US3349587A - Method of increasing the number of different locking combinations - Google Patents

Method of increasing the number of different locking combinations Download PDF

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Publication number
US3349587A
US3349587A US467423A US46742365A US3349587A US 3349587 A US3349587 A US 3349587A US 467423 A US467423 A US 467423A US 46742365 A US46742365 A US 46742365A US 3349587 A US3349587 A US 3349587A
Authority
US
United States
Prior art keywords
cylinder means
key
pin
locks
inner cylinder
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 - Lifetime
Application number
US467423A
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English (en)
Inventor
Keller Ernst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Publication of US3349587A publication Critical patent/US3349587A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E05B19/0035—Key profiles characterized by longitudinal bit variations
    • 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
    • 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
    • Y10T70/7565—Plural tumbler sets
    • 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
    • Y10T70/7593—Sliding tumblers
    • Y10T70/7599—Transverse of plug
    • Y10T70/7605—Pin 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
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7667—Operating elements, parts and adjuncts
    • Y10T70/7684—Plug
    • 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
    • Y10T70/7667—Operating elements, parts and adjuncts
    • Y10T70/7689—Tumblers
    • Y10T70/7701—Pin
    • 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
    • Y10T70/7729—Permutation
    • 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
    • Y10T70/7842—Single shank or stem
    • Y10T70/7859—Flat rigid
    • Y10T70/7864—Cylinder lock type

