CA2010229A1 - Circular saw blade - Google Patents
Circular saw bladeInfo
- Publication number
- CA2010229A1 CA2010229A1 CA002010229A CA2010229A CA2010229A1 CA 2010229 A1 CA2010229 A1 CA 2010229A1 CA 002010229 A CA002010229 A CA 002010229A CA 2010229 A CA2010229 A CA 2010229A CA 2010229 A1 CA2010229 A1 CA 2010229A1
- Authority
- CA
- Canada
- Prior art keywords
- blade
- central
- blade body
- layer
- layers
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 29
- 239000012792 core layer Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 6
- 230000000284 resting effect Effects 0.000 claims 2
- 210000003739 neck Anatomy 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 9
- 239000004575 stone Substances 0.000 abstract description 6
- 229910003460 diamond Inorganic materials 0.000 abstract description 4
- 239000010432 diamond Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005304 joining Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/025—Details of saw blade body
- B23D61/026—Composite body, e.g. laminated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
TITLE OF THE INVENTION
CIRCULAR SAW BLADE
ABSTRACT OF THE DISCLOSURE
A circular saw blade has a central master disk or blade body and circumferential attachment pieces for the attach-ment of exchangeable cutting or grinding elements of dia-mond or other material suitable for the cutting of stone, secured to the circumference of the master blade. The body of the master blade has a stratified or layered structure of fiber composite synthetic material, whereby butt-jointed circular disk sectors (1.2.1, 1.3.1) form individual circular disk-shaped layers (1.2, 1.3). The butt joints (1.2.2, 1.3.2) between neighboring circular disk sectors (1.2.1, 1.3.1) are displaced at an angle relative to one another from layer (1.2) to layer (1.3).
CIRCULAR SAW BLADE
ABSTRACT OF THE DISCLOSURE
A circular saw blade has a central master disk or blade body and circumferential attachment pieces for the attach-ment of exchangeable cutting or grinding elements of dia-mond or other material suitable for the cutting of stone, secured to the circumference of the master blade. The body of the master blade has a stratified or layered structure of fiber composite synthetic material, whereby butt-jointed circular disk sectors (1.2.1, 1.3.1) form individual circular disk-shaped layers (1.2, 1.3). The butt joints (1.2.2, 1.3.2) between neighboring circular disk sectors (1.2.1, 1.3.1) are displaced at an angle relative to one another from layer (1.2) to layer (1.3).
Description
20~t~9 The invention relates to a circular saw blade particularly of the heavy duty type for cutting or grinding stone, granite, and the like with the aid of exchangeable work performing elements made of diamond or the like materials suitable for such heavy duty operations.
BACKGROUND INFORMATION
Circular saw blades that are predominantly used in stone saws or stone grinders comprise a steel plate,or rather disk with diamond cutting segments firmly soldered or brazed onto the circumference of the steel disk. The major disadvantage of such circular saw blades is that they emit high levels of noise. In addition, they are quite heavy and therefore difficult to handle. Saws of this type may well have a dia-meter of several meters, e.g. five meters. Measures, taken in the construction of the central blade body, to reduce the noise emissions, involve, for example, a partial use of synthetic materials, have until now not been successful with-out also reducing the solidity and material strength of the ~-blade. For example, in a sandwich construction of the central blade body with a foam core, tears in the blade due to oscil-lation of the blade, have been unavoidable heretofore.
.~ . . . . . .. .. . , ~ , ,.: ., . : ; : , . -. .
, ~ . , ,,,, ~, : . .
,.... ' . : - ~ ~ : . ,: : ' :~ . ~ ,:: . ., . - .. . - : . . :
.: . : :: ... .-, , :
. . : . . .
.-. : :~ : . . . . . .
:. : . . ~ - , In view of the foregoing it is the aim of the invention to .
achieve the following objects singly or in combination:
to construct a central blade body for a circular saw blade of the type mentioned above, which emits substan-tially less noise than a steel blade, without reducing the solidity and rigidity of said blade;
to substantially reduce the weight of such blade for an easier handling; and to facilitate the construction of the blade itself and the attachment of replaceable work performing elements to the circumference of the central blade body.
SUMMARY OF THE INVENTI~N .
According to the invention there is provided a circular saw blade of the type described, which is characterized in that the central blade body is a layered structure made of fiber composite materials, wherein the individual layers are formed of sectors cut out of circular disks. The sectors in a layer abut along their radial edges against each other along butt joints which are angularly displaced relative to each other from layer to layer so that the sectors in one layer overlap the butt joints in the other layer or rather neighboring layer.
'' .
