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公开(公告)号：US20220341508A1
公开(公告)日：2022-10-27
申请号：US17862939
申请日：2022-07-12
Applicant: The Charles Machine Works, Inc.
Inventor： Robert F. Crane , Mark D. Randa , Steven W. Wentworth
Abstract: A machine for extracting a ductile pipe. The machine has a vise which can grip the pipe, and a wire clamp. Each of the wire clamp and vise are supported on a carriage which is movable relative to a frame. This enables the vise to grip and pull the ductile pipe. Additionally, a wire strand may be disposed through the pipe from a far end to the end at which the machine is placed. The wire clamp allows the machine to pre-stress the strand to improve the extraction of the ductile pipe.
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公开(公告)号：US20200158261A1
公开(公告)日：2020-05-21
申请号：US16774255
申请日：2020-01-28
Applicant: The Charles Machine Works, Inc.
Inventor： Steven W. Wentworth , Robert F. Crane , Mark D. Randa
Abstract: A pipe extraction machine can be used to remove a buried pipe from the ground. The machine has a carriage with jaws that grip the buried pipe. While gripped, the carriage moves relative to a support structure to pull the pipe out of the ground. Jaws are actuated by rotating clamp plates and maintained in opposition by static horizontal grooves. The jaws remain opposed and aligned during rotation of the clamp plates. A pipe shear may remove the pipe one piece at a time. A pipe puller can be used at the back end of the pipe being removed to simultaneously install a new pipe along the same path.
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公开(公告)号：US20210190251A1
公开(公告)日：2021-06-24
申请号：US17193977
申请日：2021-03-05
Applicant: The Charles Machine Works, Inc.
Inventor： Robert F. Crane , Steven W. Wentworth , Mark D. Randa
IPC: F16L55/165 , F16L55/18 , F16L1/028 , E21B29/10 , F16L1/06
Abstract: A method for enlarging a crushed section of a ductile pipe. A wire rope having a bead or plurality of beads attached to the rope is placed in a ductile pipe. When a series of beads is used, each of the beads is sequentially larger. The wire rope is pulled through the crushed section, and the ductile pipe conforms to the larger diameter of the beads. The crushed section of pipe may be expanded so that a larger wire rope suitable for pipe extraction may be passed through. Alternatively, the pipe may be reformed and expanded to near or greater than its original size. The pipe may then be coated or a smaller slip-lined pipe may be placed within the original pipe.
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公开(公告)号：US10883628B2
公开(公告)日：2021-01-05
申请号：US16774255
申请日：2020-01-28
Applicant: The Charles Machine Works, Inc.
Inventor： Steven W. Wentworth , Robert F. Crane , Mark D. Randa
Abstract: A pipe extraction machine can be used to remove a buried pipe from the ground. The machine has a carriage with jaws that grip the buried pipe. While gripped, the carriage moves relative to a support structure to pull the pipe out of the ground. Jaws are actuated by rotating clamp plates and maintained in opposition by static horizontal grooves. The jaws remain opposed and aligned during rotation of the clamp plates. A pipe shear may remove the pipe one piece at a time. A pipe puller can be used at the back end of the pipe being removed to simultaneously install a new pipe along the same path.
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公开(公告)号：US20200378529A1
公开(公告)日：2020-12-03
申请号：US16866720
申请日：2020-05-05
Applicant: The Charles Machine Works, Inc.
Inventor： Robert F. Crane , Mark D. Randa , Steven W. Wentworth
Abstract: A machine for extracting a ductile pipe. The machine has a vise which can grip the pipe, and a wire clamp. Each of the wire clamp and vise are supported on a carriage which is movable relative to a frame. This enables the vise to grip and pull the ductile pipe. Additionally, a wire strand may be disposed through the pipe from a far end to the end at which the machine is placed. The wire clamp allows the machine to pre-stress the strand to improve the extraction of the ductile pipe.
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Patent Agency Ranking
公开(公告)号：US12281726B2
公开(公告)日：2025-04-22
申请号：US17862939
申请日：2022-07-12
Applicant: The Charles Machine Works, Inc.
Inventor： Robert F. Crane , Mark D. Randa , Steven W. Wentworth
Abstract: A machine for extracting a ductile pipe. The machine has a vise which can grip the pipe, and a wire clamp. Each of the wire clamp and vise are supported on a carriage which is movable relative to a frame. This enables the vise to grip and pull the ductile pipe. Additionally, a wire strand may be disposed through the pipe from a far end to the end at which the machine is placed. The wire clamp allows the machine to pre-stress the strand to improve the extraction of the ductile pipe.
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公开(公告)号：US20210364102A1
公开(公告)日：2021-11-25
申请号：US17397412
申请日：2021-08-09
Applicant: The Charles Machine Works, Inc.
Inventor： Robert F. Crane , Mark D. Randa , Steven W. Wentworth
Abstract: A machine for extracting a ductile pipe. The machine has a vise which can grip the pipe, and a wire clamp. Each of the wire clamp and vise are supported on a carriage which is movable relative to a frame. This enables the vise to grip and pull the ductile pipe. Additionally, a wire strand may be disposed through the pipe from a far end to the end at which the machine is placed. The wire clamp allows the machine to pre-stress the strand to improve the extraction of the ductile pipe.
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公开(公告)号：US20250141196A1
公开(公告)日：2025-05-01
申请号：US18924316
申请日：2024-10-23
Applicant: The Charles Machine Works, Inc.
Inventor： Walter George Thompson , Mark D. Randa , James B. Doyle, JR. , Robert F. Crane , Steven W. Wentworth
IPC: H02G1/08
Abstract: A cable gripping assembly. The gripping assembly has two jaw assemblies for gripping and pulling a cable. Each jaw assembly has a jaw block with a tapered cavity, and a jaw subassembly which fits within the tapered cavity to grip a cable when frictional forces, caused by a hydraulic cylinder or other actuator, force the jaws into the tapered cavity. The jaw subassembly has a guide plate, which carries pins affixed to the jaws. The guide plate is ordinarily allowed to move the pins along angled slots in a jaw plate. However, when actuated by a plunger, the guide plate and pins are forced to a widest point of the angled slots, maintaining the jaws in an open position, allowing for easy removal of the strand from the gripping assembly.
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公开(公告)号：US12092257B2
公开(公告)日：2024-09-17
申请号：US17193977
申请日：2021-03-05
Applicant: The Charles Machine Works, Inc.
Inventor： Robert F. Crane , Steven W. Wentworth , Mark D. Randa
IPC: F16L55/18 , E21B29/10 , F16L1/028 , F16L1/06 , F16L55/165
CPC classification number: F16L55/1657 , E21B29/10 , F16L1/028 , F16L1/06 , F16L55/165 , F16L55/18
Abstract: A method for enlarging a crushed section of a ductile pipe. A wire rope having a bead or plurality of beads attached to the rope is placed in a ductile pipe. When a series of beads is used, each of the beads is sequentially larger. The wire rope is pulled through the crushed section, and the ductile pipe conforms to the larger diameter of the beads. The crushed section of pipe may be expanded so that a larger wire rope suitable for pipe extraction may be passed through. Alternatively, the pipe may be reformed and expanded to near or greater than its original size. The pipe may then be coated or a smaller slip-lined pipe may be placed within the original pipe.
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公开(公告)号：US20230339077A1
公开(公告)日：2023-10-26
申请号：US18303850
申请日：2023-04-20
Applicant: The Charles Machine Works, Inc.
Inventor： Steven W. Wentworth , Mark D. Randa , Robert F. Crane , James B. Doyle, JR.
Abstract: An apparatus for gripping and pulling a wire strand. The apparatus is carried by a cylinder assembly attached to a frame. The cylinders provide force to pull the strand. Jaws are situated in a jaw block, and are tapered such that movement of the jaw block by the cylinders will tend to force the jaws closer to one another within a tapered cavity. Movable, spring-loaded J-rods are provided to retain the jaws within the jaw block when desired. The J-rods can be rotated to a position which does not retain the jaws when the wire strand is being added to, or removed from, the apparatus.
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