AU2002354811B9 - Profile system for forming the cross-section of flat keys and of key channels - Google Patents
Profile system for forming the cross-section of flat keys and of key channels Download PDFInfo
- Publication number
- AU2002354811B9 AU2002354811B9 AU2002354811A AU2002354811A AU2002354811B9 AU 2002354811 B9 AU2002354811 B9 AU 2002354811B9 AU 2002354811 A AU2002354811 A AU 2002354811A AU 2002354811 A AU2002354811 A AU 2002354811A AU 2002354811 B9 AU2002354811 B9 AU 2002354811B9
- Authority
- AU
- Australia
- Prior art keywords
- key
- groove
- branch
- flat
- section
- 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.)
- Expired
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Classifications
-
- 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
- E05B19/0029—Key profiles characterized by varying cross-sections of different keys within a lock system
Landscapes
- Milling Processes (AREA)
- Lock And Its Accessories (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Fishing Rods (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Body Structure For Vehicles (AREA)
- Paper (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Component Parts Of Construction Machinery (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
TECHNICAL FIELD The invention relates to a system of profiles defining the cross sections of flat keys having substantially plane and approximately parallel flat faces and corresponding key ways or key channels in lock cylinders, particularly for composing lock systems, with ribs and grooves on the flat sides of the bit and the key way, designated as elements of profile variations and of guiding profiles. The invention also relates to a flat key encompassing this system of profiles.
The protection of life, of privacy, and of property are of dominant relevance. Therefore, particular importance is attributed to locks and keys. In locked systems, access areas are defined and obtained by assigning each key of the system to one or more locks. This assignment, or exclusion, of key and lock in regard to the locking function is obtained by the cross section profile of the key and the cross section of the key way in lock systems based on lock cylinders and flat keys. Only if the contour of the cross section of the key way precisely matches the cross section of a flat key or encloses the same, will the key fit into the lock. As soon as there is an intersection between the cross section of the flat key and the cross section of the key way, the key does not have authorisation to lock with the specific lock cylinder.
Of course, this association of the key with the lock cylinder by means of the profile, the cross section of the key, particularly a flat key, and the key way of the lock cylinder, holds also for the individual cylinder and the individual key which is not an intrinsic part of a lock system.
The fact that a key cannot be directly copied meets safety requirements. A spare key can be obtained by the authorised person from the original manufacturer via safety certificates and identity checks. If blanks can be obtained on the market, a locksmith service can readily produce a spare key with a copy-milling machine by producing the toothing pattern on the front side of the key. If, in addition, a copy-milling machine is capable of sensing the contour of the cross section on the plane faces of an original key and if appropriate milling tools are available, a spare key can be produced even by cutting a metal plate. Thus, if so far by restricting free availability on the market, the production of spare keys with key contours subject to restrictions was not possible because of unavailable blanks, locksmith services nowadays have the technical capability of copying a key in regard to toothing patterns as well as contour. The profile of the key is sensed mechanically or optically from the side. The results of this lateral scanning is followed by the insertion and advance of one or several milling cutters for creating U-shaped, V-shaped or rectangular grooves. By IRN 633077 inclining the blank, grooves can be cut also at an angle to the centre line of the profile cross section, in the form of backed-off grooves.
STATE OF THE ART From DE 31 36 314 Al there is known a key which has ribs extending laterally far beyond imaginary lateral lines of an assumed central cross section, so that this key does not have plane and approximately parallel flat faces. These salient ribs have grooves cut into the direction of motion of the pins. When the salient ribs of the key are filed down, the key can be readily inserted into the key channel and may even effect locking.
A key profile should be configured so that working on it by flat milling does not lead to success.
It is the object of the present invention to substantially overcome or at least ameliorate one or more of the disadvantages of the prior art.
DISCLOSURE OF THE INVENTION Accordingly, in a first aspect, the present invention provides a profile system for defining the cross section of flat keys for lock cylinders with substantially plane and approximately parallel flat faces of the key, a back section of the key and an oppositely situated bit with teeth on the front face for positioning locking pins subdivided into core pins and housing pins spring-loaded in corresponding key channels of cylinder cores against the front face of the bit in the direction toward the back section of the key, wherein grooves cut into the flat sides of the flat key and ribs arranged in the key channel are provided as profile elements of variation and as guiding profile elements, and wherein a branch groove or a branch rib issues from at least one groove in the flat key or, respectively, rib in the key channel, with the direction of plunge-cutting of the latter differing from the direction of plunge-cutting of the groove or, respectively, the rib, wherein the branch groove is provided at a distance from the bottom of a guiding groove in the flat key or, respectively, the branch rib is provided at a distance from the base of the guiding rib.
