EP1899560B1 - Lock for internal door - Google Patents
Lock for internal door Download PDFInfo
- Publication number
- EP1899560B1 EP1899560B1 EP06764504.4A EP06764504A EP1899560B1 EP 1899560 B1 EP1899560 B1 EP 1899560B1 EP 06764504 A EP06764504 A EP 06764504A EP 1899560 B1 EP1899560 B1 EP 1899560B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- follower
- lock
- latch bolt
- locking piece
- force transmission
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B55/00—Locks in which a sliding latch is used also as a locking bolt
- E05B55/06—Locks in which a sliding latch is used also as a locking bolt the handle being disconnected
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B55/00—Locks in which a sliding latch is used also as a locking bolt
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/0053—Other details of locks; Parts for engagement by bolts of fastening devices means providing a stable, i.e. indexed, position of lock parts
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/16—Use of special materials for parts of locks
- E05B15/1635—Use of special materials for parts of locks of plastics materials
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/04—Spring arrangements in locks
- E05B2015/0496—Springs actuated by cams or the like
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/04—Locks or fastenings with special structural characteristics for alternative use on the right-hand or left-hand side of wings
- E05B63/044—Locks or fastenings with special structural characteristics for alternative use on the right-hand or left-hand side of wings with reversible bolt or bolt head
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/0035—Locks or fastenings for special use for privacy rooms, e.g. bathrooms
Definitions
- the invention relates to a lock for internal door in accordance with the preamble of claim 1.
- Locks for internal doors are used in doors, which primarily separate various kinds of interior spaces from another so that the doors may easily be locked temporarily, if so required.
- One typical application is a toilet door.
- Prior art locks for internal doors have, in spite of their fairly simple locking operations as such, a quite complicated structure, which tends to increase the manufacturing costs.
- a lock for internal door which has two separate bolts operated from their respective operating axes.
- Prior art locks with only one locking bolt are disclosed e.g. in DE 39090C and DE 30797C .
- a purpose of the invention is to provide an improved lock for internal door, in which the above needs are taken into account better than before.
- the lock casing is provided with a locking piece, which is removable independent on the latch bolt and which may be moved by means of a second follower from a first position, where it allows the retraction of the latch bolt, to a second position, where it is adapted to prevent the retraction of the latch bolt and to provide dead-locking of the latch bolt when engaging with the second follower.
- a locking piece which is removable independent on the latch bolt and which may be moved by means of a second follower from a first position, where it allows the retraction of the latch bolt, to a second position, where it is adapted to prevent the retraction of the latch bolt and to provide dead-locking of the latch bolt when engaging with the second follower.
- a force transmission means and a first follower are preferably arranged with respect to one another so that the force transmission means can be turned to a position, in which force transmission from the first follower to the force transmission means is disconnected and the force transmission means is spring-loaded toward said position disconnecting the force transmission.
- the locking piece is provided with a guide surface, which is adapted to determine the turning freedom of the force transmission means in each case in said spring-loaded direction.
- the locking piece is provided with a first and a second restricting member, which are adapted to cooperate with said second follower in order to make the locking piece move.
- the restricting members may preferably define the turning freedom of said second follower.
- said second restricting member which is located farther away from the protruding end of the latch bolt, is adapted to allow said pulling of the latch bolt.
- said second restricting member which is located farther away from the protruding end of the latch bolt, is given a resilient construction.
- the locking piece may also with advantage be provided with a spring, which urges said second follower into its extreme position in each case. This tends to secure the operation of the lock.
- said second follower may preferably be shaped so as to guide the locking piece.
- a cost-effective solution is provided, if the locking piece as well as the restricting and resilient members therein are manufactured of plastic as one piece by using injection moulding. Thus, a plurality of members and components may be united as one piece.
- This manufacturing method may naturally be applied also to the manufacture of several other parts of the lock casing. For instance the latch bolt and the spring for changing it between right-hand and left-hand usage may, depending on the application, also be manufactured as one piece, if so required.
- the reference number 1 refers to a lock casing in a lock for internal door provided with a front plate 1 a, through the opening of which a reciprocable latch bolt 2 protrudes.
- the latch bolt is guided by the opening of the front plate and a stopper 1 b in the lock casing.
- a spring 3 urges the latch bolt 2 into its protruding position.
- the lock casing comprises a first operating axis 4, on which a handle-actuated follower 5 is most suitably mounted, which follower is by means of a turnable force transmission means 7 arranged to move the latch bolt 2 to a retracted position inside the lock casing (not shown) for opening the door.
