EP1414623A1 - Flat chisel - Google Patents
Flat chiselInfo
- Publication number
- EP1414623A1 EP1414623A1 EP02764619A EP02764619A EP1414623A1 EP 1414623 A1 EP1414623 A1 EP 1414623A1 EP 02764619 A EP02764619 A EP 02764619A EP 02764619 A EP02764619 A EP 02764619A EP 1414623 A1 EP1414623 A1 EP 1414623A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chisel
- cutting edge
- flat
- cutting
- flat chisel
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
Definitions
- the invention relates to a flat chisel according to the preamble of claim 1.
- Flat chisels of this type are used in the processing of rock, in particular masonry rock, in order, for example, to produce openings, channels and slots.
- Flat chisels are known from the prior art, the main cutting edge of which is arranged transversely to a longitudinal axis of the chisel.
- a disadvantage of such chisels is that they tend to jam in the material, in particular during processing in which the chisel with the chisel head penetrates deeper into the rock. The jamming in the material takes place in particular on the side surfaces of the bit head oriented approximately perpendicular to the cutting edge of the bit.
- the invention has for its object to develop a flat chisel that has a low tendency to jam in the rock to be processed.
- the flat chisel according to the invention has at least one side surface designed as a side cutting edge.
- the side surface designed as a side cutting edge enables the chisel to process the material located in the region of the side surface. This processing prevents jamming of the chisel head in the rock in the area of the side surface, since the side surface designed as a side cutting edge brings the material to be processed into shape. Material that brakes the chisel head in the area of the side surface is shredded as soon as the chisel penetrates and cleared out of the way.
- a flat chisel is to be understood as a chisel with an elongated cutting edge that runs essentially perpendicular to a longitudinal axis of the chisel or transversely to a direction of impact.
- the subject of the invention passes at least one side cutting edge into the main cutting edge. This avoids a cutting-free area where the chisel can become jammed with the material to be processed.
- the cutting edges also stabilize each other.
- An advantageous embodiment of the subject matter of the invention provides for the cutting edges of the main cutting edge and the side cutting edge to be arranged in a common plane. As a result, a transverse load on the cutting edges or cutting edges when the flat chisel penetrates or is pulled out of the material is largely avoided.
- the flat chisel is suitable for a wide variety of applications and angles.
- a ramp-shaped configuration of the main cutting edge and / or side cutting edge it is possible to to realize particularly pointed cutting edges, which promote vertical penetration into the material to be processed.
- cutting edges designed in this way allow the chisel to be placed particularly flat against the material to be processed.
- FIG. 1 shows a side view of a chisel
- FIG. 2 shows a partial view of a second chisel
- FIG. 3 shows a top view of the chisel shown in FIG. 2,
- FIG. 4 shows a side view from the right of the chisel shown in FIG. 2,
- Figure 5 is a plan view of the chisel and shown in Figure 4
- Figure 6 is a side view of a ramp-shaped cutting edge.
- a chisel 1 which is designed as a flat chisel 2 and essentially consists of a chisel head 3, a chisel shank 4 and a clamping shank 5 or insertion end.
- the clamping shaft 5 it is a so-called SDS-Plus clamping shank 6, which is used for coupling to power-driven rotary and chisel hammers.
- Such chisels are also referred to as insert chisels.
- a main cutting edge 7 is arranged on the chisel head 3 perpendicular to a longitudinal axis x of the chisel and merges into a front striking surface 10 and a rear striking surface 11 via a front cutting surface 8 and a rear cutting surface 9.
- Side surfaces 12, 13 of the chisel head 3 are designed as side cutting edges 14, 15, which merge into the striking surfaces 10, 11 via cutting surfaces 16. Cutting edges 17, 18 of the side cutting edges 14, 15 run approximately parallel to the central longitudinal axis x of the flat chisel 2. In a transition region 19, the chisel head 3 merges into the chisel shank 4.
- FIG. 2 shows a partial view of a second chisel 1 or second flat chisel 2, of which only one chisel head 3 and part of the chisel shaft 4 are shown.
- a main cutting edge 7 with cutting surfaces 8, 9 and a cutting edge 20 are assigned two side cutting edges 14, 15 which have cutting surfaces 16. These widen in the direction of a clamping shank, not shown.
- Cutting edges 17, 18 of the side cutting edges 14, 15 run approximately at a right angle to the cutting edge 20 of the main cutting edge 7.
- a front striking surface 10, into which the cutting surfaces 8 and 16 merge, extends in a transition region 19 to the chisel shank 4.
- the main cutting edge 7 goes at separating edges 21 in the side cutting edges 14, 15.
- FIG. 3 shows a plan view of the flat chisel 2 shown in FIG. 2.
- the cutting surfaces 8, 9 can be seen here, which converge in the main cutting edge 20.
- the main cutting edge 20 and the side cutting edges 14, 15 run in a common plane E, which is perpendicular to the plane of the drawing.
- FIG. 4 shows a side view from the right of the flat chisel 2 shown in FIG. 2.
- the main cutting edge 7 forms a gable 22 seen from the side or in cross section, the gable surfaces 23 of which are formed by the cutting surfaces 8, 9.
- FIG. 5 shows a top view of the flat chisel 2 shown in FIG. 4.
- the side cutters 14, 15 also form gables 22 with their cutting surfaces 16 in cross section or viewed from the side, the cutting surfaces 16 likewise forming gable surfaces 23.
- FIG. 6 shows a main cutting edge 7 of a flat chisel 2, which is not shown in detail.
- the main cutting edge 7 is designed in cross section or seen from the side as a ramp 24 and has a cutting surface 9 running parallel to a longitudinal axis x of the chisel and a side surface 8 running obliquely to this.
- the invention is not restricted to the exemplary embodiments shown or described. Rather, it encompasses further developments of the invention within the scope of the property right claims.
- the cutting edges of the side cutting edges are arranged at an angle to the cutting edge of the main cutting edge that deviates from 90 °.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10133946 | 2001-07-17 | ||
DE10133946A DE10133946B4 (en) | 2001-07-17 | 2001-07-17 | flat chisel |
PCT/EP2002/007336 WO2003008155A1 (en) | 2001-07-17 | 2002-07-03 | Flat chisel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1414623A1 true EP1414623A1 (en) | 2004-05-06 |
EP1414623B1 EP1414623B1 (en) | 2011-10-05 |
Family
ID=7691568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02764619A Expired - Lifetime EP1414623B1 (en) | 2001-07-17 | 2002-07-03 | Flat chisel |
Country Status (4)
Country | Link |
---|---|
US (1) | US7363922B2 (en) |
EP (1) | EP1414623B1 (en) |
DE (1) | DE10133946B4 (en) |
WO (1) | WO2003008155A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0520911D0 (en) * | 2005-10-14 | 2005-11-23 | C4 Carbides Plc | Power tool attachments |
EP2502710B1 (en) | 2011-03-22 | 2020-04-22 | Black & Decker Inc. | Chisels |
US8769827B2 (en) | 2011-04-11 | 2014-07-08 | Stanley Black & Decker, Inc. | Chisel blade with sides configured for cutting |
US9333564B2 (en) | 2013-03-15 | 2016-05-10 | Black & Decker Inc. | Drill bit |
USD734792S1 (en) | 2013-03-15 | 2015-07-21 | Black & Decker Inc. | Drill bit |
USD737875S1 (en) | 2013-03-15 | 2015-09-01 | Black & Decker Inc. | Drill bit |
USD789994S1 (en) * | 2015-08-05 | 2017-06-20 | Nordco Inc. | Tamper tool |
USD856774S1 (en) * | 2017-07-31 | 2019-08-20 | Thomas N. Kuperus | Axe bar |
USD923447S1 (en) * | 2019-05-06 | 2021-06-29 | Milwaukee Electric Tool Corporation | Chisel |
USD922842S1 (en) * | 2019-05-06 | 2021-06-22 | Milwaukee Electric Tool Corporation | Chisel |
USD922841S1 (en) * | 2019-05-06 | 2021-06-22 | Milwaukee Electric Tool Corporation | Chisel |
USD921465S1 (en) * | 2019-05-06 | 2021-06-08 | Milwaukee Electric Tool Corporation | Mortar knife |
USD922840S1 (en) * | 2019-05-06 | 2021-06-22 | Milwaukee Electric Tool Corporation | Chisel |
JP6715422B1 (en) * | 2019-07-30 | 2020-07-01 | 株式会社光岡組 | Hammer with a chisel |
USD1016590S1 (en) * | 2022-08-29 | 2024-03-05 | Yan Feng | Micro air chipping tool scraper |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735179A (en) * | 1956-02-21 | stanton | ||
US1350241A (en) * | 1919-06-09 | 1920-08-17 | William T Routh | Cold-chisel |
US1452037A (en) * | 1920-09-15 | 1923-04-17 | Wiliam J Gleasner | Asphalt-cutting tool |
US1742726A (en) * | 1928-05-31 | 1930-01-07 | Pfister John Rudolf | Impregnator chisel for wood |
GB606543A (en) * | 1946-02-13 | 1948-08-16 | Frederick Leslie Ballard | Improvements in chisels for sculptors, stonemasons and others working in stone |
GB634743A (en) * | 1947-07-28 | 1950-03-29 | Murex Ltd | Improvements in and relating to drills |
GB934309A (en) | 1961-12-02 | 1963-08-14 | Ward & Payne Ltd | Improvements in or relating to joiners' chisels and gouges |
US4089562A (en) * | 1977-04-27 | 1978-05-16 | Baumeister Frederick F | Cutter for asphalt paving |
FR2431351A1 (en) | 1978-07-17 | 1980-02-15 | Brunon Louis | Broad blade woodworking chisel - has integral handle with flat end for hammering, and mono-bevelled cutting edge and sides |
DE8117222U1 (en) * | 1981-06-11 | 1982-12-30 | Schmitz, Paul, 5630 Remscheid | "UNIVERSAL DRILL" |
DE8225658U1 (en) * | 1982-09-11 | 1984-02-23 | Robert Bosch Gmbh, 7000 Stuttgart | CHISEL |
DE8320045U1 (en) * | 1983-07-12 | 1983-11-17 | Wengeler & Kalthoff Hammerwerke GmbH & Co KG, 4320 Hattingen | STEEL SPADE FOR BLOW HAMMER |
DE9100999U1 (en) * | 1991-01-29 | 1991-04-18 | Albert Berner GmbH & Co KG, 7118 Künzelsau | Chisel |
JPH05318987A (en) * | 1992-05-25 | 1993-12-03 | Union Seiki:Kk | Chisel |
DE19757271A1 (en) * | 1997-12-22 | 1999-06-24 | Hilti Ag | Tool |
-
2001
- 2001-07-17 DE DE10133946A patent/DE10133946B4/en not_active Expired - Lifetime
-
2002
- 2002-07-03 WO PCT/EP2002/007336 patent/WO2003008155A1/en active Application Filing
- 2002-07-03 EP EP02764619A patent/EP1414623B1/en not_active Expired - Lifetime
- 2002-07-03 US US10/381,340 patent/US7363922B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03008155A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003008155A1 (en) | 2003-01-30 |
DE10133946A1 (en) | 2003-02-06 |
EP1414623B1 (en) | 2011-10-05 |
DE10133946B4 (en) | 2011-01-20 |
US20040010921A1 (en) | 2004-01-22 |
US7363922B2 (en) | 2008-04-29 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ARESI S.P.A. Owner name: ROBERT BOSCH GMBH |
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Inventor name: MONZANI, STEFANO Inventor name: KOLJAKA, FRANC Inventor name: LANG, MARCO |
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