R.W. LYALL COMPANY, INC.

Inventor： Gregory Harlan Goble ,  Christopher Michael Hoang

IPC: F16L21/08 ,  F16L21/00 ,  F16L21/02

Abstract: Spigot device including a spigot formed with exterior gripping teeth and sleeve device to telescope over the spigot. The sleeve device is formed with a radially inwardly opening, distally contracting conical bearing surface which mounts a radially inwardly contractible gripper ring device captive therein, and constructed to be driven radially inwardly by the bearing surface as the sleeve is drawn proximally on the spigot to grip a plastic pipe trapped in the annulus between the sleeve and spigot.The steps of selecting a spigot device including a distally projecting spigot of a predetermined outside diameter. Selecting a sleeve device formed with a radially inwardly opening interior retainer collar with an interior distally extending and radially and inwardly sloped bearing surface defining a gripper ring cavity. Selecting a gripper ring device which is contractible radially inwardly and inserting in the cavity and retaining the gripper ring device in the cavity to cooperate with the outside diameter to form an annulus for receipt of the plastic pipe and causing the gripper ring device to grip the pipe.