Lateral scanning of the profile grooves of an original key does not sense the branch groove or senses it only incompletely. The branch groove would have to be produced by reclamping the blank and repeated scanning of the original. Reclamping into an angular position of the center line of the profile groove deviating from the original direction of plunge-cutting of a profile groove necessarily causes lateral shifting so that a branch groove or an additional groove issuing laterally from a groove cannot be produced [R:\LIBLL] 15831 .doc:TCW with proper dimensions, for proper functioning, and at low cost. In practice, this can be done only in the lock-manufacturing plant which has profile reaming machines and large milling centers where clamping alignment errors do not occur because separate error-inducing operations with repeated measurements of an initial position are not required.
Producing branch grooves, which issue from the interior of a groove cut into the flat side of a key, is as difficult as the appropriately matched production of a key channel profile in the lock cylinder. The branch groove or branch grooves advantageously issue from a lateral flank or from the lateral flanks of a groove at a distance from the bottom of the groove. In this way, distinct branching of the grooves into two or more directions is obtained and this branching can hardly be reproduced. In view of the guarantee that this branching groove or branching grooves should always be present in lock systems for safety reasons also in a subordinated key), the groove and branch groove or the rib and the branch rib are conveniently provided as guiding profile elements. In a lock system, the guiding profile is formed on each key so that the desired security is in all cases given. The guiding profile elements are advantageously provided as profile elements having at least one branch groove at a groove or a branch rib at a rib of the guiding profile, with the profile elements configured as oppositely directed, overlapping profile elements issuing from both fiat faces of the key. If an attempt were made to produce a so-to-speak superodinated profile by grinding out the branching groove, the resulting enlargement of the groove would cause weakening of the entire cross section and, in most instances, collapse of the cross section. Thus, there exist restrictions in regard to producing a spare key with the conventional means and unauthorised copying of the key is precluded. It must be noted that the production of a key not corresponding to the original is considered as production of a burglary tool and is punishable by law and that the lock system is degraded by such a key in a manner detrimental to competition. In regard to manufacture or for safety reasons, the plunge-cut width of the branch groove or branch grooves has about one third of the length of the flank or of the bottom of the groove from which the branch groove issues.
In a second aspect, the present invention provides flat keys for a lock cylinder, having substantially plane and approximately parallel flat faces, a back section of the key and an oppositely situated bit with teeth on the front face for positioning locking pins subdivided into core pins and housing pins, wherein from at least one groove of overlapping oppositely directed grooves in the center portion of the cross section of the key bit there issues a further groove as a branch groove at a distance from the bottom of [R:\LIBLL] 15831 .doc:TCW the groove and wherein the direction of plunge-cutting of the groove and of the branch groove are different.
Preferably, the directions of plunge-cutting of the groove and of the branch groove are at variance by approximately 600.
This flat key can be a key of a lock system or an individual key. It is particularly convenient to have the branch groove or the branch grooves issue from the lateral flanks of the groove in the flat key at a distance from the bottom of the groove. Such a key is particularly difficult to produce and, by virtue of the branch groove, weakens the strength of the key to a lesser extent than a groove possibly situated at a lower position in the bottom of the main groove.
BRIEF DESCRIPTION OF THE DRAWINGS Embodiments of the object of the invention are shown in the drawings. Figures 1 to 4 show cross sections of keys, Figure 5 shows the cross section of a key channel.
OPTIMAL EMBODIMENT OF THE INVENTION [R:\LIBLL]15831 .doc:TCW A key 1 of a lock system has in the cross section of the bit an overlapped guiding profile with grooves 2, 3 each protruding beyond the center line of the profile and situated approximately in the middle of its length. Such an embodiment fulfills the task of a guiding profile, namely to position the key in the key hole or key channel and covers the top portion of core pins, it serves for secure sensing in the lock cylinder. A branch groove 4 in the form of a triangular groove issues from a lateral flank of groove 2. The direction of plunge-cutting (arrow 5) for producing the groove 2 differs from the direction of plunge-cutting (arrow 6) the branch groove 4. Thus, two operations and reclamping of the blank are required for the changed direction of working.