- the lock casing also comprises a second operating axis 11, on which a second follower 12 is similarly mounted, which follower is turnable by a key, turning knob or the like, depending on the application, for locking the latch bolt 2 from the other side of the door optionally into its protruding position.
- the lock casing is provided with a spring 6 for the first follower 5 for holding the handle (not shown) mounted on the operating axis 4 normally in a horizontal position.
- the follower has a cam member 5a, which is in cooperation with a cam member 7a of the force transmission means 7 for turning the force transmission means 7 counter-clockwise around a guiding pin 8 against the force of a spring 9 in Figs. 1 and 2 .
- a protrusion 7b of the force transmission means moves the latch bolt 2, by means of a stopper 2a arranged therein, to the right in the figures, i.e. into the lock casing 1.
- the second follower 12 is provided with a guide opening 12a, which is shaped so as to enable the operation of the follower 12 by either a key or a turning knob or the like equipped with a quadratic spindle.
- the lock casing is also provided with a locking piece 13, which may be moved by a cam member 12b of the follower 12 from the position according to Fig. 1 over to the position according to Fig. 2 , in which it locks the latch bolt 2 by means of a locking member 13a into its protruding position.
- the movements of the locking piece 13 are guided by the stopper 1 b in the lock casing, the stopper 2a on the body of the latch bolt and a guide surface 12c of the second follower 12.
- a recess 13f in the locking piece allows the turning movement of the protrusion 7b on the force transmission means for retracting the latch bolt 2.
- the locking piece 13 is provided with a first restricting member 13c and a second restricting member 13d. At the same time these define the turning freedom of the cam member 12b and thus also that of the follower 12, since the locking piece 13 is, in its extreme positions shown in Figs. 1 and 2 , in contact with the inner surfaces of the lock casing 1.
- the locking piece is also provided with a spring 13e, which urges the cam member 12b in both extreme positions of the locking piece 13 toward the respective extreme positions of the follower 12.
- the locking of the lock occurs as follows. While the follower 12 in Fig. 1 is turned anti-clockwise by a key or a turning knob installed on the operating axis 11, the cam member 12b of the follower turns at the same time against the force of the spring 13e and, when hitting the restricting member 13c, moves the locking piece 13 until it takes the position according to Fig. 2 , in which it is located immediately behind the enlarged end of the latch bolt 2. In this position the latch bolt 2 is locked in such a way that the movement of the locking piece 13 is prevented by its engagement with the second follower 12.
- the suitable shaping of the cam member's 12b end and the spring 13e also prevent any attempts to move the latch bolt 2 into the lock 1 casing by manipulating it by a tool.
- the restricting member 13d is made resilient.
- the restricting member 13d is by means of a resilient arm 13d' and a stationary pin 13d" in contact with the locking piece 13.
- the structure of the locking piece 13 appears from Figs. 3a - 3d .
Landscapes
- Lock And Its Accessories (AREA)
Description
- The invention relates to a lock for internal door in accordance with the preamble of claim 1.
- Locks for internal doors are used in doors, which primarily separate various kinds of interior spaces from another so that the doors may easily be locked temporarily, if so required. One typical application is a toilet door. As these locks are manufactured in large volumes and may be in frequent use, their construction is important in terms of dependability on one hand and manufacturing costs on the other hand. Prior art locks for internal doors have, in spite of their fairly simple locking operations as such, a quite complicated structure, which tends to increase the manufacturing costs. On the market, there is e.g. a lock for internal door, which has two separate bolts operated from their respective operating axes. Prior art locks with only one locking bolt are disclosed e.g. in
DE 39090C andDE 30797C . A purpose of the invention is to provide an improved lock for internal door, in which the above needs are taken into account better than before. - The objects of the invention are achieved as disclosed in the appended claim 1, and more closely as explained in the other claims. According to the invention, the lock casing is provided with a locking piece, which is removable independent on the latch bolt and which may be moved by means of a second follower from a first position, where it allows the retraction of the latch bolt, to a second position, where it is adapted to prevent the retraction of the latch bolt and to provide dead-locking of the latch bolt when engaging with the second follower. Thus, one single bolt in the lock may be actively deadlocked in a simple manner.
- A force transmission means and a first follower are preferably arranged with respect to one another so that the force transmission means can be turned to a position, in which force transmission from the first follower to the force transmission means is disconnected and the force transmission means is spring-loaded toward said position disconnecting the force transmission. Further, the locking piece is provided with a guide surface, which is adapted to determine the turning freedom of the force transmission means in each case in said spring-loaded direction. This arrangement makes it possible to manage the position of the force transmission means at each specific time by means of the locking piece. The arrangement is also advantageous for the reason that the latch bolt itself cannot be affected by exertion of force on the lever handle.