Definitions

  • the invention relates to a method of increasing the number of different locking combinations that can be provided in key-operated safety locks in which a rotatable inner cylinder is contained in a stationary outer cylinder and radial bores extending from the outer into the inner cylinder slidably contain two-part locking pins which prevent rotation of the inner cylinder unless they are displaced into particular positions by a key insertable into a passage for its reception in the inner cylinder and provided with recesses in its side faces for displacing the locking pins into said positions.
  • the object of the present invention is to provide a substantial increase in the number of locking combinations that can be made available in such a lock without 3,349,587 Patented Oct. 31, 1967 substantially increasing the cross section of the key and that of the channel for the reception of the key.
  • the method proposed by the present invention consists in not only varying the relative spacing y of the locking pins axially along the length of the inner cylinder and the axial distance x of the first locking pin of a row of locking pins from the abutment face 7 for the key on the end face of the inner cylinder, but also the radial distance A of the channel for the key from the circumferential surface of the inner cylinder.
  • the master key and possibly the supplementary keys can be provided on lines extending across the longitudinal axis of the key on at least one side of its centre line M with at least two countersinks or with a groove for the purpose of operating the locking pins in different locks in which the distance A of the channel for the insertion of the key from the circumferential surface of the inner cylinder differs.
  • the invention also relates to safety locks and keys for performing the method according to the invention.
  • FIG. 1 is a cross section of the cylinder of a lock of the invention having a channel of rhombic cross section for the reception of the key and two-part locking pins located in two different radial planes,
  • FIG. 2 is a longitudinal section of the cylinder taken on the line IIII in FIG. 1,
  • FIG. 3 is a cross section of the inner cylinder on a larger scale in which the channel for the reception of the key is spaced radially further away from the circumferential surface of the cylinder,
  • FIG. 4 is a cross section analogous to FIG. 3 in which the said radial distance has been further increased
  • FIG. 5 is a side view of a key that fits into any one of the channels in FIGS. 1, 2 or 3 and upon which the centres of all the countersinks it is possible to provide are marked, and
  • FIGS. 6 to 15 are key.
  • the cylinder 1 illustrated in FIGS. 1 and 2 is similar to that described in Swiss patent specification 344,637.
  • This outer cylinder 1 contains a rotatable inner cylinder 2.
  • the two cylinders 1 and 2 are each provided with radial bores 3 located in two planes E and E placed at a relative angle at slightly less than
  • the bores 3 contain two-part locking pins comprising an outer portion 4a and an inner head portion 4b.
  • the pins 4a, 4b are each urged inwards by a spring 5.
  • the channel 6 for the reception of the key is of rhombic cross section and corresponds to the cross section of the key that fits into the cylinder. Channel 6 is completely contained inside the inner cylinder 2.
  • the inner head portions 4b of the different locking pins are of different lengths, whereas the sides of the corresponding key are provided with countersinks of different depths for cooperation With the points of the pins.
  • the insertion of the key into the lock therefore displaces the locking pins in such a way that the division between the two parts 4a, 4b of the pins is shifted into alignment with the peripheral surface of the inner cylinder 2 when the head portions have engaged their associated countersinks in the key, thus permitting the inner cylinder to be turned inside the outer cylinder 1.
  • the inner head portions 4b of all the locks comprised in a set are of equal length embodiments of difierent types of and the corresponding countersinks in the key are all of correspondingly equal depth.
  • Variation of the lock is achieved by varying the relative axial spacing y of the locking pins 4a, 4b in a manner as such already known to the art, as well as the axial distance x of the first locking pin of a row of locking pins from the abutment face 7 for the key on the end face of the inner cylinder 2 and by also varying the radial distance A A A (FIGS. 1, 3 and 4) of the channel 6 for the key from the circumferential surface of the inner cylinder.
  • FIG. 5 is a side view of a key upon which the intersections of longitudinal and transverse lines indicate the positions of every possible countersink which can be combined in different patterns.
  • the key shown in FIG. is intended for a cylinder containing two rows of 5 locking pins which are relatively spaced at intervals y, whereas the distance of the first pair of pins from the abutment face 7 may be X or X.
  • the selected countersinks 8 may then be located on each half of the side face of the key on one of the lines a, b or c at intervals y.
  • Single keys that is to say keys which will open only one particular lock may be provided for instance with patterns of countersinks on the lines a, as in FIG. 6, or on the lines b as in FIG. 7 or on the lines 0 as in FIG. 8. Naturally these patterns may be selectively varied.
  • a group key which is capable of opening all the locks in which the patterns of countersinks are on the lines a as in FIG. 6 is illustrated in FIG. 9.
  • the key shown in FIG. 10 analogously opens all locks in which the pattern of countersinks is on the lines b and the key in FIG. 11 opens all locks with patterns of countersinks on the lines c.
  • the master key according to FIG. 12 opens every lock in the entire installation. This key is not provided with separate countersinks 8 but with grooves 9 extending across its longitudinal axis, the depth of the grooves being the same as the depth of the countersinks 8 in the individual and group keys.
  • keys which permit some of the locks having patterns on the lines 11 and/or b and/ or c to be opened.
  • Such keys are provided on lines across their longitudinal axis on at least one side of their centre line M with at least two countersinks 8 (cf. FIG. 13) or they are provided with grooves 9 (cf. FIG. 14).
  • keys of the kind shown in FIG. 15 can be provided which have grooves 9 on transverse lines as well as individual countersinks 8.
  • each lock having (a) outer stationary cylinder means;
  • said outer and inner cylinder means being each formed with a plurality of radial bores extending in a common plane substantially parallel to said axis, the bores of said inner cylinder means being simultaneously radially alignable with the bores of the outer cylinder means by said rotation,
  • said inner cylinder means being formed with an axial channel communicating with each of said bores therein;
  • locking pin means including an outer pin and an inner pin conformingly movable in each bore between an unlocking position in which a portion of the inner pin extends into said channel, the remainder of the inner pin is contained in said inner cylinder means, and the outer pin is contained in said outer cylinder means, and a locking position in which respective integral portions of said outer pin extend in corresponding bore portions in each cylinder means,
  • the inner cylinder means, pins, and channels in the several locks being substantially identical, and the position of each channel relative to the associated axis along another plane defining a fixed angle with said common plane being different from the corresponding position of the channel in each other lock, said other plane being substan tially parallel to said axis;
  • each key having a face portion transversely intersecting said common plane in each of said locks in the inserted position of said key
  • said face portion being formed with a row of recesses therein, said recesses being simultaneously radially alignable with the bores of one of said locks in the associated channel while being out of radial alignment at least one of the pin means of at least one other lock, when the key is inserted in the channel of said other lock, whereby said one pin means is held in the locking position thereof when said key is inserted in the channel of said other lock.
  • a supplementary key conformingly axially insertable in each of said channels and having a face portio intersecting said common plane in each of said locks in the inserted position of said supplementary key, said face portion being formed with a plurality of groups of recesses, respective groups of said recesses being simultaneously radially alignable with the bores of at least two of said locks in the associated channels, and said recesses being out of alignment with at least one of the pin means of a third one of said locks, whereby said one pin means of said third lock is held in the locking position thereof when said supplementary key is inserted in the channel of said third lock, said groups of recesses extending in respective axial rows.
  • respective recesses in two of said axial rows being transversely aligned and jointly constituting a groove in the face portion of the supplementary key.
  • a master key conformingly axially insertable in each of said channels and having a face portion intersecting said common plane in each of said locks in the inserted position of said master key, said face portion being formed with a plurality of groups of recesses, respective groups of said recesses being simultaneously radially alignable with said bores of each lock in the associated channel, said groups of recesses extending in respective axial rows.
  • respective recesses in two of said axial rows being transversely aligned and jointly constituting a groove in. said face portion of said master key.
  • each axial row being transversely aligned with corresponding recesses in another axial row in said face portion of said master key and constituting therewith respective grooves in said face portion.
  • each inner cylinder means of said plurality of locks having a radial end face, respective ones of said locks differing in the axial spacing of said end face from the nearest one of said 6 pin means, said channel passing through said end face, FOREIGN PATENTS and cooperating abutment means on said end face and on each of said keys for limiting axial insertion of said 421,715 12/1934 Great a key into said channel.
  • FOREIGN PATENTS and cooperating abutment means on said end face and on each of said keys for limiting axial insertion of said 421,715 12/1934 Great a key into said channel.

