EP1247617A1 - Disk for grinding concrete - Google Patents
Disk for grinding concrete Download PDFInfo
- Publication number
- EP1247617A1 EP1247617A1 EP01500088A EP01500088A EP1247617A1 EP 1247617 A1 EP1247617 A1 EP 1247617A1 EP 01500088 A EP01500088 A EP 01500088A EP 01500088 A EP01500088 A EP 01500088A EP 1247617 A1 EP1247617 A1 EP 1247617A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disk
- disks
- concrete
- arms
- grinding
- 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- Withdrawn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
Images
Classifications
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/047—Grinding heads for working on plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
Definitions
- This invention refers to a disk for grinding concrete, specially designed to be applied to a concrete grinder, and more specifically, to allow the use of this type of disks on grinders with two propeller-shaped bases.
- the application of this invention is in the construction area, especially in obtaining concrete floors with a perfect surface finish.
- a use of grinding disks is also known where, once the grinder has first been used with the disks, said disks are detached and the propeller-shaped bases alone are used, which helps give the concrete a better surface finish.
- the grinding disks that are currently on the market are circular in shape, so that they can only be used on grinders with a single head, as on machines that have two heads these would interfere with each other since the disks have to work on the same plane, making normal operation of the machine impossible.
- the disk that the invention proposes resolves the aforementioned problem in a fully satisfactory manner, so that, while performing satisfactorily as a grinding element, it can be used on grinders with either one or two heads.
- the disk that the invention proposes starting with an imaginary circle, has four ample indentations, equiangularly distributed and curved-concave, which convert it into a type of "cross,” with equal arms, in the shape of an isosceles trapezoid with slanting, curved-concave sides, so that the curvature and radius of these indentations roughly coincides with the radius of the disk itself, which, by means of proper angular offsetting between the two disks mounted on a grinder with two heads, prevents said disks from touching each other, as each arm of one of them fits into the respective indentation of the other, and vice-versa.
- the disk proposed by the invention is shaped like a cross, so that the ends (1) of its arms, equiangularly distributed, form a curved-concave shape, thus forming part of an imaginary circumferential line, coinciding with the theoretical diameter of the disk and, consequently, with the diameter of the grinder's propeller-shaped base; these arms are in the shape of an isosceles trapezoid, and their side edges (2) are curved-concave and are joined with no break in continuity between adjoining arms, forming ample indentations in the form of a circumferential arc.
- the radius of these indentations (3) appreciably coincides with the radius of the disk itself, the one generated by the curved ends (1) of its arms, so that in the case of a grinder with two heads, the arms on one of their disks are offset by 45° with respect to the arms on the other, the same as with the arms of the propeller-shaped bases themselves, so that in the area where the disks converge, each arm (1) corresponding to one of them fits into the indentation (3) of the other, and vice-versa.
- This special disk shape not only allows it to be used on concrete grinders with two heads, but also, both in this type of grinders and in grinders with a single head, results in better performance, as no concrete "burrs" are formed on the outer part of the disk. In addition, they are able to lie flatter on the concrete, avoiding the tendency of the machine to sink in when used with circular disks.
- the disk will incorporate the typical pairs of ribs (4) on its upper face, aligned with each one of its arms, between which there are pins (5) to secure it to the grinder's propeller-shaped base, with the aid of corresponding hooks, which are not shown in the drawings.
Abstract
Description
Claims (1)
- Disk for grinding concrete, of the type intended for use on the grinding propeller-shaped bases of a concrete grinder, characterized by the fact that it has an outline roughly in the shape of a cross, in which four equal arms are defined, equiangularly distributed, whose ends (1) form part of an imaginary circumferential line, corresponding to the theoretical diameter of the disk, while their side edges (2) are curved-concave, and the side edges of adjoining arms are joined without a break in continuity, defining between them an ample concave indentation, whose path is a circumferential arc, and whose radius appreciably coincides with the theoretical radius of the disk, so that a pair of disks may be attached to a machine equipped with two heads or propeller-shaped bases, with said disks angularly offset by 45° with respect to each other, so that in their arrangement on the same plan and in working position, each arm (1) of a disk fits into a curved-concave indentation (3) of the other one, and vice-versa, without touching each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01500088A EP1247617A1 (en) | 2001-04-02 | 2001-04-02 | Disk for grinding concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01500088A EP1247617A1 (en) | 2001-04-02 | 2001-04-02 | Disk for grinding concrete |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1247617A1 true EP1247617A1 (en) | 2002-10-09 |
Family
ID=8183472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01500088A Withdrawn EP1247617A1 (en) | 2001-04-02 | 2001-04-02 | Disk for grinding concrete |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1247617A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6719620B1 (en) | 2002-11-01 | 2004-04-13 | A. Richard, S.E.N.C. | Sanding tool |
US6739963B1 (en) | 2002-12-20 | 2004-05-25 | Promociones Crevimas, S.L. | Disk for grinding concrete |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE587272C (en) * | 1932-06-14 | 1933-11-01 | Jean Baptiste Zambon | Device for polishing marble or the like. |
EP0353997A2 (en) * | 1988-08-03 | 1990-02-07 | B A Power Tools Ltd. | Grinding machine |
US5762545A (en) * | 1997-02-07 | 1998-06-09 | Edwards; Kerri O. | Sanding disk with extended blades |
-
2001
- 2001-04-02 EP EP01500088A patent/EP1247617A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE587272C (en) * | 1932-06-14 | 1933-11-01 | Jean Baptiste Zambon | Device for polishing marble or the like. |
EP0353997A2 (en) * | 1988-08-03 | 1990-02-07 | B A Power Tools Ltd. | Grinding machine |
US5762545A (en) * | 1997-02-07 | 1998-06-09 | Edwards; Kerri O. | Sanding disk with extended blades |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6719620B1 (en) | 2002-11-01 | 2004-04-13 | A. Richard, S.E.N.C. | Sanding tool |
US6739963B1 (en) | 2002-12-20 | 2004-05-25 | Promociones Crevimas, S.L. | Disk for grinding concrete |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20021128 |
|
AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
17Q | First examination report despatched |
Effective date: 20081204 |
|
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: 20090415 |