WO2001068992A1 - Shear with replaceable tip and rotatable cross blade - Google Patents

Shear with replaceable tip and rotatable cross blade Download PDF

Info

Publication number
WO2001068992A1
WO2001068992A1 PCT/US2001/007844 US0107844W WO0168992A1 WO 2001068992 A1 WO2001068992 A1 WO 2001068992A1 US 0107844 W US0107844 W US 0107844W WO 0168992 A1 WO0168992 A1 WO 0168992A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
lower
jaw
upper
shear
Prior art date
Application number
PCT/US2001/007844
Other languages
French (fr)
Inventor
Kenneth R. Labounty
Ross D. Christenson
Daniel P. Jacobson
Original Assignee
Genesis Equipment & Manufacturing, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US09/524,904 priority Critical patent/US6926217B1/en
Priority to US09/524,904 priority
Application filed by Genesis Equipment & Manufacturing, Inc. filed Critical Genesis Equipment & Manufacturing, Inc.
Publication of WO2001068992A1 publication Critical patent/WO2001068992A1/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/965Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of metal-cutting or concrete-crushing implements

Abstract

A heavy-duty demolition shear (10) for attachment to the boom structure and hydraulic system of an excavator, has a rigid lower jaw (12) and an upper jaw (14) and pivot (16) interconnecting the jaws together. The shear is attachable to the boom structure of the excavator. The upper jaw (14) has upper shear blades (34, 35), while the lower jaw has at least one lower shear blade (36, 37). The lower jaw also has a rigid guide blade (48) lying along the lower shear blade and in spaced relation therewith. The outer ends of the shear blade and guide blade are co-extensively opposed to each other so that a tie (56) plate secures the outer ends of the lower shear blade (36) and the guide blade (48) together. There is an open slot (58) between the lower shear blade (36) and the adjacent guide blade (48) to receive the upper shear blade (34, 35) and upper jaw (14) therein. The upper jaw has a cylinder (30) attached to the hydraulic system of the excavator for closing and opening the upper jaw relative to the lower jaw. A rotatable, indexable cross blade (60) is mounted to the tie plate (56) substantially transverse to the lower shear blade (36) and to the guide blade (48). The cross blade (60) is seated and mounted inside the tie plate (56) at an angle (alpha) between one degree and thirty degrees.

Description

SHEAR WITH REPLACEABLE TIP AND ROTATABLE CROSS BLADE

BACKGROUND OF THE INVENTION

This is a continuation-in-part of U.S. Patent Application Serial Number 09/267,569, filed March 12, 1999.

An understanding of the operation of the demolition shears or apparati like the present invention may be learned by studying U.S. Patent No. 4,519,135, hereby incorporated by reference. This invention relates to a heavy duty demolition apparatus, especially adapted to be mounted on a rigid boom of a mobile vehicle and particularly adapted to be mounted on the dipper stick of an excavator, with a blade stabilizing device to keep the upper jaw of the apparatus from moving laterally relative to the lower jaw and breaking during the shearing operation on a workpiece.

Heavy duty shears of the type that are powered by hydraulic cylinders are proving more and more useful in handling scrap and especially metal scrap of all sorts. Such scrap comes in many different forms, and may be in the form of pipes made of steel or soft iron or cast iron, ranging in seizes from 2 inches or smaller, and up to 8 or 10 inches in diameter or larger; structural beams such as I-beams, channels, angle beams in a large range of sizes, up to 8, 10 or 16 inches across and larger; rods and heavy cables having diameters of 2 to 3 inches and larger, metal sheets and plates and formed metal of all sorts including wheels and automobile and track frames, and a myriad of long and short pieces of stock and metal pieces that are cast, rolled, stamped or otherwise formed, both singly and in various types of assembly.

The prior art has included numerous shears such as that illustrated in U.S. Pat. No. 4,198,747; U.S. Pat. No. 4,188,721; U.S. Pat. No. 4,897,921; U.S. Pat. No. 4,543,719; U.S. Pat. No. 4,558,515 and U.S. Pat. No. 4,104,792. Typically, these heavy duty shears mount on the dipper stick, of an excavator so that the shears may be controlled fairly well in handling various types of scrap and cutting the scrap into smaller pieces and lengths.

Typically, these shears have a fixed lower jaw and a movable upper jaw that pivots on the lower jaw, with shear blades of hardened steel on both the upper jaw and the lower jaw. The workpieces is sheared by closing the upper jaw against the lower jaw under hydraulic pressure, with the shear blades cutting the workpiece.

Prior art shears have several problems. During the shearing process, metal scrap may become twisted and/or bent. Thus, sometimes the scrap or work piece gets jammed or wedged in the shear, requiring down time to cut the scrap out of the shear. Also, bending and/or twisting of metal scrap makes the scrap irregular and voluminous, thereby difficult to store and transport. Demolition shears are subject to substantial wear, again requiring down time to cut off worn parts.

There is a need for a heavy-duty demolition apparatus that minimizes the twisting and or bending of metal scrap during the shearing process and has replaceable wear parts and blades.

SUMMARY OF THE INVENTION

A heavy-duty demolition shear for attachment to the boom structure and hydraulic system of an excavator, has a rigid lower jaw and an upper jaw and pivot interconnecting the jaws together. The shear is attachable to the boom structure of the excavator. The upper jaw has upper shear blades, while the lower jaw has at least one lower shear blade. The lower jaw also has a rigid guide blade lying along the lower shear blade and in spaced relation therewith. The outer ends of the shear blade and guide blade are co-extensively opposed to each other so that a tie plate secures the outer ends of the lower shear blade and the guide blade together. There is an open slot between the lower shear blade and the adjacent guide blade to receive the upper shear blade and upper jaw therein. The upper jaw has a cylinder attached to the hydraulic system of the excavator for closing and opening the upper jaw relative to the lower jaw. The lower jaw and the upper jaw shear a workpiece when the upper jaw is closed upon the lower jaw. A rotatable, indexable cross blade is mounted to the tie plate substantially transverse to the lower shear blade and to the guide blade. The cross blade is seated and mounted inside the tie plate at an angle between one degree and thirty degrees, preferably about ten degrees. Thus, the cutting edge leans inwardly toward the throat of the shear, while the lower portion extends outwardly to provide upper jaw clearance within the open slot. The upper jaw includes a replaceable tip. A principal object and advantage of the present invention is that the cross blade, mounted at an angle to the tie plate, assists in producing flat scrap producing maximum storage and transport by allowing the upper shear blade to clear the cross blade more easily after initial scrap piercing and shearing.

Another principal object and advantage of the present invention is that the cross blade is rotatably mounted with four cutting surfaces that may be brought into position for shearing.

Another principal object and advantage of the present invention is that a replaceable tip is mounted to the front end of the upper jaw in such a way that it will not be sheared off by lateral forces developed during the shearing process and ma be easily replaced with little down time.

Another object and advantage of the present invention is that all blades are rotatable and indexable, each presenting four blade edges for maximum usage and shearing.

Another object and advantage of the present invention is that the lower jaw primary shearing blade is approximately twice the length of the secondary blade, again assisting in producing flat scrape.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a right-side perspective view of the heavy-duty demolition apparatus or shear of the present invention;

FIG. 2 is an exploded perspective view of the heavy-duty demolition apparatus of the present invention;

FIG. 3 is a left-side elevational view of the lower shearing jaw of the heavy-duty demolition apparatus with the guide blade removed for easy viewing;

FIG. 4 is a detailed front perspective view of the broken away front end of the lower jaw of the heavy-duty demolition apparatus;

FIG. 5 is a cross-section approximately at the lines 5 of Fig. 4; FIG. 6 is a front elevational view of the rotatable, indexable lower cross blade of the heavy-duty demolition apparatus of the present invention;

FIG. 7 is a side elevational view of the lower cross blade of the heavy-duty demolition apparatus of the present invention, taken approximately at the lines 7 of Fig. 6;

FIG. 8 is a detailed perspective broken away view of the front end of the upper jaw of the heavy-duty demolition apparatus of the present invention, with the replaceable tip exploded out;

FIG. 9 is similar to Fig. 8, taken from below the upper jaw; and

FIG. 10 is the same as Fig. 9, with the replaceable tip inserted on the upper jaw.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The heavy-duty demolition apparatus of the present invention is generally referred to in the Figures as reference numeral 10.

Referring to Figs. 1 through 6, the heavy-duty demolition apparatus or shear 10 comprises a lower jaw 12, an upper jaw 14, pivot means 16 interconnecting the lower jaw 12 and upper jaw 14, and means 18 for attachment to the excavator. The means 18 may further include a rotator unit 20 allowing rotation of the demolition unit 10 about a longitudinal axis. The apparatus 10 also includes means 30 for attachment to the hydraulic system of an excavator (not shown) for closing and opening the upper jaw relative to the lower jaw.

The upper jaw 14 has an upper shear secondary blade 34 and primary blade 35. The lower jaw 12 has a lower secondary shear blade 36 and primary blade 37 extending along each other for shearing a workpiece when the upper shear blades 34 and 35 are closed upon the lower shear blades 36 and 37. Preferably, the shear blades 34, 35, 36 and 37 are replaceable. Lower primary blade 37 is approximately twice as long as secondary blade 36.

Preferably, the apparatus 20 further comprises a guide blade 48 on the lower jaw 12 lying along the lower shear blade 36, 37 and in spaced relation therewith. The outer end 50 of the guide blade and outer end 52 of the shear blade are adjacent each other. Rigid means 54 securing the outer ends 50, 52 together. The rigid means 54 is preferably a nose or tie plate 56.

An open slot 58 preferably exists between the lower shear blade 36 and the adjacent guide blade 48 to receive the upper jaw 14 and shear blade 34, 35 therein. The open slot 58 has a width wider than the thickness of the upper jaw 14 to maintain open space between the upper jaw 14 and the guide blade 48 when the upper shear blade 34 is in the open slot 58.

A cross blade 60 is mounted to the tie plate 56 substantially transverse to the lower shear blade 36 and to the guide blade 48. The cross blade 60 cooperates with the upper shear blade 36 in piercing and shearing the workpiece.

As best seen in Figs. 4 and 5, the tie plate 56 has an outer surface 56a, and an inner surface 56b adjacent the open slot 58. Preferably, the inner surface 56b has a recess 59, and the cross blade 60 is mounted in the recess 59. Suitably, the cross blade 60 may be mounted to the tie plate 56 by bolts 61. The cross blade may be removably mounted to the tie plate 56, as for example by removing the bolts 61.

The cross blade 60 preferably has a plurality of cutting surfaces 62a, 62b (Fig. 4) and the cross blade is rotatably mounted to the tie plate 56 whereby each of the plurality of cutting surfaces 62 which may be successively exposed for shearing the workpiece, as shown by the arrows in Fig. 4. Most preferably, the cross blade 60 has four cutting surfaces 62a, 62b, 62c, 62d (Fig. 6).

To aid in mounting the cross blade 60 to the tie plate 56, the cross blade 60 may have a shoulder or flange 63 which abuts against an indexing step or recess 64 in the tie plate 56 (Fig. 3).

As best seen in Fig. 3, the cross blade 60 preferably forms a first angle ά therebetween. It has been found advantageous, that setting the cross blade 60 into the tie plate 56 at an angle with top cutting edge 62a leaning inwardly towards the shear 10 throat or pivot 16, and lower edge 62c extending outwardly, assists in producing sheared scrap that is flat, rather than bent or twisted. Also, shear 10 is less likely to become jammed. This is because the angle ά the upper shear blade 34 to clear the cross blade 60 more easily as the upper shear blade 34 pierces and shears at edge 62a and enters the space 58. The angle ά is acute, preferably between one degree and thirty degrees, more preferably between one degree and twenty degrees, and most preferably about ten degrees.

The lower shear blade 36, 37 preferably comprises a primary blade 36 and a secondary blade 37. The primary lower shear blade 36 is distal from the tie plate 56, while the secondary lower shear blade 37 lies adjacent to the tie plate 56 and cross blade 60. The primary lower shear blade 36 is longer than the secondary lower shear blade 37, and most preferably is twice as long as the secondary lower shear blade 36. It has been found that the above structure assists in producing flat cut scrap.

Each of the primary lower shear blade 36 and secondary lower shear blade 37 may have four cutting surfaces. As shown in Fig. 3, the blades 36, 37 may be rotatably mounted and flipped around in the lower jaw 12 to successively bring each of the four cutting surfaces into position for shearing the workpiece (as shown by the arrows).

As best seen in Figs. 8-10, the upper jaw 14 has a front end 14a distal from the pivot means 16. A replaceable tip 70 may be mounted at the front end 14a and welded on seat 17. The replaceable tip 70 is preferably made of hardened steel.

To prevent the replaceable tip 70 from being sheared off by lateral forces developed during the shearing process, the replaceable tip 70 preferably comprises a dovetail portion 70a that interlocks with a mortise 17a formed in the front end seat 17 of the upper jaw 14. The replaceable tip 70 may be suitably mounted to the seat 17 by bolts 72.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiment be considered in all respects as illustrative and not restrictive, reference being made to the appended claims rather than to the foregoing description to indicate the scope of the invention.

Claims

WHAT IS CLAIMED:
1. A heavy-duty demolition apparatus for attachment to the boom structure and hydraulic system of an excavator, comprising:
(a) a lower j aw and an upper j aw and pivot means interconnecting the j aws together, means for attachment to the boom structure of the excavator, the upper jaw having an upper shear blade, the lower jaw having at least one lower shear blade, the lower jaw also having a rigid guide blade lying along the lower shear blade and in spaced relation therewith, the outer ends of the shear blade and guide blade being adjacent each other, and a tie plate securing the outer ends of the lower shear blade and the guide blade together, further comprising an open slot between the lower shear blade and the adjacent guide blade to receive the upper shear blade therein, and the upper jaw having means for attachment to the hydraulic system of the excavator for closing and opening the upper jaw relative to the lower jaw; the lower jaw and the upper jaw shearing a workpiece when the upper jaw is closed upon the lower jaw; and
(b) an indexable, rotatable cross blade removably mounted to the inside of the tie plate substantially transverse to the lower shear blade and to the guide blade, the cross blade having four cutting surfaces for successive exposure and shearing.
2. The heavy-duty demolition apparatus of claim 1, wherein the cross blade and the tie plate form a first angle therebetween.
3. The heavy-duty demolition apparatus of claim 2, wherein the first angle is acute.
4. The heavy-duty demolition apparatus of claim 3, wherein the first angle is between one degree and thirty degrees.
5. The heavy-duty demolition apparatus of claim 4, wherein the first angle is between one degree and twenty degrees.
6. The heavy-duty demolition apparatus of claim 5, wherein the first angle is about ten degrees.
7. The heavy-duty demolition apparatus of claim 1, further comprising primary and secondary lower shear blades. The primary blade lying closest to the pivot and being approximately twice as long as the secondary blade.
8. The heavy-duty demolition apparatus of claim 7, wherein each of the two lower shear blades has four cutting edges rotatably mounted on the lower jaw to successively bring each of the four cutting edges into position for shearing the workpiece.
9. The heavy-duty demolition apparatus of claim 1, further comprising two upper shear blades, each having four cutting surfaces.
10. The heavy-duty demolition apparatus of claim 1 , the upper j aw further comprising a replaceable tip at the end of the upper jaw distal from the pivot means.
11. The heavy-duty demolition apparatus of claim 10, wherein the replaceable tip further comprises a dovetail portion interlocking with a mortise portion on a blade tip seat on the upper jaw.
12. A heavy-duty demolition apparatus for attachment to the boom structure and hydraulic system of an excavator, comprising:
(a) a lower jaw and an upper jaw and pivot means interconnecting the jaws together, means for attachment to the boom structure of the excavator, the upper jaw having an upper shear blade, the lower jaw having at least one lower shear blade, the lower jaw also having a rigid guide blade lying along the lower shear blade and in spaced relation therewith, the outer ends of the shear blade and guide blade being adjacent each other, and a tie plate securing the outer ends of the lower shear blade and the guide blade together, further comprising an open slot between the lower shear blade and the adjacent guide blade to receive the upper shear blade therein, and the upper jaw having means for attachment to the hydraulic system of the excavator for closing and opening the upper jaw relative to the lower jaw; the lower jaw and the upper jaw shearing a workpiece when the upper jaw is closed upon the lower jaw; and
(b) an indexable, replaceable piercing and shearing tip removably mounted in a seat at the distal end of the upper jaw.
13. The heavy-duty demolition apparatus of claim 12, further comprising an indexable, rotatable cross blade removably mounted to the inside of the tie plate substantially transverse to the lower shear blade and to the guide blade, the cross blade having four cutting surfaces for successive exposure and shearing.
14. The heavy-duty demolition apparatus of claim 13, wherein the cross blade and the tie plate form a first angle therebetween between one and thirty degrees.
15. The heavy-duty demolition apparatus of claim 12, further comprising primary and secondary lower shear blades, the primary blade lying closest to the pivot and being approximately twice as long as the secondary blade.
16. The heavy-duty demolition apparatus of claim 12, wherein the replaceable tip further comprises a dovetail portion interlocking with a mortise portion on a blade tip seat on the upper jaw.
17. A heavy-duty demolition apparatus for attachment to the boom structure and hydraulic system of an excavator, comprising:
(a) a lower j aw and an upper j aw and pivot means interconnecting the j aws together, means for attachment to the boom structure of the excavator, the upper jaw having an upper shear blade, the lower jaw having at least one lower shear blade, the lower jaw also having a rigid guide blade lying along the lower shear blade and in spaced relation therewith, the outer ends of the shear blade and guide blade being adjacent each other, and a tie plate securing the outer ends of the lower shear blade and the guide blade together, further comprising an open slot between the lower shear blade and the adjacent guide blade to receive the upper shear blade therein, and the upper jaw having means for attachment to the hydraulic system of the excavator for closing and opening the upper jaw relative to the lower jaw; the lower jaw and the upper jaw shearing a workpiece when the upper jaw is closed upon the lower jaw;
(b) an indexable, rotatable cross blade removably mounted to the inside of the tie plate substantially transverse to the lower shear blade and to the guide blade, the cross blade having four cutting surfaces for successive exposure and shearing; and
(c) an indexable, replaceable piercing and shearing tip removably mounted in a seat at the distal end of the upper jaw.
18. The heavy-duty demolition apparatus of claim 17, wherein the cross blade and the tie plate form a first angle therebetween between one and thirty degrees.
19. The heavy-duty demolition apparatus of claim 17, further comprising shear blades, one being a primary shear blade lying distal from the tie plate and the other being a secondary shear blade lying adjacent to the tie plate.
20. The heavy-duty demolition apparatus of claim 17, wherein the replaceable tip further comprises a dovetail portion interlocking with a mortise portion on the upper jaw.
PCT/US2001/007844 1998-11-25 2001-03-12 Shear with replaceable tip and rotatable cross blade WO2001068992A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US09/524,904 US6926217B1 (en) 1998-11-25 2000-03-14 Heavy-duty demolition apparatus with replaceable tip and rotatable cross blade
US09/524,904 2000-03-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU4915601A AU4915601A (en) 2000-03-14 2001-03-12 Shear with replaceable tip and rotatable cross blade

Publications (1)

Publication Number Publication Date
WO2001068992A1 true WO2001068992A1 (en) 2001-09-20

Family

ID=24091129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/007844 WO2001068992A1 (en) 1998-11-25 2001-03-12 Shear with replaceable tip and rotatable cross blade

Country Status (2)

Country Link
AU (1) AU4915601A (en)
WO (1) WO2001068992A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004045795A1 (en) * 2002-11-18 2004-06-03 Genesis Equipment And Manufacturing, Inc. Demolition shear with replaceable shearing tip
US7354010B2 (en) 2002-11-12 2008-04-08 John R. Ramun Single jaw set multiple tool attachment system
WO2010099980A1 (en) * 2009-03-06 2010-09-10 Lst Gmbh Attachment for construction equipment
EP2379285A1 (en) * 2008-12-18 2011-10-26 John R. Ramun Keyless coupling arrangement
US8083163B1 (en) 2010-07-29 2011-12-27 Company Wrench, Ltd. Demolition machine method and apparatus featuring shear or pulverizer with magnet
US8231071B2 (en) 2009-08-07 2012-07-31 John R. Ramun Blade set for jaws used in rail breaking demolition equipment
US8628035B2 (en) 2009-08-07 2014-01-14 John R. Ramun Blade set for jaws used in rail breaking demolition equipment
US8646709B2 (en) 2012-04-11 2014-02-11 John R. Ramun Jaw set with serrated cutting blades
US8770502B1 (en) 2010-06-14 2014-07-08 Company Wrench, Ltd. Demolition machine retrofit method and apparatus and demolition method
US9518372B2 (en) 2013-04-25 2016-12-13 Caterpillar Inc. Adjustment mechanism for adjusting jaws of shear
US10252356B2 (en) 2013-04-09 2019-04-09 Genesis Attachments, Llc Demolition shear and demolition shear piercing tip insert and nose configuration

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187868A (en) * 1992-06-16 1993-02-23 Hall Charlie R Metal demolition shear
US5533682A (en) * 1993-09-02 1996-07-09 Methold 's-Hertogenbosch B.V. Device for crushing and/or cutting material
JPH09195528A (en) * 1996-01-16 1997-07-29 Nippon Pneumatic Mfg Co Ltd Steel member cutting machine
US5860214A (en) * 1995-08-24 1999-01-19 Ohyodo Diesel Co., Ltd. Shearing machine with sickle-shaped blade
US5894666A (en) * 1997-03-17 1999-04-20 Npk Research, Inc. Cutting and piercing tips for a metal cutting shear
US5926958A (en) * 1997-10-03 1999-07-27 Allied Gator, Inc. Metal cutting shear and piercing tip therefor
US5992023A (en) * 1998-07-31 1999-11-30 The Stanley Works Shear with interchangeable wear parts

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187868A (en) * 1992-06-16 1993-02-23 Hall Charlie R Metal demolition shear
US5533682A (en) * 1993-09-02 1996-07-09 Methold 's-Hertogenbosch B.V. Device for crushing and/or cutting material
US5860214A (en) * 1995-08-24 1999-01-19 Ohyodo Diesel Co., Ltd. Shearing machine with sickle-shaped blade
JPH09195528A (en) * 1996-01-16 1997-07-29 Nippon Pneumatic Mfg Co Ltd Steel member cutting machine
US5894666A (en) * 1997-03-17 1999-04-20 Npk Research, Inc. Cutting and piercing tips for a metal cutting shear
US5926958A (en) * 1997-10-03 1999-07-27 Allied Gator, Inc. Metal cutting shear and piercing tip therefor
US5992023A (en) * 1998-07-31 1999-11-30 The Stanley Works Shear with interchangeable wear parts

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 11 28 November 1997 (1997-11-28) *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7354010B2 (en) 2002-11-12 2008-04-08 John R. Ramun Single jaw set multiple tool attachment system
WO2004045795A1 (en) * 2002-11-18 2004-06-03 Genesis Equipment And Manufacturing, Inc. Demolition shear with replaceable shearing tip
US7895755B2 (en) 2002-11-18 2011-03-01 Genesis Attachments, Llc Replaceable demolition shear piercing tip
USRE45341E1 (en) 2002-11-18 2015-01-20 Genesis Attachments, Llc Replaceable demolition shear piercing tip
EP2379285A4 (en) * 2008-12-18 2014-11-12 John R Ramun Keyless coupling arrangement
EP2379285A1 (en) * 2008-12-18 2011-10-26 John R. Ramun Keyless coupling arrangement
US9044815B2 (en) 2008-12-18 2015-06-02 John R. Ramun Keyless coupling arrangement
US8887416B2 (en) 2009-03-06 2014-11-18 Imbolex Engineering Gmbh Attachment for construction equipment
WO2010099980A1 (en) * 2009-03-06 2010-09-10 Lst Gmbh Attachment for construction equipment
US8628035B2 (en) 2009-08-07 2014-01-14 John R. Ramun Blade set for jaws used in rail breaking demolition equipment
US8231071B2 (en) 2009-08-07 2012-07-31 John R. Ramun Blade set for jaws used in rail breaking demolition equipment
US8770502B1 (en) 2010-06-14 2014-07-08 Company Wrench, Ltd. Demolition machine retrofit method and apparatus and demolition method
US9662661B2 (en) 2010-06-14 2017-05-30 Company Wrench, Ltd. Demolition machine retrofit method and apparatus and demolition method
US8083163B1 (en) 2010-07-29 2011-12-27 Company Wrench, Ltd. Demolition machine method and apparatus featuring shear or pulverizer with magnet
US8646709B2 (en) 2012-04-11 2014-02-11 John R. Ramun Jaw set with serrated cutting blades
US10252356B2 (en) 2013-04-09 2019-04-09 Genesis Attachments, Llc Demolition shear and demolition shear piercing tip insert and nose configuration
US9518372B2 (en) 2013-04-25 2016-12-13 Caterpillar Inc. Adjustment mechanism for adjusting jaws of shear

Also Published As

Publication number Publication date
AU4915601A (en) 2001-09-24

Similar Documents

Publication Publication Date Title
CN1051727C (en) Demolition tool for hydraulic excavator
JP3955746B2 (en) Forging method and forging equipment
DE3936113C2 (en) Scrap shear for backhoe
DE69912631T2 (en) Meisselträgerelement with a flange provided in a recess for the removal
US4543719A (en) Shear apparatus
US5221166A (en) Spade-type drill bit apparatus and method
DE3714156C2 (en) Manually actuated cable cutter
US5230151A (en) Heavy duty shear head and mounting support
US5533682A (en) Device for crushing and/or cutting material
CA2219036C (en) Coupling device for locking an excavation tooth onto an adaptor
US5139006A (en) Hydraulic concrete pile cutter
EP0382793B1 (en) Concrete crusher
US8424789B2 (en) Demolition tool unit and method of designing and forming a demolition tool unit
US5474242A (en) Demolition tools with jaws having replaceable working surfaces
WO1991008090A1 (en) Cutting bit and block mount
WO2002004750A1 (en) Tooth assembly for implements
US5292079A (en) Concrete breaker with protective cover
US8327547B2 (en) Metal demolition shears with indexable, integrated wear plate/piercing tip
US6234579B1 (en) Cutting tool holder retention assembly
US5894666A (en) Cutting and piercing tips for a metal cutting shear
US5992023A (en) Shear with interchangeable wear parts
CN1849428B (en) Tooth system
US4686767A (en) Metal cutting shear for a backhoe
US4670983A (en) Metal cutting shear and adapter for mounting on a backhoe
DE60021539T2 (en) Scrap shredding device with interchangeable shear afford and breaking teeth

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU JP KR SG

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase in:

Ref country code: JP