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US467423A 1965-03-31 1965-06-28 Method of increasing the number of different locking combinations Expired - Lifetime US3349587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH441265A CH432279A (de) 1965-03-31 1965-03-31 Verfahren zur Erhöhung der Anzahl voneinander abweichender Schliessungsmöglichkeiten von Sicherheitsschlössern und Sicherheitsschloss mit Schlüssel zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3349587A true US3349587A (en) 1967-10-31

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Application Number Title Priority Date Filing Date
US467423A Expired - Lifetime US3349587A (en) 1965-03-31 1965-06-28 Method of increasing the number of different locking combinations

Country Status (6)

Country Link
US (1) US3349587A (de)
AT (1) AT268085B (de)
CH (1) CH432279A (de)
DE (1) DE1553388C3 (de)
GB (1) GB1131872A (de)
NL (1) NL139797B (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603123A (en) * 1968-11-19 1971-09-07 Best Lock Corp Pin tumbler lock
US3777520A (en) * 1972-06-20 1973-12-11 Security Tech Corp Lock assembly of the rotary cylinder type
US3974670A (en) * 1973-09-04 1976-08-17 Josef Voss Kg Turnover key and corresponding cylinder lock
US4100778A (en) * 1976-05-20 1978-07-18 Bauer Kaba Ag Sicherheits-Schliessyteme Key with transverse slots and method of making same
US4289002A (en) * 1975-09-11 1981-09-15 Bauer Kaba Ag Sicherheits-Schliessyteme Key for a cylinder lock and method for making same
FR2535376A1 (fr) * 1982-11-01 1984-05-04 Keller Ernst Procede de fabrication de cles de surete avec diverses possibilites de fermeture
US4732022A (en) * 1985-07-19 1988-03-22 Medeco Security Locks, Inc. Key for an improved twisting tumbler cylinder lock
US4932229A (en) * 1987-06-08 1990-06-12 Genakis Joseph M Cylinder lock
US4998426A (en) * 1987-06-08 1991-03-12 Genakis Joseph M Cylinder lock
WO1991010795A1 (de) * 1990-01-17 1991-07-25 Ernst Keller Schliessanlage
AU653535B2 (en) * 1991-07-02 1994-10-06 Keso Ag Locking system
US5419168A (en) * 1991-10-24 1995-05-30 Medeco Security Locks, Inc. Hierarchical cylinder lock and key system
US5485735A (en) * 1993-12-06 1996-01-23 The Eastern Company Key operated rotary plug and cylinder lock
US5513509A (en) * 1992-08-13 1996-05-07 Emhart Inc. Key for use with 5-pin and 6-pin door locks
US5531084A (en) * 1993-12-06 1996-07-02 The Eastern Company Key for rotary plug and cylinder lock, and method of forming the key
US6105404A (en) * 1998-06-30 2000-08-22 Medeco Security Locks, Inc. Squiggle keys and cylinder locks for squiggle keys
GB2382102A (en) * 2001-11-17 2003-05-21 One Lus Internat Co Ltd Lockset structure
WO2005015745A2 (en) * 2003-08-06 2005-02-17 J-Key Key decoder for high security internal/external two-track and four-track lock
US20070214850A1 (en) * 2006-03-14 2007-09-20 Min-Tsung Ma Lock assembly

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606557C2 (de) 1976-02-19 1985-02-21 DOM-Sicherheitstechnik GmbH & Co KG, 5040 Brühl Wende-Flachschlüssel für einen Schließzylinder
DE2660959C2 (de) * 1976-02-19 1987-07-09 Dom Sicherheitstechnik
DE3021334A1 (de) * 1980-06-06 1981-12-17 Ernst 8805 Richterswil Keller Anordnung zur erhoehung der anzahl voneinander abweichender schliessungsmoelichkeiten von drehzylinderschloessern
DE3245640A1 (de) * 1982-11-30 1984-05-30 Schweizerische Aluminium Ag, Chippis Scharnier
DE3378919D1 (en) * 1983-11-03 1989-02-16 Ernst Keller Method of making safety keys with locking possibilities differing from each other
US4553452A (en) * 1983-11-09 1985-11-19 Ernst Keller Method for producing security keys having closure possibilities differing from one another
EP0953699B1 (de) 1998-04-04 2001-08-08 Schlosssicherungen Gera GmbH Schliesszylinder mit zugeordnetem Flachschlüssel im variablen Stufenprofil
DE19815212A1 (de) * 1998-04-04 1999-10-21 Schlossicherungen Gera Gmbh Schließzylinder mit zugeordnetem Flachschlüssel im variablen Stufenprofil
CN112030766A (zh) * 2020-09-04 2020-12-04 中交路桥华南工程有限公司 液压自升式一体化斜拉桥提升模架
CN112160245B (zh) * 2020-09-04 2022-06-07 中交路桥华南工程有限公司 变截面塔段的安装方法
CN112459463B (zh) * 2020-11-12 2022-06-17 上海宏构建筑科技发展有限公司 一种防刮痕易拼装的铝膜板

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US834918A (en) * 1906-01-23 1906-11-06 Paul K Lindgren Cylinder-lock and key therefor.
US1163470A (en) * 1914-11-10 1915-12-07 Yale & Towne Mfg Co Cylinder-lock.
US1526516A (en) * 1923-08-21 1925-02-17 Vesdal Creations Inc Lock
GB421715A (en) * 1933-12-12 1934-12-28 Bauer Ag Improvements in or relating to safety locks
US2376389A (en) * 1941-10-21 1945-05-22 Edward A Schachinger Watchman's signal system
CH260517A (de) * 1947-12-16 1949-03-31 Ag Bauer Sicherheitsschloss mit flachem Stechschlüssel.
CH344637A (de) * 1955-12-12 1960-02-15 Keller Ernst Sicherheitsschloss mit zugehörigem Schlüssel
CH372947A (de) * 1959-06-25 1963-10-31 Keller Ernst Zylinderaggregat in einem Sicherheitsschloss

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US834918A (en) * 1906-01-23 1906-11-06 Paul K Lindgren Cylinder-lock and key therefor.
US1163470A (en) * 1914-11-10 1915-12-07 Yale & Towne Mfg Co Cylinder-lock.
US1526516A (en) * 1923-08-21 1925-02-17 Vesdal Creations Inc Lock
GB421715A (en) * 1933-12-12 1934-12-28 Bauer Ag Improvements in or relating to safety locks
US2376389A (en) * 1941-10-21 1945-05-22 Edward A Schachinger Watchman's signal system
CH260517A (de) * 1947-12-16 1949-03-31 Ag Bauer Sicherheitsschloss mit flachem Stechschlüssel.
CH344637A (de) * 1955-12-12 1960-02-15 Keller Ernst Sicherheitsschloss mit zugehörigem Schlüssel
CH372947A (de) * 1959-06-25 1963-10-31 Keller Ernst Zylinderaggregat in einem Sicherheitsschloss

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603123A (en) * 1968-11-19 1971-09-07 Best Lock Corp Pin tumbler lock
US3777520A (en) * 1972-06-20 1973-12-11 Security Tech Corp Lock assembly of the rotary cylinder type
US3974670A (en) * 1973-09-04 1976-08-17 Josef Voss Kg Turnover key and corresponding cylinder lock
US4289002A (en) * 1975-09-11 1981-09-15 Bauer Kaba Ag Sicherheits-Schliessyteme Key for a cylinder lock and method for making same
US4100778A (en) * 1976-05-20 1978-07-18 Bauer Kaba Ag Sicherheits-Schliessyteme Key with transverse slots and method of making same
FR2535376A1 (fr) * 1982-11-01 1984-05-04 Keller Ernst Procede de fabrication de cles de surete avec diverses possibilites de fermeture
US4732022A (en) * 1985-07-19 1988-03-22 Medeco Security Locks, Inc. Key for an improved twisting tumbler cylinder lock
US4932229A (en) * 1987-06-08 1990-06-12 Genakis Joseph M Cylinder lock
US4998426A (en) * 1987-06-08 1991-03-12 Genakis Joseph M Cylinder lock
US5349830A (en) * 1990-01-17 1994-09-27 Ernst Keller Lock system
WO1991010795A1 (de) * 1990-01-17 1991-07-25 Ernst Keller Schliessanlage
AU653535B2 (en) * 1991-07-02 1994-10-06 Keso Ag Locking system
US5570601A (en) * 1991-10-24 1996-11-05 Medeco Security Locks, Inc. Hierarchical cylinder lock and key system
US5419168A (en) * 1991-10-24 1995-05-30 Medeco Security Locks, Inc. Hierarchical cylinder lock and key system
US5513509A (en) * 1992-08-13 1996-05-07 Emhart Inc. Key for use with 5-pin and 6-pin door locks
US5485735A (en) * 1993-12-06 1996-01-23 The Eastern Company Key operated rotary plug and cylinder lock
US5531084A (en) * 1993-12-06 1996-07-02 The Eastern Company Key for rotary plug and cylinder lock, and method of forming the key
US6105404A (en) * 1998-06-30 2000-08-22 Medeco Security Locks, Inc. Squiggle keys and cylinder locks for squiggle keys
GB2382102A (en) * 2001-11-17 2003-05-21 One Lus Internat Co Ltd Lockset structure
GB2382102B (en) * 2001-11-17 2004-03-03 One Lus Internat Co Ltd Lockset structure
WO2005015745A2 (en) * 2003-08-06 2005-02-17 J-Key Key decoder for high security internal/external two-track and four-track lock
WO2005015745A3 (en) * 2003-08-06 2005-08-11 J Key Key decoder for high security internal/external two-track and four-track lock
US20070214850A1 (en) * 2006-03-14 2007-09-20 Min-Tsung Ma Lock assembly

Also Published As

Publication number Publication date
NL139797B (nl) 1973-09-17
DE1553388C3 (de) 1975-05-22
AT268085B (de) 1969-01-27
NL6604312A (de) 1966-10-03
GB1131872A (en) 1968-10-30
DE1553388A1 (de) 1970-12-10
DE1553388B2 (de) 1973-09-27
CH432279A (de) 1967-03-15

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