CA2749810C - Profiled key with local recess - Google Patents
Profiled key with local recess Download PDFInfo
- Publication number
- CA2749810C CA2749810C CA2749810A CA2749810A CA2749810C CA 2749810 C CA2749810 C CA 2749810C CA 2749810 A CA2749810 A CA 2749810A CA 2749810 A CA2749810 A CA 2749810A CA 2749810 C CA2749810 C CA 2749810C
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- CA
- Canada
- Prior art keywords
- key
- profile groove
- key blade
- recess
- 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.)
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- 230000000903 blocking effect Effects 0.000 abstract description 42
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 description 4
- 229910052729 chemical element Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0042—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with additional key identifying function, e.g. with use of additional key operated rotor-blocking elements, not of split pin tumbler type
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
- E05B19/0017—Key profiles
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0078—Asymmetrical tumbler pins, e.g. with a key operating on a radial protrusion of a tumbler pin
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
- E05B19/0017—Key profiles
- E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
- E05B19/0052—Rectangular flat keys
Landscapes
- Lock And Its Accessories (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A profiled key for use in an associated cylinder lock provided with a rotatable key plug having a longitudinal keyway.
The key has a substantially flat key blade with a longitudinally extending profile groove at a side surface thereof and at least one local recess adjacent to said profile groove. The local recess constitutes a locally expanded portion of said profile groove, and the locally expanded portion of the pro- file groove has a cross-section with two opposite, non-symmetrical side walls. The local reces will accommodate a blocking element in the lock, and permit full insertion of the key blade into the keyway.
The key has a substantially flat key blade with a longitudinally extending profile groove at a side surface thereof and at least one local recess adjacent to said profile groove. The local recess constitutes a locally expanded portion of said profile groove, and the locally expanded portion of the pro- file groove has a cross-section with two opposite, non-symmetrical side walls. The local reces will accommodate a blocking element in the lock, and permit full insertion of the key blade into the keyway.
Description
Profiled key with local recess FIELD AND BACKGROUND OF THE INVENTION
The present invention relates to a key for use in an associ-ated cylinder provided with a rotatable key plug having a lon-gitudinal keyway. The key blade has a substantially flat key blade and a longitudinally extending profile groove. The key is especially adapted for use in a lock having a blocking ele-ment, which is movable elevationally so as to prevent the in-sertion of an incorrectly cut key blade into the keyway.
The key of the present invention is part of an inventive con-cept of a lock and key combination, which is the subject of a separate patent application being filed in parallel with the present application.
The contents of the parallel application mentioned above are incorporated in this disclosure by reference.
Similar lock and key combinations are generally known, e.g.
from the US patent 5715717 (Widen). The profile groove or grooves in the key will provide great possibilities to vary the cross-sectional profile of the key, which is a great ad-vantage.
OBJECT OF THE INVENTION
The object of the present invention is to provide a key, co-operating with a blocking mechanism in the lock and providing an increased number of profile varieties.
SUMMARY OF THE INVENTION
According to the present invention, this object is achieved by providing a key having a substantially flat key blade and be-ing characterized in that said substantially flat key blade has a longitudinally extending profile groove at at least one side surface thereof, said profile groove is provided with an inner, longitudinally straight portion corresponding to the outermost portion of a profile rib in said longitudinal key way of the key plug, said substantially flat key blade also has at least one local recess adjacent to said profile groove, said at least one local recess constitutes a locally expanded portion of said profile groove, and said locally expanded por-tion of the profile groove has a cross-section with two oppo-site, non-symmetrical side walls, which extend in the longitudinal direction of the key blade As will be explained below, the locally expanded portion of the profile groove will accommodate a blocking element ar-ranged in the associated lock, upon moving the blocking ele-ment from an initial position to a second position enabling full insertion of the key blade into the lock. In case a dif-ferently cut key blade is inserted, i.e. a key blade without a local recess adjacent to the profile groove, the blocking ele-ment of the lock will stop the key blade from being fully in-serted into the keyway.
The key may be configured in various ways, in accordance with the dependent claims and as explained further below with refe-rence to the appended drawings.
