CA2705171A1 - Multidirectional sawing assembly for excavator or the like - Google Patents
Multidirectional sawing assembly for excavator or the like Download PDFInfo
- Publication number
- CA2705171A1 CA2705171A1 CA 2705171 CA2705171A CA2705171A1 CA 2705171 A1 CA2705171 A1 CA 2705171A1 CA 2705171 CA2705171 CA 2705171 CA 2705171 A CA2705171 A CA 2705171A CA 2705171 A1 CA2705171 A1 CA 2705171A1
- Authority
- CA
- Canada
- Prior art keywords
- assembly
- saw
- sawing
- piston
- saw blade
- Prior art date
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/965—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of metal-cutting or concrete-crushing implements
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shovels (AREA)
Abstract
The present invention provides a multidirectional sawing assembly for excavator or the like allowing a saw blade to be positioned in almost any plane. The multidirectional rotating sawing assembly may be displaced and/or oriented using the standard control commands or means in excavators or the like, which are usually hydraulic means.
Description
File number: 8118-021 Revision: as filed Date: May 25, 2010 Title [0001 ] Multidirectional sawing assembly for excavator or the like Cross-Reference to Related Applications [0002] The present patent application claims the benefits of priority of commonly assigned Canadian Patent Application no. 2,666,713, entitled "Multidirectional Sawing Assembly for Excavator or the Like" and filed at the Canadian Patent Office on May 25, 2009.
Field of the Invention [0003] The present invention relates to a rotating sawing assembly. In particular, the present invention relates to a multidirectional rotating sawing assembly for attachment to a (hydraulic) boom, whether mounted on a vehicle or not.
Background of the Invention [0004] A conventional excavator comprises an excavator body and cab, where the operator sits, together with a hydraulic arm or boom joined to the body. The hydraulic arm usually comprises two sets of beam arrangements articulated together at a knee joint, a first beam arrangement being joined to the body of the excavator by a further articulated joint and a second beam arrangement carrying at its opposite end to the knee joint a tool, such as a digger bucket. By hydraulically operating and pivoting the beam arrangements about the knee joint and the joint to the body, the arm can be extended away from the body, brought back towards the body, lifted, or lowered, all movement being in a single plane relative to the body. The number of orientations which a tool attached to the hydraulic arm is able to take up relative to the body is therefore limited and this can present difficulties in tool operation.
File number: 8118-021 Revision: as filed Date: May 25, 2010 [0005] A need has existed for quite some time for an improved multidirectional rotating sawing assembly.
Field of the Invention [0003] The present invention relates to a rotating sawing assembly. In particular, the present invention relates to a multidirectional rotating sawing assembly for attachment to a (hydraulic) boom, whether mounted on a vehicle or not.
Background of the Invention [0004] A conventional excavator comprises an excavator body and cab, where the operator sits, together with a hydraulic arm or boom joined to the body. The hydraulic arm usually comprises two sets of beam arrangements articulated together at a knee joint, a first beam arrangement being joined to the body of the excavator by a further articulated joint and a second beam arrangement carrying at its opposite end to the knee joint a tool, such as a digger bucket. By hydraulically operating and pivoting the beam arrangements about the knee joint and the joint to the body, the arm can be extended away from the body, brought back towards the body, lifted, or lowered, all movement being in a single plane relative to the body. The number of orientations which a tool attached to the hydraulic arm is able to take up relative to the body is therefore limited and this can present difficulties in tool operation.
File number: 8118-021 Revision: as filed Date: May 25, 2010 [0005] A need has existed for quite some time for an improved multidirectional rotating sawing assembly.
[0006] Normally, the saw is attached directly to the extremity of the arm of the excavator and can be used to saw vertically only. This type of saw mounted on an excavator is limited in use because they can not be used when the ground is not levelled or is horizontal.