Figure 2 shows a key 7 and, in addition, a rectangular branch groove 8 in the groove 3.
Figure 5 shows the corresponding key channel 9: the same has ribs 2' and 3' and branch ribs 4' and Since the branch groove 8 is missing, a key according to Figure 1 could not be inserted into the key channel 9.
If a locksmith service had an original key 7 according to Figure 2 for producing a duplicate key, only the grooves 2 and 3 could be cut in the one direction of plunge-cutting. If an attempt were made to form grooves 2 and 3 by deeeper plunge-cutting such that the branch grooves 4 and 8 were included, the key 7 would break. The contours of deeper plunge-cutting are shown by dashed lines in Figure 2.
Figure 3 shows a key 10, which on a guiding profile according to Figure 1 with grooves 2 and 3 and branch groove 4, has, in addition, grooves 11, 12, and 13, 13' as well as 14, 14' as a profile variation. Groove 11 is an example of a system with a variation.
Figure 4 illustrates a key 15 which has grooves 2, 3, and branch groove 4 as the guiding profile. In groove 16, which like all the other non-referenced grooves is part of the profile variation, there is provided a branch groove 17 as part of the profile variation, with groove 17 issuing opposite groove 16 from a lateral flank under a different direction of plunge-cutting of the milling tool. This branch groove 17 has a bottom which is inclined relative to the plane of the lateral flank of groove This poses even greater obstacles to reproducing a key. Thus, not only the profile elements of the guiding profile but also those of the profile variation with branch grooves on the lateral flanks or at the bottom of the groove in the case of rectangular grooves or trapezoidal grooves) can be formed.
What has been said about the key, the grooves and the one or more branch grooves holds with the proper interpretation for the corresponding ribs and branch ribs in the key channel. The IRN 633077 invention relates to individual keys as well as to system keys, with the latter having the branch groove in a profile section which must be necessarily present in all keys of the system so that the safety effect is ensured with all keys in combination with the one or more matching lock cylinders.
IRN 633077 EDITORIAL NOTE APPLICATION NUMBER 2002354811 The description consists of pages numbered 1 to The claims consist of pages numbered 8 and 9
Claims (7)
1. A profile system for defining the cross section of flat keys for lock cylinders with substantially plane and approximately parallel flat faces of the key, a back section of the key and an oppositely situated bit with teeth on the front face for positioning locking pins subdivided into core pins and housing pins spring-loaded in corresponding key channels of cylinder cores against the front face of the bit in the direction toward the back section of the key, wherein grooves cut into the flat sides of the flat key and ribs arranged in the key channel are provided as profile elements of variation and as guiding profile elements, and wherein a branch groove or a branch rib issues from I0 at least one groove in the flat key or, respectively, rib in the key channel, with the direction of plunge-cutting of the latter differing from the direction of plunge-cutting of the groove or, respectively, the rib, wherein the branch groove is provided at a distance from the bottom of a guiding groove in the flat key or, respectively, the branch rib is provided at a distance from the base of the guiding rib.
2. The profile system according to Claim 1, wherein the guiding profile grooves and the guiding profile ribs are configured as guiding profile elements in the center portion of the cross section of the bit or, respectively, in the center portion of the cross section of a key channel in the form of oppositely directed overlapping profile elements on the two flat faces of the key or, respectively, of the walls of the key channel, with these profile elements covering the top part of pins in the key channel, with at least one branch groove at a groove of the flat key or, respectively, with at least one branch rib in the key channel.
3. The profile system according to Claim 1 or 2, wherein the width of the plunge-cut incision for the branch groove or branch grooves amounts to about one third of the length of the flank or, respectively, of the bottom of the groove from which the branch groove issues.
4. Flat keys for a lock cylinder, having substantially plane and approximately parallel flat faces, a back section of the key and an oppositely situated bit with teeth on the front face for positioning locking pins subdivided into core pins and housing pins, wherein from at least one groove of overlapping oppositely directed grooves in the center portion of the cross section of the key bit there issues a further groove as a branch groove at a distance from the bottom of the groove and wherein the direction of plunge-cutting of the groove and of the branch groove are different.
The flat keys of Claim 4, wherein the directions of plunge-cutting of the groove and of the branch groove are at variance by approximately [R:\LIBLL] 15831 .doc:TCW
6. A profile system for defining the cross section of flat keys for lock cylinders, said system being substantially as hereinbefore described with reference to any one embodiment, as that embodiment is depicted in the accompanying drawings.
7. Flay keys for a lock cylinder, said keys being substantially as hereinbefore described with reference to any one embodiment, as that embodiment is depicted in the accompanying drawings. Dated 2 July, 2004 Kaba GmbH Patent Attorneys for the Applicant/Nominated Person l0 SPRUSON FERGUSON [R:\LIBLL] 15831.doc:TCW
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0053301U AT5395U1 (en) | 2001-07-04 | 2001-07-04 | PROFILE SYSTEM FOR CROSS-SECTION TRAINING OF FLAT KEYS |
| ATGM533/2001 | 2001-07-04 | ||
| PCT/AT2002/000124 WO2003004806A1 (en) | 2001-07-04 | 2002-04-24 | Profile system for forming the cross-section of flat keys and of key channels |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AU2002354811A1 AU2002354811A1 (en) | 2003-01-21 |
| AU2002354811B2 AU2002354811B2 (en) | 2004-07-22 |
| AU2002354811B9 true AU2002354811B9 (en) | 2004-12-16 |
Family
ID=3493126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2002354811A Expired AU2002354811B9 (en) | 2001-07-04 | 2002-04-24 | Profile system for forming the cross-section of flat keys and of key channels |
Country Status (21)
| Country | Link |
|---|---|
| EP (1) | EP1362153B1 (en) |
| CN (1) | CN100497873C (en) |
| AT (3) | AT5395U1 (en) |
| AU (1) | AU2002354811B9 (en) |
| CZ (1) | CZ300417B6 (en) |
| DE (1) | DE50200866D1 (en) |
| DK (1) | DK1362153T3 (en) |
| EA (1) | EA005048B1 (en) |
| EE (1) | EE05142B1 (en) |
| ES (1) | ES2227484T3 (en) |
| HK (1) | HK1062312A1 (en) |
| HR (1) | HRP20040115B1 (en) |
| HU (1) | HU228320B1 (en) |
| NO (1) | NO324784B1 (en) |
| NZ (1) | NZ525457A (en) |
| PL (1) | PL194878B1 (en) |
| PT (1) | PT1362153E (en) |
| RS (1) | RS50195B (en) |
| SI (1) | SI22009A (en) |
| SK (1) | SK287509B6 (en) |
| WO (1) | WO2003004806A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10306371B4 (en) * | 2003-02-15 | 2004-12-23 | Wilka Schließtechnik GmbH | Profile variation on flat keys or locking cylinders belonging to the key channels |
| AT500638B8 (en) * | 2004-08-03 | 2007-02-15 | Kaba Gmbh | LOCKING CYLINDER, FLAT WRENCH AND METHOD FOR THE PRODUCTION THEREOF |
| DE102010017165B4 (en) * | 2010-05-31 | 2013-04-04 | C.Ed. Schulte Gesellschaft mit beschränkter Haftung Zylinderschlossfabrik | Method for profiling a turning flat key and turning flat key produced by the method based on a turning flat-plate profile |
| DK2686510T5 (en) | 2011-05-02 | 2014-10-27 | Kaba Gmbh | Flat key for a lock cylinder and lock cylinder |
| DE102018101438A1 (en) * | 2018-01-23 | 2019-07-25 | Assa Abloy Sicherheitstechnik Gmbh | Flat key profile for a lock and key system |
| AT525384B1 (en) * | 2021-03-31 | 2023-06-15 | Dormakaba Austria Gmbh | Flat keys, key blanks, processes for their production and lock cylinders |
| US11536047B1 (en) | 2022-08-22 | 2022-12-27 | Winloc Ag | Key plug, a cylinder lock, a cylinder lock and key combination and a method to manufacture a key plug |
| US11542724B1 (en) | 2022-08-22 | 2023-01-03 | Winloc Ag | Key blank, a key, and a cylinder lock and key combination |
| US11613909B1 (en) | 2022-08-22 | 2023-03-28 | Winloc Ag | Key blank, a coded key and a cylinder lock and key system with improved stop arrangement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325241A (en) * | 1979-04-24 | 1982-04-20 | Ernst Keller | System for the increase of the number of differing locking possibilities in rotary cylinder locks |
| EP0616100A1 (en) * | 1993-03-13 | 1994-09-21 | Heinz Wolter | Closing device consisting of reversible flatkey and cylinderlock |
| US5809816A (en) * | 1993-12-30 | 1998-09-22 | Widen; Bo | Cylinder lock and key combination including a profiled key |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3136314A1 (en) * | 1981-09-12 | 1983-03-24 | Fa. Wilhelm Karrenberg, 5620 Velbert | Flat key for lock cylinders |
| DE19829521C2 (en) * | 1998-07-02 | 2000-12-14 | August Boerkey Nachf Gmbh | Flat bowl for locking cylinders |
| DE10029113C1 (en) * | 2000-06-14 | 2002-01-10 | Ikon Ag | Method of making a flat key |
-
2001
- 2001-07-04 AT AT0053301U patent/AT5395U1/en not_active IP Right Cessation
-
2002
- 2002-04-24 CZ CZ20040882A patent/CZ300417B6/en not_active IP Right Cessation
- 2002-04-24 PT PT02782424T patent/PT1362153E/en unknown
- 2002-04-24 RS YUP-1036/03A patent/RS50195B/en unknown
- 2002-04-24 NZ NZ525457A patent/NZ525457A/en not_active IP Right Cessation
- 2002-04-24 SK SK323-2004A patent/SK287509B6/en not_active IP Right Cessation
- 2002-04-24 EP EP02782424A patent/EP1362153B1/en not_active Expired - Lifetime
- 2002-04-24 PL PL367144A patent/PL194878B1/en unknown
- 2002-04-24 HU HU0500104A patent/HU228320B1/en unknown
- 2002-04-24 EA EA200400143A patent/EA005048B1/en not_active IP Right Cessation
- 2002-04-24 AT AT02782424T patent/ATE274121T1/en active
- 2002-04-24 DK DK02782424T patent/DK1362153T3/en active
- 2002-04-24 EE EEP200400112A patent/EE05142B1/en not_active IP Right Cessation
- 2002-04-24 CN CNB028134281A patent/CN100497873C/en not_active Expired - Lifetime
- 2002-04-24 DE DE50200866T patent/DE50200866D1/en not_active Expired - Lifetime
- 2002-04-24 WO PCT/AT2002/000124 patent/WO2003004806A1/en not_active Application Discontinuation
- 2002-04-24 ES ES02782424T patent/ES2227484T3/en not_active Expired - Lifetime
- 2002-04-24 SI SI200220042A patent/SI22009A/en active Search and Examination
- 2002-04-24 AU AU2002354811A patent/AU2002354811B9/en not_active Expired
- 2002-04-25 AT AT0064202A patent/AT410460B/en not_active IP Right Cessation
-
2004
- 2004-01-05 NO NO20040026A patent/NO324784B1/en not_active IP Right Cessation
- 2004-02-03 HR HR20040115A patent/HRP20040115B1/en not_active IP Right Cessation
- 2004-05-19 HK HK04103570A patent/HK1062312A1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325241A (en) * | 1979-04-24 | 1982-04-20 | Ernst Keller | System for the increase of the number of differing locking possibilities in rotary cylinder locks |
| EP0616100A1 (en) * | 1993-03-13 | 1994-09-21 | Heinz Wolter | Closing device consisting of reversible flatkey and cylinderlock |
| US5809816A (en) * | 1993-12-30 | 1998-09-22 | Widen; Bo | Cylinder lock and key combination including a profiled key |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TC | Change of applicant's name (sec. 104) |
Owner name: KABA GMBH Free format text: FORMER NAME: KABA GEGE GMBH |
|
| FGA | Letters patent sealed or granted (standard patent) | ||
| SREP | Specification republished | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |