US20130149040A1 - Clamp Systems and Methods for Pile Drivers and Extractors - Google Patents

Clamp Systems and Methods for Pile Drivers and Extractors Download PDF

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Publication number
US20130149040A1
US20130149040A1 US13/762,194 US201313762194A US2013149040A1 US 20130149040 A1 US20130149040 A1 US 20130149040A1 US 201313762194 A US201313762194 A US 201313762194A US 2013149040 A1 US2013149040 A1 US 2013149040A1
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United States
Prior art keywords
surface layer
clamp
recited
clamp assembly
pile
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US13/762,194
Inventor
Kingsley S. Evarts
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American Piledriving Equipment Inc
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American Piledriving Equipment Inc
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Filing date
Publication date
Application filed by American Piledriving Equipment Inc filed Critical American Piledriving Equipment Inc
Priority to US13/762,194 priority Critical patent/US20130149040A1/en
Assigned to HOMAX PRODUCTS, INC. reassignment HOMAX PRODUCTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EVARTS, KINGSLEY S.
Assigned to AMERICAN PILEDRIVING EQUIPMENT, INC. reassignment AMERICAN PILEDRIVING EQUIPMENT, INC. CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 030367 FRAME 0632. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE IS AMERICAN PILEDRIVING EQUIPMENT, INC.. Assignors: EVARTS, KINGSLEY S.
Publication of US20130149040A1 publication Critical patent/US20130149040A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44983—Clasp, clip, support-clamp, or required component thereof formed from single rigid piece of material
    • Y10T24/44991—Clasp, clip, support-clamp, or required component thereof formed from single rigid piece of material having specific surface irregularity on or along engaging face
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer

Definitions

  • the present invention relates to methods and apparatus for inserting rigid members into or extracting rigid members from the earth and, more particularly, to clamp systems and methods that attach a pile driver/extractor to a pile to be driven and/or extracted.
  • rigid members such as piles, anchor members, caissons, sheet pile barriers, and mandrels for inserting wick drain material, must be placed into the earth.
  • piles such as piles, anchor members, caissons, sheet pile barriers, and mandrels for inserting wick drain material
  • rigid members such as piles, anchor members, caissons, sheet pile barriers, and mandrels for inserting wick drain material.
  • piles will be used herein to refer to the rigid members typically driven into the earth during construction projects. It is well-known that such rigid members may often be driven into or extracted from the earth without excavation by applying a driving or extracting force on an upper end of the pile.
  • a clamp system When applying a downward driving force to a pile, it is not necessary, although perhaps desirable, to clamp the pile driver to the pile. However, when a pile is extracted from the earth, a clamp system must be used to transmit an upward extracting force to the pile to pull the pile from the earth. In addition, during both pile driving and pile extracting, a reciprocating vibratory force, typically up and down, may be applied in addition to the driving or pulling force. The use of vibratory forces also requires a clamp system to ensure that the vibratory forces are effectively transmitted to the pile.
  • a clamp system typically comprises first and second clamp members that engage the pile.
  • a clamping force may be applied to one or both of the clamp members such that the pile or a portion of the pile is securely gripped between the clamp members.
  • the clamp members may be contoured to accommodate the shape of the pile or portion of the pile to be gripped.
  • the clamp members may be otherwise textured in some form to increase friction between the clamp members and the pile.
  • a primary point of failure of a pile driving or extracting system is when the driving, pulling, and/or driving forces are not adequately transmitted to the pile.
  • the need thus exists for improved clamp systems for pile extractors and for pile drivers and extractors that employ vibratory forces.
  • the structural portion defines peaks and valleys.
  • the surface layer is formed on the structural portion and defines an engaging surface.
  • the surface layer defining a thickness dimension of at least approximately 0.0025 inches and a grit of at least approximately 180 Emery.
  • the present invention may also be embodied as a method of forming a clamp member for clamping a vibratory device to a pile comprising the following steps.
  • a clamp member comprising peaks and valleys is provided.
  • a surface layer is formed on the peaks and valleys of the clamp member such that the surface layer defines an engaging surface.
  • the surface layer defines a thickness dimension of at least approximately 0 . 0025 inches and a grit of at least approximately 180 Emery.
  • FIG. 1 is a side elevation view of one example embodiment of a clamp system of the present invention
  • FIG. 2 is a bottom plan view of the clamp system of FIG. 1 ;
  • FIGS. 3 and 4 are side, elevation sectional views of a clamp member of the present invention before and after, respectively, application of a surface layer.
  • FIG. 1 of the drawing depicted at 20 therein is a clamp assembly constructed in accordance with, and embodying, the principles of the present invention.
  • the clamp assembly 20 is adapted to be connected to a vibratory device (not shown) and engages a pile 22 such that vibratory forces generated by the vibratory device are transmitted to the pile 22 .
  • the present invention is of particular significance in the context of a clamp assembly for sheet piles such as the clamp assembly 20 depicted and described herein, but a clamp assembly constructed in accordance with the present invention can be adapted to engage piles of different shapes and materials as will generally be described below.
  • the clamp assembly 20 comprises first and second clamp members 30 and 32 .
  • the first clamp member 30 is fixed relative to a clamp frame 34 .
  • the second clamp member 32 is mounted on an actuator 36 supported by the clamp frame 34 .
  • the actuator 36 which is operated by a hydraulic system (not shown), displaces the second clamp member 32 relative to the clamp frame 34 and thus relative to the first clamp member 30 .
  • the first clamp member 30 and the actuator 36 are supported by the clamp frame 34 such that the actuator 36 moves the second clamp member 32 towards and away from the first clamp member 30 .
  • operation of the actuator 36 causes the pile 22 to be clamped between the clamp members 30 and 32 as shown in FIG. 1 .
  • the first and second clamp members 30 and 32 define first and second engaging surfaces 50 and 52 , respectively.
  • the example second clamp member 32 is depicted in further detail in FIG. 4 of the drawing.
  • FIG. 4 illustrates that the second engaging surface 52 defines peaks 54 and valleys 56 and is defined by a surface layer 60 .
  • the first engaging surface 50 may optionally be defined by a similar surface layer formed on the first clamp member 30 .
  • FIG. 3 illustrates that the second clamp member 32 is originally constructed in a generally conventional manner in a pre-coated form 32 a.
  • the second clamp member 32 defines an uncoated surface 52 a.
  • the surface layer 60 is deposited or otherwise formed on the uncoated surface 52 a to create the second engaging surface 52 of the second clamp member 32 .
  • the surface layer 60 is formed using a carbide alloy coating that is sprayed or otherwise deposited on the uncoated surface 52 a.
  • One example process for forming the surface layer 60 is marketed under the brand name CARBINITE Metal Coatings. Other processes for applying metal coatings similar to the CARBINITE process may be used instead or in addition.
  • the surface layer 60 defines a “build-up” dimension generally corresponding to the thickness “t” of the layer 60 and also a texture or “grit” that generally defines the friction of the second engaging surface 52 .
  • the thickness “t” of the surface layer 60 is typically within a first preferred range of 0.006′′ and 0.017′′, may be within a second preferred range of 0.0025′′ and 0.017′′, and in any event is within a third preferred range of at least 0.0025′′.
  • the grit of the surface layer is typically within a first range of substantially between 100 Emery and 36 Emery, may be within a second preferred range of substantially between 180 Emery and 36 Emery, and in any event should be within a third preferred range of at least 180 Emery.
  • the exact thickness “t” and grit of the surface layer 60 should be determined based on the character of the pile being driven.
  • the grit is preferably within approximately 180 Emery and 100 Emery.
  • the grit is preferably greater than 60 Emery to enhance friction.
  • the grit is preferably in the range of approximately smooth to 180 Emery to reduce damage to the plastic material from which the pile is made.
  • the thickness “t” can also be increased to increase the wear resistance of the second engaging surface 52 .
  • the pre-coated form 32 a of the second clamp member 32 may be made of relatively soft material that is inexpensive and easy to machine.
  • the surface layer 60 may be applied by building up the thickness “t” thereof using several applications of the coating material to increase the thickness of the surface layer 60 on the pre-coated second clamp member 32 a and thus protect the engaging surface 52 .

Abstract

A clamp member for use in securing a vibratory device to a pile comprises a structural portion and a surface layer. The structural portion defines peaks and valleys. The surface layer is formed on the structural portion and defines an engaging surface. The surface layer defining a thickness dimension of at least approximately 0.0025 inches and a grit of at least approximately 180 Emery.