SHORT DESCRIPTION OF THE DRAWINGS
Figure la shows, in a side view, a cylinder lock, with a key blade inserted therein;
Figure lb shows the cylinder lock and key combination of fig.
la in a perspective view;
The present invention relates to a key for use in an associ-ated cylinder provided with a rotatable key plug having a lon-gitudinal keyway. The key blade has a substantially flat key blade and a longitudinally extending profile groove. The key is especially adapted for use in a lock having a blocking ele-ment, which is movable elevationally so as to prevent the in-sertion of an incorrectly cut key blade into the keyway.
The key of the present invention is part of an inventive con-cept of a lock and key combination, which is the subject of a separate patent application being filed in parallel with the present application.
The contents of the parallel application mentioned above are incorporated in this disclosure by reference.
Similar lock and key combinations are generally known, e.g.
from the US patent 5715717 (Widen). The profile groove or grooves in the key will provide great possibilities to vary the cross-sectional profile of the key, which is a great ad-vantage.
OBJECT OF THE INVENTION
The object of the present invention is to provide a key, co-operating with a blocking mechanism in the lock and providing an increased number of profile varieties.
SUMMARY OF THE INVENTION
According to the present invention, this object is achieved by providing a key having a substantially flat key blade and be-ing characterized in that said substantially flat key blade has a longitudinally extending profile groove at at least one side surface thereof, said profile groove is provided with an inner, longitudinally straight portion corresponding to the outermost portion of a profile rib in said longitudinal key way of the key plug, said substantially flat key blade also has at least one local recess adjacent to said profile groove, said at least one local recess constitutes a locally expanded portion of said profile groove, and said locally expanded por-tion of the profile groove has a cross-section with two oppo-site, non-symmetrical side walls, which extend in the longitudinal direction of the key blade As will be explained below, the locally expanded portion of the profile groove will accommodate a blocking element ar-ranged in the associated lock, upon moving the blocking ele-ment from an initial position to a second position enabling full insertion of the key blade into the lock. In case a dif-ferently cut key blade is inserted, i.e. a key blade without a local recess adjacent to the profile groove, the blocking ele-ment of the lock will stop the key blade from being fully in-serted into the keyway.
The key may be configured in various ways, in accordance with the dependent claims and as explained further below with refe-rence to the appended drawings.
SHORT DESCRIPTION OF THE DRAWINGS
Figure la shows, in a side view, a cylinder lock, with a key blade inserted therein;
Figure lb shows the cylinder lock and key combination of fig.
la in a perspective view;
Figure 1c shows the lock and key combination of fig. la in a perspective, exploded view, illustrating a locking mechanism above the keyway of the lock and the key blade according to the invention;
Figure 1d shows a cross-section along the line Id-Id in figure 1a also illustrating a blocking element arranged in the key plug of the lock;
Figure le shows a cross-section as in fig. 1d, but without a key;
Figure if shows a cross-section along the line 1f-1f in figure 1a;
Figures 2a, 2b show schematically in perspective views how the key blade interacts with the blocking element of the lock (fig. 2b at a larger scale);
Figures 3a and 3b show the key blade of figures 2a, 2b in a side view (fig. 2b at a larger scale);
Figure 4 shows, in a side view, a key blade and a blocking element located close to the entrance of the keyway;
Figure 5 and 6 show the blocking element and the key blade of fig. 4 in a cross-sectional view and an end view, respec-tively.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
In figures 1a, 1b, lc, 1d, 1e, if there is shown a cylinder lock and key combination having conventional upper and lower tumbler pins 1, 2 in a linear row (fig. lc) cooperating with an upper edge of the inserted key blade, the upper edge having a corresponding number of recess cuts 11, 12, 13, 14, 15, 16 at various levels. Deep inside the keyway of the lock, not very far from the tip of the inserted key blade, there is a blocking element 20, which is movable elevationally (up and down) at the side of the keyway.
The blocking element, and its interaction with the inserted key blade, will be better understood from figure 1d. Here, the cylindrical housing of the lock is denoted 30, having an up-right housing part 31 accomodating the upper locking pins 1,2 mentioned above and a cylindrical bore 32, in which a cylind-rical key plug 33 is rotatably journalled.