'. ,:
BACKGROUND INFORMATION
Circular saw blades that are predominantly used in stone saws or stone grinders comprise a steel plate,or rather disk with diamond cutting segments firmly soldered or brazed onto the circumference of the steel disk. The major disadvantage of such circular saw blades is that they emit high levels of noise. In addition, they are quite heavy and therefore difficult to handle. Saws of this type may well have a dia-meter of several meters, e.g. five meters. Measures, taken in the construction of the central blade body, to reduce the noise emissions, involve, for example, a partial use of synthetic materials, have until now not been successful with-out also reducing the solidity and material strength of the ~-blade. For example, in a sandwich construction of the central blade body with a foam core, tears in the blade due to oscil-lation of the blade, have been unavoidable heretofore.
.~ . . . . . .. .. . , ~ , ,.: ., . : ; : , . -. .
, ~ . , ,,,, ~, : . .
,.... ' . : - ~ ~ : . ,: : ' :~ . ~ ,:: . ., . - .. . - : . . :
.: . : :: ... .-, , :
. . : . . .
.-. : :~ : . . . . . .
:. : . . ~ - , In view of the foregoing it is the aim of the invention to .
achieve the following objects singly or in combination:
to construct a central blade body for a circular saw blade of the type mentioned above, which emits substan-tially less noise than a steel blade, without reducing the solidity and rigidity of said blade;
to substantially reduce the weight of such blade for an easier handling; and to facilitate the construction of the blade itself and the attachment of replaceable work performing elements to the circumference of the central blade body.
SUMMARY OF THE INVENTI~N .
According to the invention there is provided a circular saw blade of the type described, which is characterized in that the central blade body is a layered structure made of fiber composite materials, wherein the individual layers are formed of sectors cut out of circular disks. The sectors in a layer abut along their radial edges against each other along butt joints which are angularly displaced relative to each other from layer to layer so that the sectors in one layer overlap the butt joints in the other layer or rather neighboring layer.
'' .
'. ,:
2~229 1 Advantages of the invention reside in the choise of any suit-able synthetic material that weighs substantially less than steel, yet is suitable for highly solid and rigid structures suitable for the intended heavy duty purposes such as stone cutting. The layering results in a suitable construction that is achieved with relatively low production costs with-out any problems. The replaceable attachment of work perform-ing elements such as cutting tips and grinding elements to the circumference of the central blade body has also been substantially improved because the dovetail mounting secures the elements in the radial direction while lateral layers secure the elements axially.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be clearly understood, it will now be described, by way of example, with reference to the accompanying drawings, wherein:
Fig. 1 shows a perspective view of a section of a circular saw blade according to the in-vention;
Fig. 2 is a radial cross-sectional view of the circular saw blade of Fig. l; and Fig. 3 is an exploded view of a section of the central blade body of the circular saw blade of Fig. 1.
,' 22g 1 ~ETAILED DESCRIPTION OF PREFERRED EXAMPLE EMBODIMENTS AND OF
l'HE BEST MODE OF THE INVENTION
According to Fig. 1, a circular saw blade of the type prefer-ably used for stone working or cutting, comprises a central blade body 1 made of a fiber composite synthetic material, such as glass fibers embedded in a resin or similar bonding agent. The circular saw blade further comprises circumfer-ential metal attachment pieces 2 connected to the circumfer-ence of the blade body 1 for securing interchangeable or replaceable work performing cutting or grinding elements made/ for example, of diamond, but not depicted here. The work performing elements are secured to the pieces 2 in a conventional way.
Figs. 1 and 2 show that the circular saw blade comprises a metal hub structure 3 with a hub bushing or collar 3.1.1 in a central bore of the blade 1 for the connection to a driving shaft not shown. At the circumference of the bush-ing 3.1.1 the metal hub structure 3 comprises a hub disk 3.1 and a ring washer 3.2, which can be placed on the bushing 3.1.1. Both the hub disk 3.1 and the ring washer 3.2 need only to be glued to the blade body 1 during the joining with the blade body 1. If desired, rivets may be used instead of the gluing or additionally thereto. Fig. 1 shows several rivets.
The central blade body 1, according to Fig. 3, is a layered structure having at least three layers with a crosswise fiber orientation in the plane of the layers, whereby at least one . .
- . . .;
~: ' -- ' :
;. .,: . - . ~, ' : . .' ' . :. . , ~ , ~ : ~
1 core layer 1.3 is arranged between two cover layers 1.2. All of the cover layers 1.2 and the core layer 1.3 comprise cir-cular disk sectors 1.2.1 and 1.3.1 that are joined together with butt joints along radially extending lines. The cover layers 1.2 and the core layers 1.3 are layered in such a fashion that the connecting butt joints 1.2.2 and 1.3.2 of the circular disk sectors 1.2.1 and 1.3.1 are displaced at an angle to each other. In the example embodiment, with one core layer 1.3 and two cover layers 1.2, the connecting butt joints 1.2.2 of said cover layers are arranged approxi-mately in the middle between the connecting butt joints 1.3.2 of the core layer 1.3.
The degree of the angle of displacement between a butt joint in one layer and the next butt joint in the neighboring layer depends primarily on the number of layers. Through these eatures in combination with the use of available conven-tional fiber composite synthetic materials such as prepregs, having a sheet or area form, it is possible to economically make the central blade body 1 as a uniform homogeneous struc-ture even though these blades have a diameter of severalmeters, e.g. five meters.
The separation of the core layers 1.3 and the cover layers 1.2 into circular disk sectors 1.3.1 and 1.2.1 simplifies the task of positioning these sectors into a mold for the completion of the central blade body 1 because the sectors are easier to handle, whereby a more secure connection with the attachment pieces 2 is easily achieved. For this purpose, ~, , --.. ~ I , :. " ~.
.~ ~ . . ~ . . ,: . . . .
~0~ 9 1 the core layers 1.3 have teeth 4 evenly spaced along the outer circumference of the core layer. The straight flanks 4.1 of these teeth 4 taper toward the roots 4.2 forming a neck attached to the core layer. The straight flanks 4.1 of the teeth 4 may extend approximately radially. An attachment -piece 2, shown in Fig. l with its dovetailed holding neck 2.1, is arranged in a form-locking fit in the space between two teeth 4. Thus, the attachment pieces 2 are rigidly secured ;
in a radial direction to the central blade body 1. The cover layers 1.2 that close off the spaces between the teeth 4 pro-hibit the movement of the attachment pieces 2 in an axial direction relative to the central blade body 1. The cutting or grinding elements not depicted in the drawings can be screwed onto the attachment pieces 2. -~
After the forming of the central blade body 1 by the above described laminating operation an integral joining of all the circular disk sectors 1.2.1, 1.3.1, as well as the core layers 1.3 and cover layers 1.2 is achieved by hardening or curing of the embedding or matrix material, preferably in an autoclave under controlled temperatures prescribed by the manufacturer of the materials.
It has been found that the present saw blade ensures a non-oscillating operation which in turn assures a very quiet run.
Although the invention has been described with reference to specific example embodiments, it will be appreciated, that ' it is intended to cover all modifications and equivalents within the scope of the appended claims.
. , .- . -, ~ ;.. . ., . - , ; ~ . . . - ,. . .......... ~ :
':.. '' ' . '. '' ' ' . .. ' . . ' . .' ' ' . .. ' . .' ' ' ' ' '
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be clearly understood, it will now be described, by way of example, with reference to the accompanying drawings, wherein:
Fig. 1 shows a perspective view of a section of a circular saw blade according to the in-vention;
Fig. 2 is a radial cross-sectional view of the circular saw blade of Fig. l; and Fig. 3 is an exploded view of a section of the central blade body of the circular saw blade of Fig. 1.
,' 22g 1 ~ETAILED DESCRIPTION OF PREFERRED EXAMPLE EMBODIMENTS AND OF
l'HE BEST MODE OF THE INVENTION
According to Fig. 1, a circular saw blade of the type prefer-ably used for stone working or cutting, comprises a central blade body 1 made of a fiber composite synthetic material, such as glass fibers embedded in a resin or similar bonding agent. The circular saw blade further comprises circumfer-ential metal attachment pieces 2 connected to the circumfer-ence of the blade body 1 for securing interchangeable or replaceable work performing cutting or grinding elements made/ for example, of diamond, but not depicted here. The work performing elements are secured to the pieces 2 in a conventional way.
Figs. 1 and 2 show that the circular saw blade comprises a metal hub structure 3 with a hub bushing or collar 3.1.1 in a central bore of the blade 1 for the connection to a driving shaft not shown. At the circumference of the bush-ing 3.1.1 the metal hub structure 3 comprises a hub disk 3.1 and a ring washer 3.2, which can be placed on the bushing 3.1.1. Both the hub disk 3.1 and the ring washer 3.2 need only to be glued to the blade body 1 during the joining with the blade body 1. If desired, rivets may be used instead of the gluing or additionally thereto. Fig. 1 shows several rivets.
The central blade body 1, according to Fig. 3, is a layered structure having at least three layers with a crosswise fiber orientation in the plane of the layers, whereby at least one . .
- . . .;
~: ' -- ' :
;. .,: . - . ~, ' : . .' ' . :. . , ~ , ~ : ~
1 core layer 1.3 is arranged between two cover layers 1.2. All of the cover layers 1.2 and the core layer 1.3 comprise cir-cular disk sectors 1.2.1 and 1.3.1 that are joined together with butt joints along radially extending lines. The cover layers 1.2 and the core layers 1.3 are layered in such a fashion that the connecting butt joints 1.2.2 and 1.3.2 of the circular disk sectors 1.2.1 and 1.3.1 are displaced at an angle to each other. In the example embodiment, with one core layer 1.3 and two cover layers 1.2, the connecting butt joints 1.2.2 of said cover layers are arranged approxi-mately in the middle between the connecting butt joints 1.3.2 of the core layer 1.3.
The degree of the angle of displacement between a butt joint in one layer and the next butt joint in the neighboring layer depends primarily on the number of layers. Through these eatures in combination with the use of available conven-tional fiber composite synthetic materials such as prepregs, having a sheet or area form, it is possible to economically make the central blade body 1 as a uniform homogeneous struc-ture even though these blades have a diameter of severalmeters, e.g. five meters.
The separation of the core layers 1.3 and the cover layers 1.2 into circular disk sectors 1.3.1 and 1.2.1 simplifies the task of positioning these sectors into a mold for the completion of the central blade body 1 because the sectors are easier to handle, whereby a more secure connection with the attachment pieces 2 is easily achieved. For this purpose, ~, , --.. ~ I , :. " ~.
.~ ~ . . ~ . . ,: . . . .
~0~ 9 1 the core layers 1.3 have teeth 4 evenly spaced along the outer circumference of the core layer. The straight flanks 4.1 of these teeth 4 taper toward the roots 4.2 forming a neck attached to the core layer. The straight flanks 4.1 of the teeth 4 may extend approximately radially. An attachment -piece 2, shown in Fig. l with its dovetailed holding neck 2.1, is arranged in a form-locking fit in the space between two teeth 4. Thus, the attachment pieces 2 are rigidly secured ;
in a radial direction to the central blade body 1. The cover layers 1.2 that close off the spaces between the teeth 4 pro-hibit the movement of the attachment pieces 2 in an axial direction relative to the central blade body 1. The cutting or grinding elements not depicted in the drawings can be screwed onto the attachment pieces 2. -~
After the forming of the central blade body 1 by the above described laminating operation an integral joining of all the circular disk sectors 1.2.1, 1.3.1, as well as the core layers 1.3 and cover layers 1.2 is achieved by hardening or curing of the embedding or matrix material, preferably in an autoclave under controlled temperatures prescribed by the manufacturer of the materials.
It has been found that the present saw blade ensures a non-oscillating operation which in turn assures a very quiet run.
Although the invention has been described with reference to specific example embodiments, it will be appreciated, that ' it is intended to cover all modifications and equivalents within the scope of the appended claims.
. , .- . -, ~ ;.. . ., . - , ; ~ . . . - ,. . .......... ~ :
':.. '' ' . '. '' ' ' . .. ' . . ' . .' ' ' . .. ' . .' ' ' ' ' '
Claims (6)
1. A circular saw blade, comprising a central blade body, circumferential attachment pieces secured to a circum-ferential rim of said central blade body for attaching work performing elements to said central blade body, said central blade body comprising a plurality of blade layers of fiber composite synthetic material, each layer including a number of circular disk sectors butt-jointed to form the respective layer, and wherein butt-joints are angularly displaced from layer to layer relative to each other.
2. The blade of claim 1, wherein said plurality of blade layers comprises at least three layers including a core layer between two cover layers, said core layer having a circumferential rim with dovetail teeth in said rim, each dovetail tooth having a root joined to said circumferential rim of said core layer, each tooth having straight flanks tapering toward its root.
3. The blade of claim 2, wherein said attachment pieces have dovetailed necks fitting in a form-locking manner into gaps between two neighboring teeth in said core layer.
4. The blade of claim 1, further comprising a central bore for receiving a drive shaft, and a metal hub structure surrounding said central bore.
5. The blade of claim 4, wherein said metal hub structure comprises a hub disk with a central bushing fitting into said central bore, said bushing having a bore for a drive shaft and protruding axially from said central blade body on one side of said central blade body, said hub disk resting against the other side of said central blade body, and a ring washer surrounding said protruding bushing and resting against said one side of said central blade body.
6. The blade of claim 5, further comprising rivets extending through said ring washer, through said central blade body, and through said hub disk for securing said metal hub structure to said central blade body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3904703A DE3904703A1 (en) | 1989-02-16 | 1989-02-16 | Circular saw blade |
| DEP3904703.2-14 | 1989-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2010229A1 true CA2010229A1 (en) | 1990-08-16 |
Family
ID=6374245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002010229A Abandoned CA2010229A1 (en) | 1989-02-16 | 1990-02-16 | Circular saw blade |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA2010229A1 (en) |
| DE (1) | DE3904703A1 (en) |
| FR (1) | FR2645057A1 (en) |
| IT (1) | IT1238043B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865571A (en) * | 1997-06-17 | 1999-02-02 | Norton Company | Non-metallic body cutting tools |
| CN102950656A (en) * | 2012-10-17 | 2013-03-06 | 南光日 | Carbon saw blade and manufacture method thereof |
| WO2015138509A1 (en) * | 2014-03-11 | 2015-09-17 | Western Saw Manufacturers, Inc. | Apparatus and methods of producing a planar member from sections |
| CN116967530A (en) * | 2023-08-18 | 2023-10-31 | 青岛晓成金刚石工具有限公司 | Sandwich type diamond saw blade and production process thereof |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4106005A1 (en) * | 1991-02-26 | 1992-08-27 | Winter & Sohn Ernst | GRINDING OR CUTTING TOOL AND METHOD FOR THE PRODUCTION THEREOF |
| DE4244476A1 (en) * | 1992-12-30 | 1994-07-07 | Heinrich Mummenhoff | Master blade made of fiber-reinforced plastic for circular saw blades and / or cut-off wheels |
| DE29716043U1 (en) * | 1997-09-06 | 1997-12-18 | Schuler Technoplan GmbH & Co. KG, 75417 Mühlacker | Wood saw blade |
| DE19752815A1 (en) * | 1997-11-28 | 1999-06-02 | Siegfried Geisel | Cutting tool |
| EP1316379A1 (en) * | 2001-11-30 | 2003-06-04 | Turbolite AG | Rotary cutting blade |
| CN102211232B (en) * | 2011-05-19 | 2012-07-25 | 黑旋风锯业股份有限公司 | Production method of super-thin diamond frame saw blade matrix |
| DE102015109739B3 (en) * | 2015-06-18 | 2016-10-13 | Kohnle GmbH | Basic body for a saw blade and a saw blade |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1711016A (en) * | 1927-06-04 | 1929-04-30 | Dubois Lionel | Stone-sawing machine |
| JPS55106770A (en) * | 1979-02-01 | 1980-08-15 | Sanwa Daiyamondo Kogyo Kk | Rigid material or metal-cutting disc saw |
| JPS59169712A (en) * | 1983-03-14 | 1984-09-25 | Matsushita Electric Works Ltd | Round saw |
| DE8811470U1 (en) * | 1988-08-27 | 1988-11-17 | Ernst Winter & Sohn (Gmbh & Co), 2000 Hamburg | saw |
-
1989
- 1989-02-16 DE DE3904703A patent/DE3904703A1/en active Granted
-
1990
- 1990-01-30 FR FR9001079A patent/FR2645057A1/en not_active Withdrawn
- 1990-02-08 IT IT01930790A patent/IT1238043B/en active IP Right Grant
- 1990-02-16 CA CA002010229A patent/CA2010229A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865571A (en) * | 1997-06-17 | 1999-02-02 | Norton Company | Non-metallic body cutting tools |
| CN102950656A (en) * | 2012-10-17 | 2013-03-06 | 南光日 | Carbon saw blade and manufacture method thereof |
| WO2015138509A1 (en) * | 2014-03-11 | 2015-09-17 | Western Saw Manufacturers, Inc. | Apparatus and methods of producing a planar member from sections |
| US10967446B2 (en) | 2014-03-11 | 2021-04-06 | Baron Investments, Llc | Apparatus and methods of producing a planar member from planar sections |
| CN116967530A (en) * | 2023-08-18 | 2023-10-31 | 青岛晓成金刚石工具有限公司 | Sandwich type diamond saw blade and production process thereof |
| CN116967530B (en) * | 2023-08-18 | 2024-02-13 | 青岛晓成金刚石工具有限公司 | Sandwich type diamond saw blade and production process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| IT9019307A1 (en) | 1990-08-17 |
| DE3904703A1 (en) | 1990-08-23 |
| IT1238043B (en) | 1993-06-23 |
| DE3904703C2 (en) | 1991-07-18 |
| IT9019307A0 (en) | 1990-02-08 |
| FR2645057A1 (en) | 1990-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |