US3633393A - Lock having magnets incorporated in rotary tumblers - Google Patents

Lock having magnets incorporated in rotary tumblers Download PDF

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Publication number
US3633393A
US3633393A US767708A US3633393DA US3633393A US 3633393 A US3633393 A US 3633393A US 767708 A US767708 A US 767708A US 3633393D A US3633393D A US 3633393DA US 3633393 A US3633393 A US 3633393A
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United States
Prior art keywords
magnets
key
tumblers
tumbler
rotary
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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 - Lifetime
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US767708A
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English (en)
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Hideyoshi Hisatsune
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Individual
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
    • E05B47/0042—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets with rotary magnet tumblers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/40—Portable
    • Y10T70/413—Padlocks
    • Y10T70/417—Combination-controlled
    • Y10T70/422—Rigid shackle
    • Y10T70/424—Sliding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/40—Portable
    • Y10T70/413—Padlocks
    • Y10T70/437—Key-controlled
    • Y10T70/446—Rigid shackle
    • Y10T70/452—Sliding
    • Y10T70/461—Short leg engaged
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7057—Permanent magnet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7588—Rotary plug
    • Y10T70/7627—Rotary or swinging tumblers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7904—Magnetic features

Definitions

  • magnets having different polarity are incorporated inside the lock, and unlocking is easily effected by positioning the magnet of the key at the place corresponding to that of the magnet of the lock.
  • the lock of this type is not practical due to the defeet that the positions and polarity of the magnets incorporated inside the lock are readily searched from the outside, which leads to picking and unloading.
  • An object of the present invention made in view of the defect set forth hereinabove is to provide a lock of a simple structure comprising rotatable tumblers having magnets incorporated therein and serving to prevent the polarity of the magnets from being searched from the outside, and permitting a large number of different fellow keys to be applied to the identical lock.
  • FIGS. 1 and 2 are illustrations of an operative principle of magnet, exemplified in two modes
  • FIGS. 3 through show an embodiment of a lock of the cylinder type, in which FIG. 3 is a perspective view of respective components, and FIGS. 4 and 5 are longitudinal sectional views of a main body of the lock in the locked situation and in the unlocked situation, respectively;
  • FIGS. 6 through 11 are illustrations of a padlock, in which FIG. 6 is a longitudinal sectional view of the padlock, and FIGS. 7 through 9 are sectional views taken along lines VII VII, VIIIVIII, and IXIX of FIG. 6 in the unlocked situation, respectively; and
  • FIGS. 10 and 11 are same sectional views as in FIGS. 7 and 8, but shown in the locked situation.
  • FIGS. 1 and 2 Two examples are shown, of different arrangements of the magnets.
  • A, and A are permanent magnets of disc shape, each bearing the north pole and the south pole at each semicircular portion and rotatably carried by shafts B, and B extending therethrough and supported by bearings C and C.
  • Said two magnets, in the drawing, are arranged vertically in circumferentially confronting relation with the ends of each magnet facing the respective bearings C and C and at a distance permitting the magnetomative forces to be exerted upon each other.
  • two permanent magnets of a disc shape each bearing the north pole and the south pole on a semicircular portion and carried by the shafts B, or B, respectively, are arranged horizontally coaxially with one another facing each other and at a distance permitting magnetic force act between the confronting magnets.
  • Rotary shafts B, and B extending through the axis of each magnet are coupled at D so as to permit each magnet to rotate independently.
  • magnetic force interacts between the opposed poles, the north and south poles, of the confronting magnets, so that the north and south poles of the left-hand side magnet A, attract the opposed poles of other magnet A thereby maintaining the situation of FIG. 2.
  • the other magnet in either drawing rotates in the direction of the dotted arrow mark.
  • the number of rotations of the pair of magnets is equal; for example, if one of magnets rotates one revolution, the other magnet rotates one revolution.
  • the arrangement of magnets in the first example is adapted for a lock of the cylinder type shown in FIGS. 3 through 5, and the arrangement of magnets in the second example is adapted for the padlock shown in FIGS. 6 through 11.
  • numeral 1 is a knob projecting inside or outside a door, which includes therein a cylinder 3 fixedly supported to the knob and a rotatable member 6 turned with a key inserted thereinto to operate a locking system 5.
  • the cylinder 3 is formed of a nonmagnetic material with a longitudinally elongated appearance, and has rotary tumblers 7,, 7 7 and 7., connected at 8 thereto and independently rotatably and at a certain space from each other at the inside and in the longitudinal direction.
  • Said rotary tumblers each have permanent magnets 9,, 9 9 and 9., of cylindrical or columnar shape, each embedded therein coaxially and with a plane end surface.
  • Each of the magnets 9,, 9,, 9,, and 9, incorporated in the rotary tumblers bears, in the position shown in FIG. 4, the north pole at the left-hand semicircular portion and the south pole at the right-hand semicircular portion, so that magnetic force interacts between adjacent magnets to maintain the polar disposition and the arrangement of tumblers, as shown in FIG. 4.
  • the rotary tumblers have cutout portions or flat portions 7,, 7 7 and 7, formed circumferentially and in the longitudinal direction thereof. It is noted that each cutout portion is differently positioned in relation to the line 1 (FIG. 3) connecting the north pole and the south pole of magnet.
  • the cutout portion or flat portion 7 is formed at an angle of 0 in relation to the line 1; the cutout portion 7 is formed at an angle of the cutout portion 7;, is formed at an angle of 180; and the cutout portion 7., is formed at an angle of in relation to the line I.
  • the cutout portion may be formed at a desired angle in relation to the line I other than those exemplified herein.
  • the rotatable member 6 is rotatably positioned in cylinder 3 against axial motion, and is formed of a nonmagnetic material with a columnar shape.
  • the rotatable member 6 has a keyhole 6a provided in a longitudinal direction at the inside thereof, and recesses or depressions 6,, 6 6;, and 6, each having an arch portion conforming to the circumference of a tumbler for receiving one-fourth of the circumference thereof, and provided at a distance similar to that between adjacent tumblers,
  • each tumbler fits into a corresponding recess or depression of the rotatable member 6 in the locked situation, as shown in FIG. 4.
  • the rotatable member 6 is checked from rotation in any direction.
  • the rotatable member 6 is provided at one end with a projection 6b connected with the desired locking system 5.
  • the key is formed of a nonmagnetic material with a square columnar configuration and has permanent magnets 4,, 4 4 and 4., embedded therein in a longitudinal direction and at a distance similar to that between adjacent rotary tumblers, in other words, at a position corresponding to each of recesses of the rotatable member 6 when the key is inserted.
  • Each of the permanent magnets bears the north pole and the south pole at each semicircular portion.
  • the polar disposition of each of magnets 4,, 4 4 and 4, depends upon that of the corresponding magnet 9,, 9 9 or 9., of the tumblers.
  • the action of magnets between the key 4 and the rotary tumblers 7,, 7,, 7;, and 7. will be described below.
  • the permanent magnet 4, of the key 4 Since the rotary tumbler 7, is provided with the cutout portion 7, at the side of the north pole of the columnar shape of magnet 9,, the permanent magnet 4, of the key 4 must locate the south pole upwardly, in order to confront said cutout portion 7, with the recess 6, of the rotatable member 6, at the time of unlocking. In such magnetic disposition, the permanent magnet 4, of the key 4 attracts the north pole of the permanent magnet g, of the rotary tumbler 7,, and repels the south pole thereof to turn the rotary tumbler 7, anticlockwisely by 90, thereby disengaging the circumference thereof from the recess or depression 6, of the rotatable member 6, and confronting the cutout portion 7, therewith. In the similar manner, poles of other magnets 4,, 4,, 4, of the key 4 are disposed to take the polar disposition of the magnets of the respective rotary tumblers 7 7 and 7, into account.
  • Locking or unlocking is effected as follows.
  • rotatable tumblers 7,, 7 7;,and 7, each undergo the magnetic force of the adjacent permanent magnets to rotate to fit the circumferential portions thereof into respective recesses 6,, 6 6,, and 6 of the rotatable member 6, thereby closing the lock.
  • the rotary tumblers are not alwaysrestored to their initial positions as shown in FIG. 4.
  • the north pole of the rotary tumbler 7, at the leftmost side is attracted by the south pole of the adjacent rotary tumbler 7 to turn the rotary tumbler 7, anticlockwisely by 90.
  • the south pole of this 9 is attracted by the north pole of the rotary tumbler 7 to turn the rotary tumbler 7 clockwisely by 90.
  • FIGS. 6 through 11 Another embodiment of lock according to the present invention will be described with reference to FIGS. 6 through 11 wherein a padlock is shown.
  • Numeral 10 is the main body of a padlock formed of a nonmagnetic material and having a hollow portion 10a, at one side of which rotary tumblers 11,, 11 ll, of cylindrical or columnar shape are independently rotatably in the sidewall of the main body in a vertical arrangement with a desired space between them.
  • Said rotary tumblers 11,, 11 and 11, have permanent magnets 13,, 13 and 13;, incorporated therein and are provided with cavities 11,, 11 and 11,, opening to the circumference thereof.
  • the permanent magnets 13,, 13 and 13 are ofa cylindrical or columnar shape and bear the south pole and the north pole, as in the former example.
  • Numeral 14 is a rod moving slidably in a vertical direction, when respective cavities 11,, 11 and 11 of the rotary tumblers are directed in the same direction, for example downwardly in FIG. 6, and having extensions 14,, 14 and 14;, formed integral therewith for engaging with or disengaging from these cavities.
  • Said rod 14 is provided in its lower portion with a slot 15 having a length similar to the sliding distance of the rod 14 and is connected at its upper end with one end ofa T-shaped connecting lever 19.
  • Numeral 16 is a projection extending from the main body and fitted into the slot 15.
  • Said T- shaped connecting lever 19 is pivoted at 20 swingeably to the main body 10 of the lock and engaged at one end with a fitting plate 17 through a slot provided therein.
  • Said fitting plate 17 is pressed by a spring 21 to engage with a portion 18a of a shackle 18 in the locked situation.
  • Numeral 22 is a pushbutton provided at the inside of the main body and in a position corresponding to other end of the T-shaped connecting lever 19 and having a spring 23 interposed between the main body 10 and the pushbutton 22.
  • Numeral 24 is a key, which is inserted into the side portion of the main body of the lock and formed of a nonmagnetic material with a rod shape and having permanent magnets 24,, 24 and 24 having a cylindrical or columnar shape similar to that of the cylindrical or columnar magnet of the rotary tumbler and incorporated therein in an arrangement corresponding to that of magnets 18,, 18 and 18 of rotary tumblers 11,, 11 and 1 1 as shown in FIG. 6.
  • FIG. 11 shows a polar disposition of magnets 13,, 13 and 13;, of the rotary tumblers in the locked situation.
  • the magnet of each rotary tumbler bears the north pole upwardly and the south pole downwardly, so that magnets of adjacent rotary tumblers may repel and attract each other.
  • Said rotary tumblers 11,, 11 and 11 have a part of their circumferential portions contacting with extensions 14,, 14 and 14,, ofthe rod 14, with cavities l 1,, 11 and 11 located at a different position, so that the rod 14 is checked from its upward motion to maintain the locked situation.
  • the lock is released by turning rotary tumblers 11,, 11 and 11,, to position cavities 11,, 11 and 11,, downwardly, so that the rod can move upwardly to fit the respective extensions into these cavities.
  • it is necessary to rotate the uppermost rotary tumbler 11, anticlockwisely by the in termediately positioned rotary tumbler 11 clockwisely by 90 and the lowermost rotary tumbler 11 anticlockwisely by 45, respectively.
  • Such rotation of the respective rotary tumblers 11,, 11 and 11 is effected by the key 24 having magnets 24,, 24 and 24 whose polar disposition is shown in FIG. 9.
  • magnet 13, of the rotary tumbler 11 is, at its north and south poles, subject to repelling and attracting of the south pole and the north pole of magnet 24, to rotate the rotary tumbler 11, anticlockwisely by 90 at an angle, thereby locating the cavity 11, of said rotary tumbler 11, downwardly.
  • other rotary tumblers 11 and 11 are turned clockwisely or anticlockwisely to position the respective cavities 1 1 1 1 downwardly.
  • the distance between magnet of the rotary tumbler and that of the key must be smaller than that between adjacent two tumblers, as in the former embodiment.
  • the lock of the present invention provides many advantages and the probability of picking a lock is completely eliminated since it is impossible to search for the polarity of the magnets, which has been often encountered in locks of the type incorporating magnets; a large number of different mating keys are applicable, since the rotational range of the rotary tumblers is determined in relation to the locking or unlocking mechanism; and the structure is simple.
  • a magnetic lock comprising a rotatable member made of nonmagnetic material and having a plurality of recesses spaced from one another longitudinally of its axis,
  • each tumbler being slabbed off around a portion of its periphery so that, when it is rotated to a position where said slabbed off portion registers with the recess associated with the tumbler, the tumbler is disengaged from said associated recess, cylindrical magnet rotatably mounted in each tumbler, each magnet having opposite polar portions extending, respectively, part way around its periphery, and a key insertable in a hole in said member, said key having a plurality of magnets rotatably mounted therein and spaced longitudinally of the key for cooperation with the magnets mounted in said tumblers.
  • a magnetic lock comprising a first member; a second member movable with reference to said first member to and from a starting position, said members having adjacent surfaces and one of said surfaces being provided with a first socket; a magnetic locking element turnable in said first socket between at least one first position and at least one second position in which it respectively permits and prevents movement of said second member from starting position, said locking element normally assuming said second position and the other of said surfaces having a second socket which receives a portion of said locking element in said starting position of said second member while said locking element assumes said second position; and a key adapted to be applied to one of said members in at least one predetermined position and having magnet means arranged to effect angular displacement of said locking element to said first position in said predetermined position of the key.

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US767708A 1967-10-19 1968-10-15 Lock having magnets incorporated in rotary tumblers Expired - Lifetime US3633393A (en)

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JP42066901A JPS4810839B1 (enrdf_load_stackoverflow) 1967-10-19 1967-10-19

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742739A (en) * 1972-07-31 1973-07-03 Orsi E Magnetic lock
US3834197A (en) * 1972-09-21 1974-09-10 Greer Hydraulics Inc High security, card operable magnetic lock
US3974669A (en) * 1975-08-25 1976-08-17 American Locker Company, Inc. Lock
US3995460A (en) * 1975-05-30 1976-12-07 Sedley Bruce S Magnetic card key operated door lock structure
US4111014A (en) * 1977-01-14 1978-09-05 Norman Epstein Combination lock
US4440007A (en) * 1978-02-20 1984-04-03 EVVA-Werk Specialerzeugung von Zylinder-und-Sicherheitsschlossern GmbH & Co. KG Control device for cylinder locks
US4686841A (en) * 1984-10-09 1987-08-18 Evva-Werk Spezialerzeugung Von Zylinder- Und Sicherheitsschlossern Gesellschaft Mbh & Co. Kommanditgesellschaft Rotatable magnetic tumbler and magnetic lock containing same
US4899559A (en) * 1988-11-30 1990-02-13 Chern Jenn Rong Hanging lock
US4936896A (en) * 1988-12-19 1990-06-26 Hiroshi Hasegawa Device for confirming whether a lock is locked or unlocked
US5622067A (en) * 1994-01-27 1997-04-22 Sudhaus Schloss-Und Beschlagtechnik Gmbh & Co. User-codable magnetic lock
US5761936A (en) * 1994-04-20 1998-06-09 Miwa Lock Co., Ltd. Cylindrical lever-type door lock
WO2004083574A1 (fr) * 2003-02-17 2004-09-30 Concepts Et Innovations En Securite Magnetique Dispositif de verrouillage a commande magnetique
US20050061038A1 (en) * 2003-09-23 2005-03-24 Sinox Co., Ltd. Shackle locks with a removable shackle
US20050278186A1 (en) * 2004-06-15 2005-12-15 Carlos De La Huerga Word puzzle assembly and methods related thereto
US20050288082A1 (en) * 2004-06-15 2005-12-29 Carlos De La Huerga Word puzzle assembly and methods related thereto
EA008491B1 (ru) * 2001-08-24 2007-06-29 Дзе Осси Кидз Той Компани Пти Лимитед Переключаемое магнитное устройство
US20120291501A1 (en) * 2010-02-26 2012-11-22 Gentile Frank L Magnetic lock and key assembly
ITMI20111725A1 (it) * 2011-09-26 2013-03-27 Leonardo Chiarion Dispositivo di accoppiamento magnetico.
US20130152631A1 (en) * 2011-11-29 2013-06-20 Steve Hyppolite Toy Bracelet Unit With Detachable Wristband And Interchangeable Key
US20140283567A1 (en) * 2011-06-19 2014-09-25 Marc Tobias Magnetically repelling lock assembly
US9010163B2 (en) 2013-03-15 2015-04-21 Kwikset Corporation Removable key cassette assembly
US9528297B2 (en) 2015-03-30 2016-12-27 Rexnord Industries, Llc Magnetic lock and key assembly
EP3135142A1 (en) * 2015-08-31 2017-03-01 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Magnetic closure element and closure device
US10125521B2 (en) * 2015-04-02 2018-11-13 Les Industries Capitol Inc. Magnetic lock system
EP3438383A1 (en) 2017-07-31 2019-02-06 Vestel Elektronik Sanayi ve Ticaret A.S. Secure magnetic key and lock system
US11230859B2 (en) * 2019-07-05 2022-01-25 Daniel Petersen Magnetic keyed lock

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01147954U (enrdf_load_stackoverflow) * 1988-03-31 1989-10-13
JP6139053B2 (ja) * 2011-12-09 2017-05-31 株式会社岡村製作所 ロック装置

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE56992C (de) * FARBWERKE VORM. MEISTER LUCIUS & BRÜNING in Höchst a. M Verfahren zur Darstellung von Farbstoffen durch Einwirkung von primären Aminen auf das Condensationsprodukt von Nitrosodialkylanilin mit /?-Naphtolsulfosäure
US2384208A (en) * 1944-05-25 1945-09-04 Neptune Meters Ltd Magnetic lock
US2393428A (en) * 1945-06-23 1946-01-22 Neptune Meters Ltd Magnetic lock
US3421348A (en) * 1966-07-29 1969-01-14 Huwil Werke Gmbh Magnetically operating lock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE56992C (de) * FARBWERKE VORM. MEISTER LUCIUS & BRÜNING in Höchst a. M Verfahren zur Darstellung von Farbstoffen durch Einwirkung von primären Aminen auf das Condensationsprodukt von Nitrosodialkylanilin mit /?-Naphtolsulfosäure
US2384208A (en) * 1944-05-25 1945-09-04 Neptune Meters Ltd Magnetic lock
US2393428A (en) * 1945-06-23 1946-01-22 Neptune Meters Ltd Magnetic lock
US3421348A (en) * 1966-07-29 1969-01-14 Huwil Werke Gmbh Magnetically operating lock

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742739A (en) * 1972-07-31 1973-07-03 Orsi E Magnetic lock
US3834197A (en) * 1972-09-21 1974-09-10 Greer Hydraulics Inc High security, card operable magnetic lock
US3995460A (en) * 1975-05-30 1976-12-07 Sedley Bruce S Magnetic card key operated door lock structure
US3974669A (en) * 1975-08-25 1976-08-17 American Locker Company, Inc. Lock
US4111014A (en) * 1977-01-14 1978-09-05 Norman Epstein Combination lock
US4440007A (en) * 1978-02-20 1984-04-03 EVVA-Werk Specialerzeugung von Zylinder-und-Sicherheitsschlossern GmbH & Co. KG Control device for cylinder locks
US4686841A (en) * 1984-10-09 1987-08-18 Evva-Werk Spezialerzeugung Von Zylinder- Und Sicherheitsschlossern Gesellschaft Mbh & Co. Kommanditgesellschaft Rotatable magnetic tumbler and magnetic lock containing same
US4899559A (en) * 1988-11-30 1990-02-13 Chern Jenn Rong Hanging lock
US4936896A (en) * 1988-12-19 1990-06-26 Hiroshi Hasegawa Device for confirming whether a lock is locked or unlocked
US5622067A (en) * 1994-01-27 1997-04-22 Sudhaus Schloss-Und Beschlagtechnik Gmbh & Co. User-codable magnetic lock
US5761936A (en) * 1994-04-20 1998-06-09 Miwa Lock Co., Ltd. Cylindrical lever-type door lock
EA008491B1 (ru) * 2001-08-24 2007-06-29 Дзе Осси Кидз Той Компани Пти Лимитед Переключаемое магнитное устройство
US20070113605A1 (en) * 2003-02-17 2007-05-24 Jesus Lopez Magnetically controlled locking device
WO2004083574A1 (fr) * 2003-02-17 2004-09-30 Concepts Et Innovations En Securite Magnetique Dispositif de verrouillage a commande magnetique
US20050061038A1 (en) * 2003-09-23 2005-03-24 Sinox Co., Ltd. Shackle locks with a removable shackle
US20050278186A1 (en) * 2004-06-15 2005-12-15 Carlos De La Huerga Word puzzle assembly and methods related thereto
US20050288082A1 (en) * 2004-06-15 2005-12-29 Carlos De La Huerga Word puzzle assembly and methods related thereto
US8863563B2 (en) * 2010-02-26 2014-10-21 Rexnord Industries, Llc Magnetic lock and key assembly
US20120291501A1 (en) * 2010-02-26 2012-11-22 Gentile Frank L Magnetic lock and key assembly
US20140283567A1 (en) * 2011-06-19 2014-09-25 Marc Tobias Magnetically repelling lock assembly
US8997538B2 (en) * 2011-06-19 2015-04-07 Mul-T-Lock Technologies Ltd. Magnetically repelling lock assembly
ITMI20111725A1 (it) * 2011-09-26 2013-03-27 Leonardo Chiarion Dispositivo di accoppiamento magnetico.
WO2013045390A1 (en) * 2011-09-26 2013-04-04 Zamengo, Giovanni Magnetic zip fastener.
US20130152631A1 (en) * 2011-11-29 2013-06-20 Steve Hyppolite Toy Bracelet Unit With Detachable Wristband And Interchangeable Key
US9010163B2 (en) 2013-03-15 2015-04-21 Kwikset Corporation Removable key cassette assembly
US9528297B2 (en) 2015-03-30 2016-12-27 Rexnord Industries, Llc Magnetic lock and key assembly
US10125521B2 (en) * 2015-04-02 2018-11-13 Les Industries Capitol Inc. Magnetic lock system
EP3135142A1 (en) * 2015-08-31 2017-03-01 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Magnetic closure element and closure device
US10586641B2 (en) 2015-08-31 2020-03-10 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. Magnetic closure
US11227710B2 (en) 2015-08-31 2022-01-18 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. Magnetic closure
EP3438383A1 (en) 2017-07-31 2019-02-06 Vestel Elektronik Sanayi ve Ticaret A.S. Secure magnetic key and lock system
US11230859B2 (en) * 2019-07-05 2022-01-25 Daniel Petersen Magnetic keyed lock

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Publication number Publication date
JPS4810839B1 (enrdf_load_stackoverflow) 1973-04-07

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