The key plug 33 has a central keyway 50 extending longitudi-nally along the axis of the cylindrical bore 32 and a central plane A extending through the cylindrical axis and the upper housing portion 31. In a longitudinal row in this plane A, there are a number of cylindrical holes (not visible in fig.
1d) each accommodating one of the lower locking pins 2. In figures 1d and le, the profile of the keyway 50 and the corresponding key blade 60 are clearly visible. The keyway 50 is oriented along the central plane A. It has a lower, rather wide portion 50a, and an upper, relatively narrow portion 50b.
The upper and lower portions of the keyway have side walls 50c and 50d lying in a common plane in parallel to the central plane A (to the right thereof in figure 3). At the other lateral side, the upper keyway portion 50b has a side wall 50e, whereas the lower part of the keyway has a side wall 50f, the latter being located further away from the central plane A
than the upper side wall 50e.
On the right hand side of the keyway, there is a longitudinal, profiled rib 51 extending along the key plug. The profile rib 51 has a base portion 52 (concealed by the blocking element 20 in fig. 1d) and an end portion 53 provided with a downwardly 5 directed tongue 54.
On the left hand side, the keyway has two longitudinal ribs 55 and 56 at the lower portion of the keyway.
The key blade 60 (see fig. 1d), according to the present invention, has a profile shape which is substantially supplementary to the keyway 50. Accordingly, the key 60 has a lower base portion 60a, which is relatively wide, and an upper portion 60b, which is relatively narrow.
At the right hand side (as seen in figure 1d) the key blade has a longitudinally extending groove 61 with an outer portion 62, and an inner, undercut portion 63. The profile groove 61 has an inner wall 64 and an opposite side wall 65, which is inclined and faces the bottom wall 64 and also forms the in-side wall of a ridge 66 extending along the key blade 60.
As will be evident from figure 1d, the profile groove 61 acco-modates the longitudinally extending profile rib 51, including the downwardly directed tongue 54 in the undercut portion of the groove 61.
On the left hand side, the key blade 60 has two longitudinal grooves 67 and 68 corresponding to the profile ribs 55, 56.
As appears from figure if, the outer portion 62 of the profile groove 61, and the corresponding base portion 52 of the pro-file rib 51 has a slanted upper wall 69 and a slanted surface 59, respectively.
Now, since the sectional profile of the key blade 60 corre-sponds to the cross-sectional profile of the keyway 50, the key blade 60 can be inserted partially or fully into the key-way, as is known in the art. Of course, only key blades being cut with the particular profile of the keyway may be fully in-serted into the keyway.
In order to allow for further variations of the exact profile of the keyway, there is provided, according to the present in-vention, a blocking element 20 (as mentioned above) which can be regarded as a movable profile portion.
Generally, the blocking element has a profile section, which corresponds to the longitudinally extending groove 61 in the key blade. However, in the region of the outer portion 62 of the groove 61, it is somewhat larger, in a direction parallel to the central plane A. So, it does not fit into the profile groove of the keyway along the full length thereof.
However, according to the present invention, the key blade 60 is provided with a local recess 70 which constitutes a locally expanded portion of the profile groove 61 and is wide enough to accommodate the uppermost portion of the blocking element 20, as will be explained more fully below.
In order to secure a well-defined mobility of the blocking element 20, it is integrated with or firmly connected to a body 23, which is guided for elevational movement in parallel to the central plane A of the key way in a substantially cy-lindrical cavity 24 at the side of the keyway, in parallel to the central plane A. Thus, the body 23 is guided for movement up and down in the cylindrical cavity 24, so that the integ-rated or connected blocking element 20 is also movable up and down.
The blocking element 20 may protrude partially or fully into the profile groove 61, in a cut-out portion of the profile rib. 51.
The interaction between the blocking element and the key blade is illustrated in figures 2a, 2b, 3a, 3b. Initially, when the keyway 50 is empty (see fig. le), the blocking element 20 will be positioned in its lowermost position, because of the action of a compression spring 26 in the cavity 24 (figure 1d). In the embodiment of figures 2a, 2b, 3a, 3b, the profile groove 61 of the key blade 60 has no undercut portion, but this will not make any difference to the interaction between the key blade and the blocking element 20.