Description

    RELATED APPLICATIONS
  • This application (Attorney's Ref. No. P217360) is a continuation of U.S. patent application Ser. No. 13/116,919 filed May 26, 2011.
  • U.S. patent application Ser. No. 13/116,929 is a continuation of U.S. patent application Ser. No. 12/772,335 filed May 3, 2010, now U.S. Pat. No. 7,950,877, which issued May 31, 2011.
  • U.S. patent application Ser. No. 12/772,335 is a continuation of U.S. patent application Ser. No. 11/294,141, filed Dec. 5, 2005, now U.S. Pat. No. 7,708,499, which issued May 4, 2010.
  • U.S. patent application Ser. No. 11/294,141 claims benefit of U.S. Provisional Application Ser. No. 60/641,289 filed Jan. 3, 2005.
  • The contents of all related applications listed above are incorporated herein by reference.
    • TECHNICAL FIELD
  • The present invention relates to methods and apparatus for inserting rigid members into or extracting rigid members from the earth and, more particularly, to clamp systems and methods that attach a pile driver/extractor to a pile to be driven and/or extracted.
    • BACKGROUND
  • For certain construction projects, rigid members, such as piles, anchor members, caissons, sheet pile barriers, and mandrels for inserting wick drain material, must be placed into the earth. The term “piles” will be used herein to refer to the rigid members typically driven into the earth during construction projects. It is well-known that such rigid members may often be driven into or extracted from the earth without excavation by applying a driving or extracting force on an upper end of the pile.
  • When applying a downward driving force to a pile, it is not necessary, although perhaps desirable, to clamp the pile driver to the pile. However, when a pile is extracted from the earth, a clamp system must be used to transmit an upward extracting force to the pile to pull the pile from the earth. In addition, during both pile driving and pile extracting, a reciprocating vibratory force, typically up and down, may be applied in addition to the driving or pulling force. The use of vibratory forces also requires a clamp system to ensure that the vibratory forces are effectively transmitted to the pile.
  • A clamp system typically comprises first and second clamp members that engage the pile. A clamping force may be applied to one or both of the clamp members such that the pile or a portion of the pile is securely gripped between the clamp members. The clamp members may be contoured to accommodate the shape of the pile or portion of the pile to be gripped. The clamp members may be otherwise textured in some form to increase friction between the clamp members and the pile.
  • A primary point of failure of a pile driving or extracting system is when the driving, pulling, and/or driving forces are not adequately transmitted to the pile. The need thus exists for improved clamp systems for pile extractors and for pile drivers and extractors that employ vibratory forces.
    • SUMMARY
  • The present invention may be embodied as a clamp member for use in securing a vibratory device to a pile comprises a structural portion and a surface layer. The structural portion defines peaks and valleys. The surface layer is formed on the structural portion and defines an engaging surface. The surface layer defining a thickness dimension of at least approximately 0.0025 inches and a grit of at least approximately 180 Emery.
  • The present invention may also be embodied as a method of forming a clamp member for clamping a vibratory device to a pile comprising the following steps. A clamp member comprising peaks and valleys is provided. A surface layer is formed on the peaks and valleys of the clamp member such that the surface layer defines an engaging surface. The surface layer defines a thickness dimension of at least approximately 0.0025 inches and a grit of at least approximately 180 Emery.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a side elevation view of one example embodiment of a clamp system of the present invention;
  • FIG. 2 is a bottom plan view of the clamp system of FIG. 1; and
  • FIGS. 3 and 4 are side, elevation sectional views of a clamp member of the present invention before and after, respectively, application of a surface layer.
    •  DETAILED DESCRIPTION
  • Referring to FIG. 1 of the drawing, depicted at 20 therein is a clamp assembly constructed in accordance with, and embodying, the principles of the present invention. The clamp assembly 20 is adapted to be connected to a vibratory device (not shown) and engages a pile 22 such that vibratory forces generated by the vibratory device are transmitted to the pile 22. The present invention is of particular significance in the context of a clamp assembly for sheet piles such as the clamp assembly 20 depicted and described herein, but a clamp assembly constructed in accordance with the present invention can be adapted to engage piles of different shapes and materials as will generally be described below.
  • The clamp assembly 20 comprises first and second clamp members 30 and 32. The first clamp member 30 is fixed relative to a clamp frame 34. The second clamp member 32 is mounted on an actuator 36 supported by the clamp frame 34. The actuator 36, which is operated by a hydraulic system (not shown), displaces the second clamp member 32 relative to the clamp frame 34 and thus relative to the first clamp member 30. The first clamp member 30 and the actuator 36 are supported by the clamp frame 34 such that the actuator 36 moves the second clamp member 32 towards and away from the first clamp member 30. When the clamp assembly 20 is arranged such that the pile 22 is in a clamp space 40 (FIG. 2) between the first and second clamp members 30 and 32, operation of the actuator 36 causes the pile 22 to be clamped between the clamp members 30 and 32 as shown in FIG. 1.
  • The first and second clamp members 30 and 32 define first and second engaging surfaces 50 and 52, respectively. The example second clamp member 32 is depicted in further detail in FIG. 4 of the drawing. FIG. 4 illustrates that the second engaging surface 52 defines peaks 54 and valleys 56 and is defined by a surface layer 60. The first engaging surface 50 may optionally be defined by a similar surface layer formed on the first clamp member 30.
  • To fabricate the example second clamp member 32, FIG. 3 illustrates that the second clamp member 32 is originally constructed in a generally conventional manner in a pre-coated form 32 a. In the pre-coated form 32 a, the second clamp member 32 defines an uncoated surface 52 a. The surface layer 60 is deposited or otherwise formed on the uncoated surface 52 a to create the second engaging surface 52 of the second clamp member 32. The surface layer 60 is formed using a carbide alloy coating that is sprayed or otherwise deposited on the uncoated surface 52 a. One example process for forming the surface layer 60 is marketed under the brand name CARBINITE Metal Coatings. Other processes for applying metal coatings similar to the CARBINITE process may be used instead or in addition. The surface layer 60 defines a “build-up” dimension generally corresponding to the thickness “t” of the layer 60 and also a texture or “grit” that generally defines the friction of the second engaging surface 52. The thickness “t” of the surface layer 60 is typically within a first preferred range of 0.006″ and 0.017″, may be within a second preferred range of 0.0025″ and 0.017″, and in any event is within a third preferred range of at least 0.0025″. The grit of the surface layer is typically within a first range of substantially between 100 Emery and 36 Emery, may be within a second preferred range of substantially between 180 Emery and 36 Emery, and in any event should be within a third preferred range of at least 180 Emery.
  • The exact thickness “t” and grit of the surface layer 60 should be determined based on the character of the pile being driven. With the example metal sheet pile 22, the grit is preferably within approximately 180 Emery and 100 Emery. For a clamp assembly that will be used to extract a wooden pile that is coated with slime, barnacles, and/or the like, the grit is preferably greater than 60 Emery to enhance friction. For a plastic sheet pile, the grit is preferably in the range of approximately smooth to 180 Emery to reduce damage to the plastic material from which the pile is made.
  • The thickness “t” can also be increased to increase the wear resistance of the second engaging surface 52. For example, the pre-coated form 32 a of the second clamp member 32 may be made of relatively soft material that is inexpensive and easy to machine. The surface layer 60 may be applied by building up the thickness “t” thereof using several applications of the coating material to increase the thickness of the surface layer 60 on the pre-coated second clamp member 32 a and thus protect the engaging surface 52.
  • From the foregoing, it should be clear that the present invention may be embodied in forms other than the form described above. The above- described embodiment is therefore to be considered in all respects illustrative and not restrictive.