- In a preferred embodiment, the locking piece is provided with a first and a second restricting member, which are adapted to cooperate with said second follower in order to make the locking piece move. At the same time, the restricting members may preferably define the turning freedom of said second follower.
- It is advantageous to arrange the latch bolt, in a manner known as such, so that it can be pulled outwards, from the lock casing against the force of a spring for turning the latch bolt 180° in order to change between right-hand and left-hand usage of the lock. To this end, said second restricting member, which is located farther away from the protruding end of the latch bolt, is adapted to allow said pulling of the latch bolt. In a practical application, said second restricting member, which is located farther away from the protruding end of the latch bolt, is given a resilient construction.
- The locking piece may also with advantage be provided with a spring, which urges said second follower into its extreme position in each case. This tends to secure the operation of the lock.
- For guiding the movements of the locking piece there may be stationary stoppers in the lock casing and moreover, said second follower may preferably be shaped so as to guide the locking piece.
- A cost-effective solution is provided, if the locking piece as well as the restricting and resilient members therein are manufactured of plastic as one piece by using injection moulding. Thus, a plurality of members and components may be united as one piece. This manufacturing method may naturally be applied also to the manufacture of several other parts of the lock casing. For instance the latch bolt and the spring for changing it between right-hand and left-hand usage may, depending on the application, also be manufactured as one piece, if so required.
- In the following, the invention is explained by way of example with reference to the appended drawings, in which
-
Figure 1 depicts a lock for internal door according to the invention with the cover of the lock casing open, illustrating the normal state thereof, in which the latch bolt is not locked; -
Figure 2 depicts the lock for internal door according toFigure 1 illustrating similarly the state, in which the latch bolt is locked; and -
Figures 3a - 3d depict a locking piece included in the lock for internal door according to the invention, shown from various perspectives. - In the drawings the reference number 1 refers to a lock casing in a lock for internal door provided with a
front plate 1 a, through the opening of which areciprocable latch bolt 2 protrudes. The latch bolt is guided by the opening of the front plate and a stopper 1 b in the lock casing. Aspring 3 urges thelatch bolt 2 into its protruding position. Further, the lock casing comprises a first operating axis 4, on which a handle-actuatedfollower 5 is most suitably mounted, which follower is by means of a turnable force transmission means 7 arranged to move thelatch bolt 2 to a retracted position inside the lock casing (not shown) for opening the door. The lock casing also comprises asecond operating axis 11, on which asecond follower 12 is similarly mounted, which follower is turnable by a key, turning knob or the like, depending on the application, for locking thelatch bolt 2 from the other side of the door optionally into its protruding position. - The lock casing is provided with a spring 6 for the
first follower 5 for holding the handle (not shown) mounted on the operating axis 4 normally in a horizontal position. The follower has acam member 5a, which is in cooperation with acam member 7a of the force transmission means 7 for turning the force transmission means 7 counter-clockwise around a guidingpin 8 against the force of aspring 9 inFigs. 1 and2 . Then, a protrusion 7b of the force transmission means moves thelatch bolt 2, by means of a stopper 2a arranged therein, to the right in the figures, i.e. into the lock casing 1. - The
second follower 12 is provided with a guide opening 12a, which is shaped so as to enable the operation of thefollower 12 by either a key or a turning knob or the like equipped with a quadratic spindle. The lock casing is also provided with alocking piece 13, which may be moved by acam member 12b of thefollower 12 from the position according toFig. 1 over to the position according toFig. 2 , in which it locks thelatch bolt 2 by means of alocking member 13a into its protruding position. The movements of thelocking piece 13 are guided by the stopper 1 b in the lock casing, the stopper 2a on the body of the latch bolt and aguide surface 12c of thesecond follower 12. In the normal situation according toFig. 1 , arecess 13f in the locking piece allows the turning movement of the protrusion 7b on the force transmission means for retracting thelatch bolt 2. - To bring about the movements, the
locking piece 13 is provided with a first restrictingmember 13c and a second restrictingmember 13d. At the same time these define the turning freedom of thecam member 12b and thus also that of thefollower 12, since thelocking piece 13 is, in its extreme positions shown inFigs. 1 and2 , in contact with the inner surfaces of the lock casing 1. The locking piece is also provided with aspring 13e, which urges thecam member 12b in both extreme positions of thelocking piece 13 toward the respective extreme positions of thefollower 12. - The locking of the lock occurs as follows. While the
follower 12 inFig. 1 is turned anti-clockwise by a key or a turning knob installed on theoperating axis 11, thecam member 12b of the follower turns at the same time against the force of thespring 13e and, when hitting the restrictingmember 13c, moves thelocking piece 13 until it takes the position according toFig. 2 , in which it is located immediately behind the enlarged end of thelatch bolt 2. In this position thelatch bolt 2 is locked in such a way that the movement of thelocking piece 13 is prevented by its engagement with thesecond follower 12. The suitable shaping of the cam member's 12b end and thespring 13e also prevent any attempts to move thelatch bolt 2 into the lock 1 casing by manipulating it by a tool. - It appears from
Figs. 1 and2 that simultaneously with the movement of thelocking piece 13 to its position, which locks the latch bolt, also the force transmission means 7 turns into the position according toFig. 2 , as thespring 9 acts on the protrusion 7b of the force transmission means keeping it constantly in contact with the guide surface 13b of the locking piece. As a consequence of this turning movement thecam member 7a of the force transmission means moves into the position ofFig. 2 , in which the force transmission from thefollower 5 to the force transmission means 7 is disconnected. Thus, exertion of force from the operating axis 4 does not have any effect on the locking of thelatch bolt 2. - It is possible to choose and, if necessary, change between the right-hand and left-hand usage of the lock in a manner known per se without opening the lock casing. This is performed by pulling the
latch bolt 2 from its end further outwards against the force of thespring 10 so that the entire enlarged end of thelatch bolt 2 comes out of the lock casing. Then the latch bolt may be turned 180°, whereby the lock is changed from right-hand usage to left-hand usage or vice versa. AsFig. 1 reveals, the restrictingmember 13d of the locking piece would, in principle, prevent this, since at the same time as the latch bolt is pulled outwards, its stopper 2a acts on the protrusion 7b of the force transmission means, which seeks to move thelocking piece 13 accordingly. On account of this, the restrictingmember 13d is made resilient. In the embodiment of the figures the restrictingmember 13d is by means of aresilient arm 13d' and astationary pin 13d" in contact with thelocking piece 13. The structure of thelocking piece 13 appears fromFigs. 3a - 3d . - The invention is not limited to the shown embodiment, but several variations are conceivable within the scope of the invention as defined by the appended claims.
Claims (8)
- A lock for internal door comprising a lock casing (1) with a latch bolt (2) spring-loaded into a position, in which it protrudes from the lock casing, a first operating axis (4), on which a first follower (5) is mounted, which follower is turnable by a lever handle, turning knob or the like and arranged, with the help of a turnable force transmission means (7), to retract the latch bolt (2) into the lock casing (1), a second operating axis (11), on which a second follower (12) is mounted, which follower is turnable by a key, turning knob or the like for locking the latch bolt (2) optionally into its protruding position, and a locking piece (13), which is movable independent of the latch bolt (2) and which may be moved from a first position allowing the retraction of the latch bolt (2), to a second position, in which it is arranged to prevent the retraction of the latch bolt (2), characterised in that the movements of the locking piece (13) are provided by means of said second follower (12), which is arranged in cooperation with the locking piece (13) so that they together also provide for dead-locking of the latch bolt (2), in such a way that the movement of the locking piece (13) is prevented by its engagement with the second follower (12).
- A lock for internal door according to claim 1, characterised in that the force transmission means (7) and the first follower (5) are mutually arranged so that the force transmission means (7) can be turned to a position, in which force transmission from the first follower (5) to the force transmission means (7) is disconnected, that the force transmission means (7) is spring-loaded (9) toward said position, in which the force transmission is disconnected, and that the locking piece (13) has a guide surface (13b), which is adapted to determine the turning freedom of the force transmission means in each case in said spring-loaded direction.
- A lock for internal door according to claim 1 or 2, characterised in that the locking piece (13) is provided with a first (13c) and second restricting member (13d), which are adapted to cooperate with said second follower (12) in order to bring about the movements of the locking piece (13), and which at the same time are arranged to determine the moving freedom of said second follower (12).
- A lock for internal door according to claim 3, characterised in that the latch bolt (2) may, in a manner known as such, be pulled outwards from the lock casing (1) against the force of a spring (10), for turning the latch bolt 180° in order to change between right-hand and left-hand usage of the lock, and that said second restricting member (13d) located farther away from the protruding end of the latch bolt is adapted to allow said pulling of the latch bolt.
- A lock for internal door according to claim 3 or 4, characterised in that said second restricting member (13d), which is located farther away from the protruding end of the latch bolt, is arranged to have a resilient structure.
- A lock for internal door according to anyone of the preceding claims, characterised in that the locking member (13) is provided with a spring (13e), which is adapted to urge said second follower (12) into its extreme position in each case.
- A lock for internal door according to anyone of the preceding claims, characterised in that said second follower (12) is shaped so as to guide the movements of the locking piece (13).
- A lock for internal door according to anyone of the preceding claims, characterised in that the locking piece (13) as well as the restricting and resilient members (13c, 13d, 13d', 13d", 13e) therein are manufactured of plastic as one piece by using injection moulding.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20055392A FI120554B (en) | 2005-07-07 | 2005-07-07 | Intermediate Door lock |
PCT/FI2006/050265 WO2007006852A1 (en) | 2005-07-07 | 2006-06-16 | Lock for internal door |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1899560A1 EP1899560A1 (en) | 2008-03-19 |
EP1899560B1 true EP1899560B1 (en) | 2017-08-02 |
Family
ID=34803261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06764504.4A Active EP1899560B1 (en) | 2005-07-07 | 2006-06-16 | Lock for internal door |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1899560B1 (en) |
DK (1) | DK1899560T3 (en) |
FI (1) | FI120554B (en) |
LT (1) | LT1899560T (en) |
NO (1) | NO341741B1 (en) |
RU (1) | RU2413062C2 (en) |
UA (1) | UA90529C2 (en) |
WO (1) | WO2007006852A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
UA98348C2 (en) * | 2007-09-07 | 2012-05-10 | Киса С.П.А. | Antipanic lock |
CN101240678B (en) * | 2008-01-08 | 2011-12-28 | 吴沛华 | Single inclined tongue lock |
NL1036964C2 (en) * | 2009-05-15 | 2010-11-18 | Nemef B V | WINDOW HOUSING WHICH INCLUDES A STOOL-BASED SHOT. |
TR201810719T4 (en) * | 2015-07-07 | 2018-09-21 | Kale Kilit Ve Kalip Sanayi Anonim Sirketi | Lock for interior doors. |
DE102016221101A1 (en) * | 2016-10-26 | 2018-04-26 | Aug. Winkhaus Gmbh & Co. Kg | lock |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE30797C (en) * | G. SCH WEISSGUT in München | Innovation in door locks | ||
BE523120A (en) * | ||||
DE39090C (en) * | 1886-05-14 | 1887-04-15 | W. C. HUMMEL in Flensburg, Holm Nr. 42 | Thürschlofs |
DE326674C (en) * | 1919-05-27 | 1920-10-01 | Karl Siebold | Bolt latch lock with a cross bolt that is used to lock the latch and to attack the nut |
US1788287A (en) * | 1928-04-26 | 1931-01-06 | Flagg Ernest | Lock and latch mechanism |
EP0653535B1 (en) * | 1993-11-15 | 1997-03-26 | Schloss- und Beschlägefabrik AG | Lock |
ES2159448B1 (en) * | 1997-08-04 | 2002-05-01 | Talleres Escoriaza Sa | "PICAPORTE LOCK". |
US6619705B2 (en) * | 2002-01-04 | 2003-09-16 | Schlage Lock Company | Mortise lockset with internal clutch |
-
2005
- 2005-07-07 FI FI20055392A patent/FI120554B/en active IP Right Grant
-
2006
- 2006-06-16 EP EP06764504.4A patent/EP1899560B1/en active Active
- 2006-06-16 DK DK06764504.4T patent/DK1899560T3/en active
- 2006-06-16 LT LTEP06764504.4T patent/LT1899560T/en unknown
- 2006-06-16 WO PCT/FI2006/050265 patent/WO2007006852A1/en active Application Filing
- 2006-06-16 RU RU2008104622/21A patent/RU2413062C2/en active
- 2006-06-16 UA UAA200801506A patent/UA90529C2/en unknown
-
2008
- 2008-01-31 NO NO20080570A patent/NO341741B1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
UA90529C2 (en) | 2010-05-11 |
DK1899560T3 (en) | 2017-11-06 |
WO2007006852A1 (en) | 2007-01-18 |
LT1899560T (en) | 2017-09-25 |
RU2008104622A (en) | 2009-08-20 |
FI20055392A (en) | 2007-01-08 |
EP1899560A1 (en) | 2008-03-19 |
FI120554B (en) | 2009-11-30 |
FI20055392A0 (en) | 2005-07-07 |
NO20080570L (en) | 2008-01-31 |
RU2413062C2 (en) | 2011-02-27 |
NO341741B1 (en) | 2018-01-15 |
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