When the key blade 60 is inserted into the keyway 50, a lower, first portion 21 of the blocking element 20 will make contact with a ramp surface 75 near the tip end of the key blade. By way of this contact, the blocking element 20 will move upwards and take the position shown in figures 1d and 2b. Here, the upper, second portion 22 of the blocking element 20 will be accommodated in the above-mentioned recess 70, which is lo-cally cut out in this particular part of the keyblade, so the width of the profile groove is effectively widened in this re-gion.
Without such a recess 70, the blocking element would be jammed between the ramp surface 75 and the upper, slanted wall 69 of the longitudinal profile groove.
Figure 1d shows a cross-section along the line Id-Id in figure 1a also illustrating a blocking element arranged in the key plug of the lock;
Figure le shows a cross-section as in fig. 1d, but without a key;
Figure if shows a cross-section along the line 1f-1f in figure 1a;
Figures 2a, 2b show schematically in perspective views how the key blade interacts with the blocking element of the lock (fig. 2b at a larger scale);
Figures 3a and 3b show the key blade of figures 2a, 2b in a side view (fig. 2b at a larger scale);
Figure 4 shows, in a side view, a key blade and a blocking element located close to the entrance of the keyway;
Figure 5 and 6 show the blocking element and the key blade of fig. 4 in a cross-sectional view and an end view, respec-tively.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
In figures 1a, 1b, lc, 1d, 1e, if there is shown a cylinder lock and key combination having conventional upper and lower tumbler pins 1, 2 in a linear row (fig. lc) cooperating with an upper edge of the inserted key blade, the upper edge having a corresponding number of recess cuts 11, 12, 13, 14, 15, 16 at various levels. Deep inside the keyway of the lock, not very far from the tip of the inserted key blade, there is a blocking element 20, which is movable elevationally (up and down) at the side of the keyway.
The blocking element, and its interaction with the inserted key blade, will be better understood from figure 1d. Here, the cylindrical housing of the lock is denoted 30, having an up-right housing part 31 accomodating the upper locking pins 1,2 mentioned above and a cylindrical bore 32, in which a cylind-rical key plug 33 is rotatably journalled.
The key plug 33 has a central keyway 50 extending longitudi-nally along the axis of the cylindrical bore 32 and a central plane A extending through the cylindrical axis and the upper housing portion 31. In a longitudinal row in this plane A, there are a number of cylindrical holes (not visible in fig.
1d) each accommodating one of the lower locking pins 2. In figures 1d and le, the profile of the keyway 50 and the corresponding key blade 60 are clearly visible. The keyway 50 is oriented along the central plane A. It has a lower, rather wide portion 50a, and an upper, relatively narrow portion 50b.
The upper and lower portions of the keyway have side walls 50c and 50d lying in a common plane in parallel to the central plane A (to the right thereof in figure 3). At the other lateral side, the upper keyway portion 50b has a side wall 50e, whereas the lower part of the keyway has a side wall 50f, the latter being located further away from the central plane A
than the upper side wall 50e.
On the right hand side of the keyway, there is a longitudinal, profiled rib 51 extending along the key plug. The profile rib 51 has a base portion 52 (concealed by the blocking element 20 in fig. 1d) and an end portion 53 provided with a downwardly 5 directed tongue 54.
On the left hand side, the keyway has two longitudinal ribs 55 and 56 at the lower portion of the keyway.
The key blade 60 (see fig. 1d), according to the present invention, has a profile shape which is substantially supplementary to the keyway 50. Accordingly, the key 60 has a lower base portion 60a, which is relatively wide, and an upper portion 60b, which is relatively narrow.
At the right hand side (as seen in figure 1d) the key blade has a longitudinally extending groove 61 with an outer portion 62, and an inner, undercut portion 63. The profile groove 61 has an inner wall 64 and an opposite side wall 65, which is inclined and faces the bottom wall 64 and also forms the in-side wall of a ridge 66 extending along the key blade 60.
As will be evident from figure 1d, the profile groove 61 acco-modates the longitudinally extending profile rib 51, including the downwardly directed tongue 54 in the undercut portion of the groove 61.
On the left hand side, the key blade 60 has two longitudinal grooves 67 and 68 corresponding to the profile ribs 55, 56.
As appears from figure if, the outer portion 62 of the profile groove 61, and the corresponding base portion 52 of the pro-file rib 51 has a slanted upper wall 69 and a slanted surface 59, respectively.
Now, since the sectional profile of the key blade 60 corre-sponds to the cross-sectional profile of the keyway 50, the key blade 60 can be inserted partially or fully into the key-way, as is known in the art. Of course, only key blades being cut with the particular profile of the keyway may be fully in-serted into the keyway.
In order to allow for further variations of the exact profile of the keyway, there is provided, according to the present in-vention, a blocking element 20 (as mentioned above) which can be regarded as a movable profile portion.
Generally, the blocking element has a profile section, which corresponds to the longitudinally extending groove 61 in the key blade. However, in the region of the outer portion 62 of the groove 61, it is somewhat larger, in a direction parallel to the central plane A. So, it does not fit into the profile groove of the keyway along the full length thereof.
However, according to the present invention, the key blade 60 is provided with a local recess 70 which constitutes a locally expanded portion of the profile groove 61 and is wide enough to accommodate the uppermost portion of the blocking element 20, as will be explained more fully below.
In order to secure a well-defined mobility of the blocking element 20, it is integrated with or firmly connected to a body 23, which is guided for elevational movement in parallel to the central plane A of the key way in a substantially cy-lindrical cavity 24 at the side of the keyway, in parallel to the central plane A. Thus, the body 23 is guided for movement up and down in the cylindrical cavity 24, so that the integ-rated or connected blocking element 20 is also movable up and down.
The blocking element 20 may protrude partially or fully into the profile groove 61, in a cut-out portion of the profile rib. 51.
The interaction between the blocking element and the key blade is illustrated in figures 2a, 2b, 3a, 3b. Initially, when the keyway 50 is empty (see fig. le), the blocking element 20 will be positioned in its lowermost position, because of the action of a compression spring 26 in the cavity 24 (figure 1d). In the embodiment of figures 2a, 2b, 3a, 3b, the profile groove 61 of the key blade 60 has no undercut portion, but this will not make any difference to the interaction between the key blade and the blocking element 20.
When the key blade 60 is inserted into the keyway 50, a lower, first portion 21 of the blocking element 20 will make contact with a ramp surface 75 near the tip end of the key blade. By way of this contact, the blocking element 20 will move upwards and take the position shown in figures 1d and 2b. Here, the upper, second portion 22 of the blocking element 20 will be accommodated in the above-mentioned recess 70, which is lo-cally cut out in this particular part of the keyblade, so the width of the profile groove is effectively widened in this re-gion.
Without such a recess 70, the blocking element would be jammed between the ramp surface 75 and the upper, slanted wall 69 of the longitudinal profile groove.
In the embodiment shown in figures 2a and 2b, the blocking pin 20 is located deep inside the keyway near the tip end of the key blade upon full insertion of the key blade into the key-way. The first or lower projecting portion 21 of the blocking element 20 contacts a machined, slightly recessed surface 76 (fig. 3b) adjacent to the lower side wall of the profile groove (in this embodiment there is no undercut portion), whereas the upper or second projecting portion 22 of the blocking element 20 is accommodated in the local recess 70.
This recess 70 is confined to the region of the fully inserted key blade in the vicinity of the blocking element 20. In fi-gures 4, 5, 6, the blocking element 20 is located closer to the entrance of the keyway, so when the key blade is fully in-serted into the keyway, the blocking element 20 is far away from the tip end of key blade. In order to accommodate the whole cross-section of the blocking element 20, the lower part of the key blade material next to the groove 61 is taken away.
Thus, the ridge portion 66, except for a portion near the tip end of the key blade, is cut away up to the location of the blocking element, leaving a lower side wall 77. In this case, of course, the local upper recess, accommodating the second or upper projecting portion 22 of the blocking element 20 is located so as to start, with some overlap, where the lower side wall 77 and an adjoining inclined or ramp surface 78 ends. The overlap length should correspond to or slightly exceed the dimension of the blocking element 20 in the longitudinal direction of the key plug.