Claims (14)

What is claimed is:
1. A clamp assembly for use in securing a vibratory device that generates vibratory forces to a pile comprising:
first and second clamp members, where each of the clamp members comprises a structural portion defining peaks and valleys;
a surface layer is formed on each of the structural portions, where the surface layer defines an engaging surface, the surface layer defining
a thickness dimension of at least 0.0025 inches; and
a grit of at least 180; and
a hydraulic actuator for displacing the second clamp member relative to the first clamp member such that the engaging surfaces of the first and clamp members engage the pile to transmit at least the vibratory forces generated by the vibratory device to the pile.
2. A clamp assembly as recited in claim 1, in which the surface layer is formed of carbide alloy material.
3. A clamp assembly as recited in claim 1, in which the surface layer defines a thickness dimension of substantially between 0.0025 inches and 0.017 inches.
4. A clamp assembly as recited in claim 1, in which the surface layer defines a thickness dimension of substantially between 0.006 inches and 0.017 inches.
5. A clamp assembly as recited in claim 2, in which the surface layer defines a thickness dimension of substantially between 0.0025 inches and 0.017 inches.
6. A clamp assembly as recited in claim 2, in which the surface layer defines a thickness dimension of substantially between 0.006 inches and 0.017 inches.
7. A clamp assembly as recited in claim 1, in which the surface layer defines a grit of substantially between 180 and 36.
8. A clamp assembly as recited in claim 1, in which the surface layer defines a grit of substantially between 100 and 36.
9. A clamp assembly as recited in claim 2, in which the surface layer defines a grit of substantially between 180 and 36.
10. A clamp assembly as recited in claim 2, in which the surface layer defines a grit of substantially between 100 and 36.
11. A clamp assembly as recited in claim 1, in which the surface layer comprises at least one coating layer of coating material.
12. A clamp assembly as recited in claim 11, in which the surface layer comprises a plurality of coating layers of coating material.
13. A clamp assembly as recited in claim 2, in which the surface layer is formed by at least one coating layer of coating material.
14. A clamp assembly as recited in claim 13, in which the surface layer is formed by a plurality of coating layers of coating material.
US13/762,194 2005-01-03 2013-02-07 Clamp Systems and Methods for Pile Drivers and Extractors Abandoned US20130149040A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/762,194 US20130149040A1 (en) 2005-01-03 2013-02-07 Clamp Systems and Methods for Pile Drivers and Extractors

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US64128905P 2005-01-03 2005-01-03
US11/294,141 US7708499B1 (en) 2005-01-03 2005-12-05 Clamp systems and methods for pile drivers and extractors
US12/772,335 US7950877B2 (en) 2005-01-03 2010-05-03 Clamp systems and methods for pile drivers and extractors
US13/116,919 US20110252610A1 (en) 2005-01-03 2011-05-26 Clamp systems and methods for pile drivers and extractors
US13/762,194 US20130149040A1 (en) 2005-01-03 2013-02-07 Clamp Systems and Methods for Pile Drivers and Extractors

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US13/116,919 Continuation US20110252610A1 (en) 2005-01-03 2011-05-26 Clamp systems and methods for pile drivers and extractors

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US20130149040A1 true US20130149040A1 (en) 2013-06-13

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US11/294,141 Active 2028-03-16 US7708499B1 (en) 2005-01-03 2005-12-05 Clamp systems and methods for pile drivers and extractors
US12/772,335 Active US7950877B2 (en) 2005-01-03 2010-05-03 Clamp systems and methods for pile drivers and extractors
US13/116,919 Abandoned US20110252610A1 (en) 2005-01-03 2011-05-26 Clamp systems and methods for pile drivers and extractors
US13/762,194 Abandoned US20130149040A1 (en) 2005-01-03 2013-02-07 Clamp Systems and Methods for Pile Drivers and Extractors

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US12/772,335 Active US7950877B2 (en) 2005-01-03 2010-05-03 Clamp systems and methods for pile drivers and extractors
US13/116,919 Abandoned US20110252610A1 (en) 2005-01-03 2011-05-26 Clamp systems and methods for pile drivers and extractors

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US9371624B2 (en) 2013-07-05 2016-06-21 American Piledriving Equipment, Inc. Accessory connection systems and methods for use with helical piledriving systems
US9957684B2 (en) 2015-12-11 2018-05-01 American Piledriving Equipment, Inc. Systems and methods for installing pile structures in permafrost
US10385531B2 (en) 2015-10-09 2019-08-20 American Piledriving Equipment, Inc. Split flight pile systems and methods
US10392871B2 (en) 2015-11-18 2019-08-27 American Piledriving Equipment, Inc. Earth boring systems and methods with integral debris removal
CN110904964A (en) * 2019-11-22 2020-03-24 上海振中建机科技有限公司 Double-oil-cylinder clamping structure and vibrating pile hammer
US10760602B2 (en) 2015-06-08 2020-09-01 American Piledriving Equipment, Inc. Systems and methods for connecting a structural member to a pile

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US8434969B2 (en) 2010-04-02 2013-05-07 American Piledriving Equipment, Inc. Internal pipe clamp
US8425157B1 (en) * 2012-02-28 2013-04-23 American Piledriving Equipment, Inc. Clamp for pile driving
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DE102015201557A1 (en) * 2015-01-29 2016-08-04 Rwe Innogy Gmbh Foundation pile for vibrating into a subsoil
US10273646B2 (en) 2015-12-14 2019-04-30 American Piledriving Equipment, Inc. Guide systems and methods for diesel hammers
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US20110252610A1 (en) 2011-10-20
US20100209186A1 (en) 2010-08-19
US7708499B1 (en) 2010-05-04

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