EP1855837A1 - Tungsten carbide tool - Google Patents
Tungsten carbide toolInfo
- Publication number
- EP1855837A1 EP1855837A1 EP06719841A EP06719841A EP1855837A1 EP 1855837 A1 EP1855837 A1 EP 1855837A1 EP 06719841 A EP06719841 A EP 06719841A EP 06719841 A EP06719841 A EP 06719841A EP 1855837 A1 EP1855837 A1 EP 1855837A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tungsten carbide
- paddle
- attachment
- piece
- communication
- 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.)
- Withdrawn
Links
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
- B23D73/00—Making files or rasps
- B23D73/04—Methods or machines for the manufacture of files or rasps
-
- 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
- B23D61/18—Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
-
- 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
- B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
-
- 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
- B23D71/00—Filing or rasping tools; Securing arrangements therefor
- B23D71/02—Filing or rasping tools; Securing arrangements therefor for filing or rasping machines or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/08—Grinders for cutting-off being portable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D99/00—Subject matter not provided for in other groups of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
- B28D1/127—Straight, i.e. flat, saw blades; strap saw blades
Definitions
- the present invention is a device that is designed to fit a reciprocating tool.
- Reciprocating tools are used to move an attachment to and fro.
- the standard reciprocating saw blade cannot cut objects that are very hard without the blade being dulled extremely quickly.
- standard reciprocating tool attachments cannot contort and return to a desired form easily.
- a circular blade with a diamond tip is used for cutting concrete, mortar, DUROC type material or even some of the harder plastics used in construction.
- the diamond tip blades are very expensive; circular saws cannot penetrate the concrete, mortar, DUROC type material or even some of the harder plastics used in construction deeply; circular saws are not notably maneuverable - they are intended for cutting in a straight line.
- a blade that is automated, and also capable of cutting concrete, mortarrDUROC type material or even some of the harder plastics used in construction, and also maneuverable.
- the present invention is a rasp made of Tungsten Carbide that is configured to fit onto a conventional reciprocating tool.
- Tungsten Carbide is an extremely hard, fine gray powder whose composition is WC. It is used in tools, dies, wear-resistant machine parts, and abrasives.
- the present invention is able to cut through some of the hardest material available to contractors, such as concrete, mortar, and hard plastics.
- An alternative embodiment of the present invention provides memory plastic as a base material as opposed to steel.
- the main body of the present invention fits into a reciprocating tool that has tungsten carbide or a similar substance that is sufficiently hard to be able to cut through a hard material; to have that substance housed on the attachment for the reciprocating tool.
- reciprocating tools are used with a saw insert wherein the insert has a blade on one end, or teeth, which will be moved to and fro, mimicking the manual motion done by a user with a standard saw.
- Figure 1 is an environmental view of the present invention.
- “F ⁇ g ⁇ re” 2 is also an environmental view of the present invention in an alternative embodiment.
- the first step is to make sure that the key 10 is continuous with the actual paddle 40 or material that will be the tool. It should be one continuous piece.
- the tungsten carbide 31 or similarly hard material is adhered to the paddle 40.
- 1095 steel is heated to 2000 degrees and the tungsten carbide at that temperature is braised to the key 10 - it is considered a paddle 40 when the key 10 is lengthened.
- the metal is annealed, making it very soft. "Annealing" a metal is to subject it to a process of heating and slow cooling in order to toughen the metal and reduce brittleness. Conventional methods are used to braise the tungsten carbide 31 or similarly hard substance to the paddle 40.
- the tungsten carbide 31 used in the present invention ranges from 24 grit (very rough) to 220 grit (very fine).
- the tool can be used to cut masonry block, tile, and concrete.
- Tungsten carbide grit applies to 1095 or 4140 steel alloy key 10. It is similar to the key used to insert into a conventional saw.
- the key 10 is lengthened to ten inches in length (although it can be any length).
- the key 10 is treated so that it is sufficiently hard to withstand the pressure when the device is used. This requires the key 10 be re-heated back up to a 44-48 RCH rockwell hardness (1600 degree area). If it's much above or below that range, then the key 10 will break or bend.
- the key 10 is then oil quenched. Oil quenching is done to do'o'HtJ as 'b
- the tungsten carbide 31 can be attached to paper strips 32 and then attached to the paddle 40 via hook and loop method 33.
- Figure 1 shows the preferable embodiment of the present invention. This method allows the sand paper to be thrown away. However, as it is attached to paper, the tungsten carbide does not last as long as when it is attached directly to the metal of the key 10.
- the tungsten carbide adheres to the paper via conventional technology.
- the strips of paper would be preferably via loop- type fasteners or any conventional technology.
- the loop-type fasteners are adhered to the paddle 10. In other words, one hook and loop-type fastening surface 33 is wrapped around and adhered to the paddle 40. A corresponding fastener is adhered to the paper * 32 via conventional means.
- the key 10 is the segment that attaches to the reciprocating tool; bare steel 20 and tungsten carbide 31 on removable paper strips 32 comprise the paddle 40.
- the benefit of this embodiment is as the tungsten carbide 31 is gradually worn down from use, rather than buying a new key 10 and paddle 40 with tungsten carbide 31, all the user would have to do is buy a replacement tungsten carbide 31 paper 32 with hook and loop fasteners 33.
- the paddle 41 is made of bare steel 21 and tungsten carbide 31, which is not removable from the paddle 41.
- Tungsten Carbide grits will cut ready mix, which is one of the hardest substances that a contractor might desire to cut.
- the heating temperature (as noted above) will vary so that as the grit size increases, the temperature requirement must go up to achieve the correct consistency and hardness. Because there are certain stress areas coming into contact with surfaces, the present invention is super-hardened so that it won't snap or break.
- the paddle 40 / 41 could be memory plastic so that it is malleable for working with any surface that requires a non-planar surface to interact with it.
- memory plastic would form the paddle and be melted to form around the key 10 to make one continuous piece.
- the Tungsten carbide 31 can also be glued directly to memory plastic. It is anticipated that this embodiment would not be able to withstand the pressures as the other embodiment.
- the nature of memory plastic is that it can be bent and return to its original form as opposed to a steel key which is not as flexible.
- a final embodiment is the memory plastic paddle 41 with hook and loop type fasteners, with the Tungsten carbide on the paper that mates with the hook and loop fastener.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64770505P | 2005-01-27 | 2005-01-27 | |
PCT/US2006/003162 WO2006081538A1 (en) | 2005-01-27 | 2006-01-27 | Tungsten carbide tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1855837A1 true EP1855837A1 (en) | 2007-11-21 |
EP1855837A4 EP1855837A4 (en) | 2009-04-08 |
Family
ID=36740861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06719841A Withdrawn EP1855837A4 (en) | 2005-01-27 | 2006-01-27 | Tungsten carbide tool |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1855837A4 (en) |
CA (1) | CA2598661A1 (en) |
WO (1) | WO2006081538A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB840784A (en) * | 1958-01-08 | 1960-07-13 | C D Monninger Ltd | Improvements in or relating to saw blades |
GB2009670A (en) * | 1977-11-11 | 1979-06-20 | Hurtado J | A Sawing Process and a Saw Blade for Carrying Same Out |
US4345499A (en) * | 1979-05-10 | 1982-08-24 | Ross Frank L | Method for the production of sawblades, especially jigsaw or sabresaw blades |
US4574673A (en) * | 1985-03-25 | 1986-03-11 | Pearl David R | Stiffened cutting blade with reversible replaceable edge member |
EP0337685A2 (en) * | 1988-04-12 | 1989-10-18 | C4 Carbides (International) Limited | Cutting means |
EP0361876A2 (en) * | 1988-09-27 | 1990-04-04 | Black & Decker Inc. | Improvements in or relating to saws and saw teeth and blades therefor |
US5193280A (en) * | 1991-02-25 | 1993-03-16 | Black & Decker, Inc. | Saw blades and method of making same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK0563585T3 (en) * | 1992-04-01 | 1995-12-18 | Integral Medizintechnik | Plastic bone asparagus |
US5342365A (en) * | 1993-07-19 | 1994-08-30 | Padgett Instruments, Inc. | Surgical rasp |
AR007698A1 (en) * | 1996-08-28 | 1999-11-10 | Deere & Co | METHOD TO CONTRIBUTE SURFACE HARDNESS TO A METALLIC SURFACE AND A MUD PREPARED BY SUCH METHOD |
-
2006
- 2006-01-27 CA CA002598661A patent/CA2598661A1/en not_active Abandoned
- 2006-01-27 EP EP06719841A patent/EP1855837A4/en not_active Withdrawn
- 2006-01-27 WO PCT/US2006/003162 patent/WO2006081538A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB840784A (en) * | 1958-01-08 | 1960-07-13 | C D Monninger Ltd | Improvements in or relating to saw blades |
GB2009670A (en) * | 1977-11-11 | 1979-06-20 | Hurtado J | A Sawing Process and a Saw Blade for Carrying Same Out |
US4345499A (en) * | 1979-05-10 | 1982-08-24 | Ross Frank L | Method for the production of sawblades, especially jigsaw or sabresaw blades |
US4574673A (en) * | 1985-03-25 | 1986-03-11 | Pearl David R | Stiffened cutting blade with reversible replaceable edge member |
EP0337685A2 (en) * | 1988-04-12 | 1989-10-18 | C4 Carbides (International) Limited | Cutting means |
EP0361876A2 (en) * | 1988-09-27 | 1990-04-04 | Black & Decker Inc. | Improvements in or relating to saws and saw teeth and blades therefor |
US5193280A (en) * | 1991-02-25 | 1993-03-16 | Black & Decker, Inc. | Saw blades and method of making same |
Non-Patent Citations (1)
Title |
---|
See also references of WO2006081538A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2598661A1 (en) | 2006-08-03 |
EP1855837A4 (en) | 2009-04-08 |
WO2006081538A1 (en) | 2006-08-03 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070824 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20090309 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B24B 7/00 20060101AFI20060808BHEP Ipc: B23D 61/12 20060101ALI20090303BHEP Ipc: B24B 5/00 20060101ALI20090303BHEP Ipc: B24B 9/00 20060101ALI20090303BHEP Ipc: B23D 71/02 20060101ALI20090303BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090609 |