The upper, slanted wall portion of the recess 70 has an angle corresponding to the second projecting portion 22 of the blocking element 20.
This recess 70 is confined to the region of the fully inserted key blade in the vicinity of the blocking element 20. In fi-gures 4, 5, 6, the blocking element 20 is located closer to the entrance of the keyway, so when the key blade is fully in-serted into the keyway, the blocking element 20 is far away from the tip end of key blade. In order to accommodate the whole cross-section of the blocking element 20, the lower part of the key blade material next to the groove 61 is taken away.
Thus, the ridge portion 66, except for a portion near the tip end of the key blade, is cut away up to the location of the blocking element, leaving a lower side wall 77. In this case, of course, the local upper recess, accommodating the second or upper projecting portion 22 of the blocking element 20 is located so as to start, with some overlap, where the lower side wall 77 and an adjoining inclined or ramp surface 78 ends. The overlap length should correspond to or slightly exceed the dimension of the blocking element 20 in the longitudinal direction of the key plug.
The upper, slanted wall portion of the recess 70 has an angle corresponding to the second projecting portion 22 of the blocking element 20.
As will be seen from figure 4, the key blade is provided with a second local recess 70 near the tip end, just like the key blade shown in figures 3a and 3b. Therefore, the key blade of figure 4 will cooperate also with a blocking element 20 ar-ranged deep inside the keyway, like the one shown in figure 2b.
Accordingly, by having two or more blocking elements distrib-uted longitudinally along the keyway, it is possible to pro-vide a hierarchic system with master keys that open all indi-vidual locks having blocking pins at various locations.
The blocking element in the lock may be urged to move up and down only by interaction with the profile groove and its ad-joining recesses above and below the groove, without any spring acting on the body in the side cavity. Thus, the block-ing element will then be positively guided by the upper and lower side walls of the partially expanded profile groove.
The exact configuration of the key blade may differ from the embodiments described herein, within the scope of the appended claims.
Accordingly, by having two or more blocking elements distrib-uted longitudinally along the keyway, it is possible to pro-vide a hierarchic system with master keys that open all indi-vidual locks having blocking pins at various locations.
The blocking element in the lock may be urged to move up and down only by interaction with the profile groove and its ad-joining recesses above and below the groove, without any spring acting on the body in the side cavity. Thus, the block-ing element will then be positively guided by the upper and lower side walls of the partially expanded profile groove.
The exact configuration of the key blade may differ from the embodiments described herein, within the scope of the appended claims.
Claims (11)
1. A key for use in an associated cylinder lock provided with a rotatable key plug having a longitudinal key way, said key having a substantially flat key blade (60) and being characterised in that - said substantially flat key blade has a longitudinally ex-tending profile groove (61) at at least one side surface thereof, - said profile groove is provided with an inner, longitudinally straight portion corresponding to the outermost portion of a profile rib in said longitudinal key way of the key plug, - said substantially flat key blade also has at least one lo-cal recess (70) adjacent to said profile groove, - said at least one local recess constitutes a locally ex-panded portion of said profile groove, and - said locally expanded portion of the profile groove has a cross-section with two opposite, non-symmetrical side walls, which extend in the longitudinal direction of the key blade.
2. A key as defined in claim 1, wherein said inner, straight portion of said profile groove of the key blade extends along at least a part of said key blade, whereas said adjoining lo-cal recess is limited to a longitudinally confined portion of the key blade being shorter than said major part.
3. A key as defined in claim 1, wherein said inner, straight portion of said profile groove of the key blade has a substan-tially rectangular cross-section.
4. A key as defined in claim 1, wherein said inner, straight portion of said profile groove of the key blade has an under-cut part.
5. A key as defined in claim 2, wherein said profile groove in the side surface of said key blade has an outer, longitudi-nally straight portion extending along at least a part of the length of said inner, straight portion and merging with the latter, said outer, longitudinally straight portion of the groove having an upper wall being slanted and facing away from the key blade.