[0007] The US patent 5,561,926 (Stratti) discloses an articulating mounting arrangement for excavator, however, the positions of the saw blade are limited to the number of locking positions, predetermined by the number of holes in the structure of the sawing assembly that can receive locking pins. Furthermore, the user has to manually place and remove a plurality of locking pins to the change the position or orientation of the saw.
[0008] There is therefore a need for a new multidirectional rotating sawing assembly to be installed on equipment such as a loader, an excavator, or a boom.
Furthermore, there is a need for a multidirectional rotating sawing assembly that is controllable by using usual means as for excavators and also for a multidirectional rotating sawing assembly allowing the blade to be disposed or oriented at any angle.
Objects of the Invention [0009] It is a first object of the present invention to provide a sawing assembly allowing the saw blade to be disposed in almost any plane.
Furthermore, there is a need for a multidirectional rotating sawing assembly that is controllable by using usual means as for excavators and also for a multidirectional rotating sawing assembly allowing the blade to be disposed or oriented at any angle.
Objects of the Invention [0009] It is a first object of the present invention to provide a sawing assembly allowing the saw blade to be disposed in almost any plane.
[0010] It is a further object to provide a multidirectional rotating sawing assembly that may be displaced and/or oriented using the standard control commands or means in excavators or the like, which are usually hydraulic means.
[0011 ] Other and further objects and advantages of the present invention will be obvious upon an understanding of the illustrative embodiments about to be described or will be File number: 8118-021 Revision: as filed Date: May 25, 2010 indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.
Summary of the Invention [0012] The aforesaid and other objectives of the present invention are realized by generally providing a multidirectional sawing assembly for an excavator or the like, the excavator comprising a boom having a first piston, the sawing assembly comprising a connecting member adapted to be connected to the boom and the first piston; a rotating assembly comprising a hydraulic rotary actuator having a longitudinal axis and a second piston, the rotating assembly being connected to the connecting member, the rotating assembly rotating along the longitudinal axis under the action of the second piston and a motorized saw assembly comprising a circular saw blade, the saw assembly being connected to the rotating assembly, wherein the saw blade may be positioned in almost any plane and is not limited to predetermined positions.
[0013] In a preferred embodiment, the position of the saw is reached by actuating the boom, the first piston and the second piston with no need to manipulate the saw assembly. The saw assembly is also displaceable in the plane formed by the boom and the first piston under the action of the first piston. The saw assembly is also displaceable vertically and horizontally by moving the boom.
[0014] In a preferred embodiment, the sawing assembly comprises a cooling system to cool the saw blade.
[0015] In a further preferred embodiment, the sawing assembly comprising a retractable guard for the saw blade. The retractable guard may further comprises antifriction blocks preventing the saw blade to contact the retractable guard.
[0016] In a preferred embodiment, the saw blade is a diamond saw blade. In a still preferred embodiment, the saw blade has a diameter of at least 5 feet.
File number: 8118-021 Revision: as filed Date: May 25, 2010 Brief Description of the Drawings [0017] The above and other objects, features and advantages of the invention will become more readily apparent from the following description, reference being made to the accompanying drawings in which:
[0018] Figures 1 to 26 are drawings and pictures of the sawing assembly of the present invention.
Detailed Description of the Preferred Embodiment [0019] A novel multidirectional rotating sawing assembly will be described hereinafter.
Although the invention is described in terms of specific illustrative embodiment(s), it is to be understood that the embodiment(s) described herein are by way of example only and that the scope of the invention is not intended to be limited thereby.
[0020] As shown in Figures 1 to 26, the sawing assembly 1 is connected to the boom of an excavator and to the hydraulic piston 10 of the excavator, the boom of the excavator having arms, or elongated parts, (which are usually in pair) 12, 14 and 16.
When the hydraulic piston 10 is extended by extending the piston 10, as shown in Figures 17 to 24, the saw 5 or sawing assembly 1 moves, as indicated in Figure 1, along the arrow 20. A
second position of the saw 5' is shown in dotted line. The sawing assembly 1 rotates about the second rotation axis 32.
[0021] The sawing assembly I is connected to the boom 50 through the connecting member 46. In a preferred embodiment, the connecting member 46 comprises two semi-circular openings 54 and 56 that interact with the arm 14 of the boom. The connecting member 46 is secured to the boom 50 with a locking plate 58 which is kept in place with a bolt 60 connected to the boom. The locking plate 58 is inserted in the opening 62, the bolt 60 is fixed to the securing portion 64 and it secures the sawing assembly 1 in this File number: 8118-021 Revision: as filed Date: May 25, 2010 position. It is to be understood that another method can be used to secure the sawing assembly to the boom without departing from the spirit of the present invention.
[0022] The hydraulic or other type of motor driving the saw is comprised in the housing 40. The housing 40 is connected to a second plate 68 which is connected to the first plate 66. The first plate 66 is connected to the hydraulic rotating actuator comprising a substantially cylindrical housing 70 and a hydraulic piston (not shown) comprised inside the cylindrical housing 70.
[0023] The hydraulic rotating actuator is a mechanism composed of a housing 70 and a hydraulic piston comprising two moving parts (not shown): a central through shaft and a doughnut-shaped piston. As hydraulic pressure is applied on the hydraulic rotating actuator, the hydraulic piston is displaced axially, while the helical gearing on the piston and housing gear cause the simultaneous rotation. The first rotation axis 30 is parallel to the central through shaft. The saw 5 rotates about the first axis, as more particularly shown in Figures 2 to 5 and 8 to 16. A hydraulic rotary actuator is shown in the US patent 4,906,161.
Prior or during the displacement induced by the hydraulic piston 10, the saw 5 or sawing assembly 10 may be in any position about the first rotation axis 30. The third rotation axis 34 is located at the connection between the boom 50 and the truck 52, as shown in Figure 22. By displacing the saw assembly along the different rotation axis described previously, the saw blade may be positioned in almost any plane.
[0024] The hydraulic rotary actuator (as shown in Figure 2), is fixed to the third plate 72, the third plate comprising two extending portions 74 and 76 between which the hydraulic rotary actuator is rotatably fixed. In the embodiment shown, the third plate 72 is at an angle 78 which is approximately of 45 degrees but it is to be understood that this plate could be at any other angle.
File number: 8118-021 Revision: as filed Date: May 25, 2010 [0025] One form for the structure supporting the hydraulic rotary actuator is shown in the Figures 1 to 26, but it is to be understood that this structure could have a different shape or other arrangement without departing from the object of the present invention.
[0026] The structure supporting the rotating assembly comprises the third plate 80 and a fourth plate 82 from which two plates extend on each side of the fourth plate 82. The structure supporting the rotating assembly is fixed to the first plate 66. In Figures 1 to 26 it is shown that welding is used to fix the structure supporting the rotating assembly but other means could be used or other means used in combination with welding such as bolts and nuts, for example.
[0027] The sawing assembly comprises means known in the art to be connected to the hydraulic system of the boom/excavator.
[0028] The term "excavator" is intended to encompass any heavy plant machine and is not limited to a conventional excavator.
[0029] The multidirectional rotating sawing assembly may be permanently fixed to the excavator arm, although it is preferred that it is detachable.
[0030] Preferably, an additional cooling system is provided to cool the blade to prevent it to become too hot.
[0031] In one embodiment, the blade is a diamond saw blade which is able to cut any kind of concrete, with or without armatures. Other type of saw blade may be used.
[0032] The sawing assembly of the present invention is useful to cut items such as, but not limited to, rock, granite, concrete, wood, etc...
File number: 8118-021 Revision: as filed Date: May 25, 2010 [0033] Several sizes of blades may be used with the sawing assembly. In one embodiment, the blade has a diameter of 6 feet. The thickness of the blade has to be chosen considering the fact that there are considerable forces applied on the blade.
[0034] The guard 42 for the saw blade is fixed to the sawing assembly using appropriate means such as, for example, bolts and nuts connecting the guard 42 and the structure supporting the rotating assembly. The guard 42 covering the saw 5 will be mobile around the blade or saw 5 to ensure a better protection during use, following the cutting angle.
[0035] The guard 42 may be larger at its opened side to prevent the blade to contact the guard when forces are applied on the blade. The guard may be retractable to ensure a better protection during use.
[0036] Antifriction blocks such as Teflon" blocks 44 (or other material having a low coefficient of friction) may be installed on the inside surface of the guard to prevent the blade to contact the guard. The Teflon blocks may have any suitable shape.
[0037] While illustrative and presently preferred embodiment(s) of the invention have been described in detail hereinabove, it is to be understood that the inventive concepts may be otherwise variously embodied and employed and that the appended claims are intended to be construed to include such variations except insofar as limited by the prior art.
[0011 ] Other and further objects and advantages of the present invention will be obvious upon an understanding of the illustrative embodiments about to be described or will be File number: 8118-021 Revision: as filed Date: May 25, 2010 indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.
Summary of the Invention [0012] The aforesaid and other objectives of the present invention are realized by generally providing a multidirectional sawing assembly for an excavator or the like, the excavator comprising a boom having a first piston, the sawing assembly comprising a connecting member adapted to be connected to the boom and the first piston; a rotating assembly comprising a hydraulic rotary actuator having a longitudinal axis and a second piston, the rotating assembly being connected to the connecting member, the rotating assembly rotating along the longitudinal axis under the action of the second piston and a motorized saw assembly comprising a circular saw blade, the saw assembly being connected to the rotating assembly, wherein the saw blade may be positioned in almost any plane and is not limited to predetermined positions.
[0013] In a preferred embodiment, the position of the saw is reached by actuating the boom, the first piston and the second piston with no need to manipulate the saw assembly. The saw assembly is also displaceable in the plane formed by the boom and the first piston under the action of the first piston. The saw assembly is also displaceable vertically and horizontally by moving the boom.
[0014] In a preferred embodiment, the sawing assembly comprises a cooling system to cool the saw blade.
[0015] In a further preferred embodiment, the sawing assembly comprising a retractable guard for the saw blade. The retractable guard may further comprises antifriction blocks preventing the saw blade to contact the retractable guard.
[0016] In a preferred embodiment, the saw blade is a diamond saw blade. In a still preferred embodiment, the saw blade has a diameter of at least 5 feet.
File number: 8118-021 Revision: as filed Date: May 25, 2010 Brief Description of the Drawings [0017] The above and other objects, features and advantages of the invention will become more readily apparent from the following description, reference being made to the accompanying drawings in which:
[0018] Figures 1 to 26 are drawings and pictures of the sawing assembly of the present invention.
Detailed Description of the Preferred Embodiment [0019] A novel multidirectional rotating sawing assembly will be described hereinafter.
Although the invention is described in terms of specific illustrative embodiment(s), it is to be understood that the embodiment(s) described herein are by way of example only and that the scope of the invention is not intended to be limited thereby.
[0020] As shown in Figures 1 to 26, the sawing assembly 1 is connected to the boom of an excavator and to the hydraulic piston 10 of the excavator, the boom of the excavator having arms, or elongated parts, (which are usually in pair) 12, 14 and 16.
When the hydraulic piston 10 is extended by extending the piston 10, as shown in Figures 17 to 24, the saw 5 or sawing assembly 1 moves, as indicated in Figure 1, along the arrow 20. A
second position of the saw 5' is shown in dotted line. The sawing assembly 1 rotates about the second rotation axis 32.
[0021] The sawing assembly I is connected to the boom 50 through the connecting member 46. In a preferred embodiment, the connecting member 46 comprises two semi-circular openings 54 and 56 that interact with the arm 14 of the boom. The connecting member 46 is secured to the boom 50 with a locking plate 58 which is kept in place with a bolt 60 connected to the boom. The locking plate 58 is inserted in the opening 62, the bolt 60 is fixed to the securing portion 64 and it secures the sawing assembly 1 in this File number: 8118-021 Revision: as filed Date: May 25, 2010 position. It is to be understood that another method can be used to secure the sawing assembly to the boom without departing from the spirit of the present invention.
[0022] The hydraulic or other type of motor driving the saw is comprised in the housing 40. The housing 40 is connected to a second plate 68 which is connected to the first plate 66. The first plate 66 is connected to the hydraulic rotating actuator comprising a substantially cylindrical housing 70 and a hydraulic piston (not shown) comprised inside the cylindrical housing 70.
[0023] The hydraulic rotating actuator is a mechanism composed of a housing 70 and a hydraulic piston comprising two moving parts (not shown): a central through shaft and a doughnut-shaped piston. As hydraulic pressure is applied on the hydraulic rotating actuator, the hydraulic piston is displaced axially, while the helical gearing on the piston and housing gear cause the simultaneous rotation. The first rotation axis 30 is parallel to the central through shaft. The saw 5 rotates about the first axis, as more particularly shown in Figures 2 to 5 and 8 to 16. A hydraulic rotary actuator is shown in the US patent 4,906,161.
Prior or during the displacement induced by the hydraulic piston 10, the saw 5 or sawing assembly 10 may be in any position about the first rotation axis 30. The third rotation axis 34 is located at the connection between the boom 50 and the truck 52, as shown in Figure 22. By displacing the saw assembly along the different rotation axis described previously, the saw blade may be positioned in almost any plane.
[0024] The hydraulic rotary actuator (as shown in Figure 2), is fixed to the third plate 72, the third plate comprising two extending portions 74 and 76 between which the hydraulic rotary actuator is rotatably fixed. In the embodiment shown, the third plate 72 is at an angle 78 which is approximately of 45 degrees but it is to be understood that this plate could be at any other angle.
File number: 8118-021 Revision: as filed Date: May 25, 2010 [0025] One form for the structure supporting the hydraulic rotary actuator is shown in the Figures 1 to 26, but it is to be understood that this structure could have a different shape or other arrangement without departing from the object of the present invention.
[0026] The structure supporting the rotating assembly comprises the third plate 80 and a fourth plate 82 from which two plates extend on each side of the fourth plate 82. The structure supporting the rotating assembly is fixed to the first plate 66. In Figures 1 to 26 it is shown that welding is used to fix the structure supporting the rotating assembly but other means could be used or other means used in combination with welding such as bolts and nuts, for example.
[0027] The sawing assembly comprises means known in the art to be connected to the hydraulic system of the boom/excavator.
[0028] The term "excavator" is intended to encompass any heavy plant machine and is not limited to a conventional excavator.
[0029] The multidirectional rotating sawing assembly may be permanently fixed to the excavator arm, although it is preferred that it is detachable.
[0030] Preferably, an additional cooling system is provided to cool the blade to prevent it to become too hot.
[0031] In one embodiment, the blade is a diamond saw blade which is able to cut any kind of concrete, with or without armatures. Other type of saw blade may be used.
[0032] The sawing assembly of the present invention is useful to cut items such as, but not limited to, rock, granite, concrete, wood, etc...
File number: 8118-021 Revision: as filed Date: May 25, 2010 [0033] Several sizes of blades may be used with the sawing assembly. In one embodiment, the blade has a diameter of 6 feet. The thickness of the blade has to be chosen considering the fact that there are considerable forces applied on the blade.
[0034] The guard 42 for the saw blade is fixed to the sawing assembly using appropriate means such as, for example, bolts and nuts connecting the guard 42 and the structure supporting the rotating assembly. The guard 42 covering the saw 5 will be mobile around the blade or saw 5 to ensure a better protection during use, following the cutting angle.
[0035] The guard 42 may be larger at its opened side to prevent the blade to contact the guard when forces are applied on the blade. The guard may be retractable to ensure a better protection during use.
[0036] Antifriction blocks such as Teflon" blocks 44 (or other material having a low coefficient of friction) may be installed on the inside surface of the guard to prevent the blade to contact the guard. The Teflon blocks may have any suitable shape.
[0037] While illustrative and presently preferred embodiment(s) of the invention have been described in detail hereinabove, it is to be understood that the inventive concepts may be otherwise variously embodied and employed and that the appended claims are intended to be construed to include such variations except insofar as limited by the prior art.
Claims (9)
1) A multidirectional sawing assembly for an excavator or the like, said excavator comprising a boom having a first piston, said sawing assembly comprising:
a) a connecting member adapted to be connected to said boom and said first piston;
b) a rotating assembly comprising a hydraulic rotary actuator having a longitudinal axis and a second piston, said rotating assembly being connected to said connecting member, said rotating assembly rotating along said longitudinal axis under the action of said second piston; and c) a motorized saw assembly comprising a circular saw blade, said saw assembly being connected to said rotating assembly, wherein said saw blade may be positioned in almost any plane and is not limited to predetermined positions.
a) a connecting member adapted to be connected to said boom and said first piston;
b) a rotating assembly comprising a hydraulic rotary actuator having a longitudinal axis and a second piston, said rotating assembly being connected to said connecting member, said rotating assembly rotating along said longitudinal axis under the action of said second piston; and c) a motorized saw assembly comprising a circular saw blade, said saw assembly being connected to said rotating assembly, wherein said saw blade may be positioned in almost any plane and is not limited to predetermined positions.
2) The sawing assembly of claim 1, wherein the position of said saw is reached by actuating said boom, said first piston and said second piston with no need to manipulate the saw assembly.
3) The sawing assembly of claim 1, wherein said saw assembly is displaceable in the plane formed by said boom and said first piston under the action of said first piston.
4) The sawing assembly of claim 1, wherein said saw assembly is displaceable vertically and horizontally by moving said boom.
5) The sawing assembly of claim 1, wherein said sawing assembly comprises a cooling system to cool said saw blade.
6) The sawing assembly of claim 1, further comprising a retractable guard for said saw blade.
7) The sawing assembly of claim 6, wherein said retractable guard further comprises antifriction blocks preventing said saw blade to contact said retractable guard.
8) The sawing assembly of claim 1, wherein said saw blade is a diamond saw blade.
9) The sawing assembly of claim 1, wherein said saw blade has a diameter of at least 5 feet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2705171 CA2705171A1 (en) | 2009-05-25 | 2010-05-25 | Multidirectional sawing assembly for excavator or the like |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,666,713 | 2009-05-25 | ||
| CA 2666713 CA2666713A1 (en) | 2009-05-25 | 2009-05-25 | Multidirectional sawing assembly for excavator or the like |
| CA 2705171 CA2705171A1 (en) | 2009-05-25 | 2010-05-25 | Multidirectional sawing assembly for excavator or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2705171A1 true CA2705171A1 (en) | 2010-11-25 |
Family
ID=43242675
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2666713 Abandoned CA2666713A1 (en) | 2009-05-25 | 2009-05-25 | Multidirectional sawing assembly for excavator or the like |
| CA 2705171 Abandoned CA2705171A1 (en) | 2009-05-25 | 2010-05-25 | Multidirectional sawing assembly for excavator or the like |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2666713 Abandoned CA2666713A1 (en) | 2009-05-25 | 2009-05-25 | Multidirectional sawing assembly for excavator or the like |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2666713A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817804A (en) * | 2014-03-20 | 2014-05-28 | 雷刚 | Cutting equipment |
-
2009
- 2009-05-25 CA CA 2666713 patent/CA2666713A1/en not_active Abandoned
-
2010
- 2010-05-25 CA CA 2705171 patent/CA2705171A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2666713A1 (en) | 2010-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20130527 |