6. A key as defined in claim 5, wherein said locally expanded portion of the profile groove has a first or lower wall por-tion, oriented substantially perpendicularly to said side sur-face of the key blade, and a second or upper, slanted wall portion being inclined so as to face outwardly from the asso-ciated side of the key blade.
7. A key as defined in claim 1, wherein said locally expanded portion of the profile groove has a longitudinally adjoining opposite recess at the opposite side wall of the profile groove, said longitudinally adjoining opposite recess being located opposite to said local recess and, in the longitudinal direction, closer to the tip end of the key blade.
8. A key as defined in claim 7, wherein said longitudinally adjoining recess is constituted by a ramp surface leading from the bottom edge of the key blade into said profile groove.
9. A key as defined in claim 7, wherein said longitudinally adjoining opposite recess is a recess in said opposite side wall and has a longitudinally straight surface extending in parallel to said profile groove.
10. A key as defined in claim 7, wherein the key blade has at least two locally expanded profile groove portions, and an ad-joining opposite recess between each pair of such locally ex-panded profile groove portions.
11. A key as defined in claim 7, wherein there is a longitudi-nal overlap between said locally expanded profile groove por-tion and said longitudinally adjoining opposite recess.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0900209A SE0900209A1 (en) | 2009-02-18 | 2009-02-18 | Profiled key with local recess |
| SE0900209-8 | 2009-02-18 | ||
| PCT/SE2010/050187 WO2010096008A1 (en) | 2009-02-18 | 2010-02-18 | Profiled key with local recess |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2749810A1 CA2749810A1 (en) | 2010-08-26 |
| CA2749810C true CA2749810C (en) | 2013-04-02 |
Family
ID=42334993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2749810A Active CA2749810C (en) | 2009-02-18 | 2010-02-18 | Profiled key with local recess |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2398981B1 (en) |
| CA (1) | CA2749810C (en) |
| SE (1) | SE0900209A1 (en) |
| WO (1) | WO2010096008A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3603687A1 (en) * | 1986-02-06 | 1987-08-13 | Dom Sicherheitstechnik | LOCKING CYLINDER AND RELATED FLAT KEY |
| AT392508B (en) | 1987-07-03 | 1991-04-25 | Evva Werke | Flat key and associated cylinder lock |
| DE3817494A1 (en) * | 1988-05-21 | 1989-11-23 | Karrenberg Fa Wilhelm | Locking device consisting of a flat key and of a lock cylinder |
| CH679507A5 (en) * | 1989-12-15 | 1992-02-28 | Bauer Kaba Ag | |
| SE505885C2 (en) * | 1993-12-30 | 1997-10-20 | Bo Widen | Cylinder lock-key combination, key, key blank and lock included in the combination |
| SE505364C2 (en) | 1993-12-30 | 1997-08-11 | Bo Widen | Cylinder lock-key combination, key, key blank and lock |
| BE1011912A3 (en) * | 1998-08-28 | 2000-02-01 | Litto | Assembly of cylinder and turn key. |
| DE19859714C1 (en) * | 1998-12-23 | 2000-06-29 | Tiefenthal Schlies Systeme Gmb | Lock cylinder with flat key |
| US6983630B2 (en) * | 2003-07-09 | 2006-01-10 | Kaba Ilco Corp. | Programmable cylinder lock system |
| US7159424B2 (en) * | 2003-09-22 | 2007-01-09 | Winloc Ag | Lock and key system with extra code combinations |
-
2009
- 2009-02-18 SE SE0900209A patent/SE0900209A1/en unknown
-
2010
- 2010-02-18 WO PCT/SE2010/050187 patent/WO2010096008A1/en active Application Filing
- 2010-02-18 EP EP10744025.7A patent/EP2398981B1/en active Active
- 2010-02-18 CA CA2749810A patent/CA2749810C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| SE533192C2 (en) | 2010-07-20 |
| CA2749810A1 (en) | 2010-08-26 |
| EP2398981B1 (en) | 2019-07-17 |
| SE0900209A1 (en) | 2010-07-20 |
| EP2398981A4 (en) | 2014-12-31 |
| WO2010096008A1 (en) | 2010-08-26 |
| EP2398981A1 (en) | 2011-12-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |