US3578371A - Disc tumbler cylinder and key for a lock - Google Patents

Disc tumbler cylinder and key for a lock Download PDF

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Publication number
US3578371A
US3578371A US797733A US3578371DA US3578371A US 3578371 A US3578371 A US 3578371A US 797733 A US797733 A US 797733A US 3578371D A US3578371D A US 3578371DA US 3578371 A US3578371 A US 3578371A
Authority
US
United States
Prior art keywords
tumblers
key
housing
tumbler
recess
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
US797733A
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English (en)
Inventor
Ernst Keller
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3578371A publication Critical patent/US3578371A/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
    • E05B29/00—Cylinder locks and other locks with plate tumblers which 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
    • Y10T70/7588—Rotary plug
    • Y10T70/7593—Sliding tumblers
    • Y10T70/7599—Transverse of 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
    • Y10T70/7695—Plate
    • 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
    • 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
    • Y10T70/7915—Tampering prevention or attack defeating
    • Y10T70/7932—Anti-pick

Definitions

  • the lock plug has several slots, each holding three disc tumblers spring biased into locking positions, two of which tumblers are moved up and the remaining one down by the key and its camming shoulders to release the rotatable plug.
  • the invention relates to a lock and therefor the combination of a disc tumbler cylinder and a key.
  • Conventional cylinders of this kind are not very secure against being unlocked by unauthorized persons who lack the right key.
  • a sufficiently skillful person can contact the individual tumblers and, by revolving the plug through the lateral play of the tumblers move the tumblers one by one into their unlocking position, thereby releasing the plug, which is now free to turn.
  • the purpose of the invention is to produce a disc tumbler cylinder of the kind described and which is virtually pickproof.
  • the invention fundamentally comprises in combination a disc tumbler cylinder and a key, and includes a revolving plug, a plurality of movable disc tumblers in the plug and moved by the key to release the plug, an outer cylinder cooperating with the tumblers in their locking positions, an opening in each tumbler to form a keyway, and a web incorporated by the key.
  • the novelty of the invention relates to a plurality of slots in the plug, each slot holding a set of at least three tumblers free to slide therein between locked and unlocked positions for the plug, and camming means incorporated on at least one face of the key web for moving at least some of the tumblers to release the plug, and for moving at least one of these tumblers in a direction opposite to that in which the other tumblers of the same set move.
  • FIG. 1 is a longitudinal section of the cylinder of the invention, with the key inserted;
  • FIG. 2 is a longitudinal section corresponding to FIG. I, but with the key removed and the tumblers in their locking positions;
  • FIG. 3 is a side view of the plug without its tumblers
  • FIG. 4 is a cross section taken along line IV-lV of FIG. 1;
  • FIG. 5 is a perspective view of some of the tumblers, in their locking positions
  • FIG. 6 is a perspective view of some of the tumblers, in their unlocking position
  • FIG. 7 is a side view of the web of the key.
  • FIGS. 8 and 9 are sectional views respectively taken along lines VIII-VIII and IX-IX of FIG. 7.
  • the disc tumbler cylinder as illustrated in FIGS. 1, 2, and 4, comprises a cylinder 1 and a plug 2 mounted therein to freely rotate.
  • the plug embodies a keyway 3 and a series of slots 4 that extend vertically to the keyway.
  • Each slot holds a set of three disc tumblers 5, 6, and 7, which are free to move up and down in the slot.
  • the tumblers in their locking positions, project into lengthwise slots 9 and 10 in the cylinder 1 and thereby prevent the plug 2 from turning in the cylinder.
  • Springs 11 and 12 press the tumblers 5, 6, and 7 into their locking positions.
  • springs are arranged in recesses 44 next to the slots 4 in the plug 2 and act on toes 5a, 6a, and that are incorporated in the sides, and project at right angles to the planes, of the tumblers.
  • a respective spring 11 is compressed between a toe 5a of the last tumbler, 5, of one set and the toe 7a of the adjacent, first tumbler, 7, of the next set.
  • the middle tumbler 6 of each set is pressed into its locking position by a separate spring 12, which is compressed between the toe 6a and the plug 2.
  • respective springs 12 act on the first tumbler, 7, of the first set and the last tumbler, 5, of the last set.
  • the tumbler 5 of each set projects into the slot 9 and the tumblers 6 and 7 into the slot 10. To lock and unlock, some tumblers, therefore, are moved up while others are moved down.
  • the key 8 which is shown separately in FIGS. 7 to 9, has a web 13, each face of which incorporates a camming shoulder I4 or 15 having a shape that, with respect to the longitudinal center line of the web 13, is the opposite of the shape of the other shoulder, so that the key, irrespective of which web face is right and which left, can be inserted into the keyway.
  • These camming shoulders are advantageously so made on a duplicating milling machine that the shoulders, as shown in FIG. 7, are composed of straight sections.
  • the tumblers of each set can be so constructed, for example, that the tumbler 7 is positively operated only by the key web 13, the tumbler 6 by the camming shoulder 15, and the tumbler 5 by the camming shoulder 14.
  • the disc tumbler 7 embodies a rectangular opening 16 having a height somewhat greater than the height X of the key web 13 and a width somewhat greater than the total width Y of the key.
  • the openings 17 and 18 of the disc tumblers 6 and 5 comprise lateral recesses 17a and 18a, which are engaged by the camming shoulders 14 and 15.
  • the web 13 pushes the tumblers 7 to their unlocking position while it moves the tumblers 5 and 6 to intermediate positions. These latter tumblers are moved to their final, unlocking position by the shoulders l4 and 15.
  • the number of tumblers comprising a set in a slot 4 can be greater than three.
  • a locking device comprising a lock and key, said lock comprising a housing, a cylindrical plug rotatably supported in said housing, said plug having a longitudinal channel adapted for receiving said key, a plurality of tumblers slidably supported in said plug transversely of said channel, and means for biasing said tumblers outwardly of said plug, said housing having a recess adapted for receiving said tumblers biased outwardly of said plug to prevent said plug from rotating, each of said tumblers having an opening adapted for receiving said key, said key including first means for passing through each said opening in each of said tumblers as said key is inserted in said plug, said first means of said key being engageable with a first of said tumblers in opposition of said biasing means to partially withdraw said first tumbler from said recess in said housing to a first position of partial withdrawal, said first means of said key being engageable with a second of said tumblers adjacent said first tumbler in opposition of said biasing means to fully withdraw said second tumbler from said recess in said housing while
  • a locking device as claimed in claim 1 wherein said housing is provided with a further recess opposing the first-named recess, at least two of said tumblers being slidable in opposite directions relative to one another each into a respective recess in said housing.
  • a locking device as claimed in including three said tumblers, two of said tumblers being slidable to one of said recesses, the other tumbler being slidable to the other recess.
  • a locking device as claimed in claim 6 including at least two adjacent groups of said three tumblers, each group including two outermost tumblers and a middle tumbler interposed between said outermost tumblers, said first spring being interposed between one outermost tumbler of one group and the other outermost member of the adjacent group, said second spring being interposed between said housing and said middle tumbler.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
US797733A 1968-02-09 1969-02-10 Disc tumbler cylinder and key for a lock Expired - Lifetime US3578371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH192968A CH488914A (de) 1968-02-09 1968-02-09 Zylinderschloss mit Stechschlüssel und plattenförmigen Zuhaltungen

Publications (1)

Publication Number Publication Date
US3578371A true US3578371A (en) 1971-05-11

Family

ID=4221883

Family Applications (1)

Application Number Title Priority Date Filing Date
US797733A Expired - Lifetime US3578371A (en) 1968-02-09 1969-02-10 Disc tumbler cylinder and key for a lock

Country Status (8)

Country Link
US (1) US3578371A (enrdf_load_stackoverflow)
JP (1) JPS4921640B1 (enrdf_load_stackoverflow)
AT (1) AT280089B (enrdf_load_stackoverflow)
CH (1) CH488914A (enrdf_load_stackoverflow)
DE (1) DE1905859C3 (enrdf_load_stackoverflow)
FR (1) FR2001684A1 (enrdf_load_stackoverflow)
GB (1) GB1260511A (enrdf_load_stackoverflow)
SE (1) SE355042B (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735614A (en) * 1971-12-14 1973-05-29 Volper E Keller Cylinder lock
US4490998A (en) * 1981-06-11 1985-01-01 John Wellekens Tamper-resistant lock assembly
US4561270A (en) * 1983-12-07 1985-12-31 Briggs & Stratton Corp. Key operated shallow penetration lock
WO2005031093A1 (es) * 2003-09-30 2005-04-07 Ojmar, S.A. Cilindro de borjas amaestrado, y llave amaestrada correspondiente
US20080178647A1 (en) * 2005-02-11 2008-07-31 Valeo Securite Habitacle Rotary Cylinder Lock Which Can Be Actuated with a Multi-Groove Key
US20080289378A1 (en) * 2007-05-21 2008-11-27 Cheng-Ju Yang Wafer-type tumbler cylinder and key
US20100018267A1 (en) * 2008-05-07 2010-01-28 Chao-Ming Huang Rekeyable lock cylinder, plug assembly of the same and method for rekeying the same
CN1944927B (zh) * 2005-10-05 2011-04-27 株式会社东海理化电机制作所 圆筒锁及钥匙
US20110226027A1 (en) * 2008-05-07 2011-09-22 Chao-Ming Huang Rekeyable lock cylinder
US9856677B1 (en) * 2016-12-15 2018-01-02 Xiamen Make Security Technology Co., Ltd. Cylinder lock assembly
US10017958B1 (en) * 2014-05-12 2018-07-10 Robert Frydrych Locks inserts and lock assemblies using them

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444566A1 (de) * 1984-12-06 1986-06-12 Geco GmbH Sicherungstechnik, 2084 Rellingen Zylinderschloss mit drehbaren zuhaltungsscheiben
JPH0721776Y2 (ja) * 1989-11-10 1995-05-17 株式会社東海理化電機製作所 シリンダ錠
PL169785B1 (pl) * 1990-05-21 1996-08-30 Arx Pty Ltd Zamek bebenkowy PL PL
AU652160C (en) * 1990-05-21 2002-02-07 Seija Aulikki Mather A lock barrel assembly and key therefor
RU2118434C1 (ru) * 1996-04-30 1998-08-27 Борис Константинович Давыдов Способ кодирования и декодирования цилиндрового механизма замка и цилиндровый механизм замка
JP4720496B2 (ja) * 2005-12-27 2011-07-13 オムロン株式会社 シリンダ錠
JP5555119B2 (ja) * 2010-09-30 2014-07-23 株式会社五味製作所 シリンダー錠

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598749C (de) * 1932-03-13 1934-06-19 Francesco Perino Fa Zylinderschloss mit Blattzuhaltungen, welche bei der Verdrehung eines doppelbaertigen Schluessels in die Offenstellung gebracht werden
US1964963A (en) * 1933-01-16 1934-07-03 Chicago Lock Co Lock
US2035181A (en) * 1934-04-14 1936-03-24 Dudley Lock Corp Lock
US2047966A (en) * 1933-11-03 1936-07-21 Briggs & Stratton Corp Lock
US2079628A (en) * 1935-12-11 1937-05-11 Automatic Musical Instr Co Lock plug construction
US2123940A (en) * 1936-02-29 1938-07-19 Raymond K Gray Cylinder lock
US2157142A (en) * 1934-07-09 1939-05-09 Automatic Instr Company Lock key
US2330929A (en) * 1942-02-25 1943-10-05 Chicago Lock Co Plate tumbler lock

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598749C (de) * 1932-03-13 1934-06-19 Francesco Perino Fa Zylinderschloss mit Blattzuhaltungen, welche bei der Verdrehung eines doppelbaertigen Schluessels in die Offenstellung gebracht werden
US1964963A (en) * 1933-01-16 1934-07-03 Chicago Lock Co Lock
US2047966A (en) * 1933-11-03 1936-07-21 Briggs & Stratton Corp Lock
US2035181A (en) * 1934-04-14 1936-03-24 Dudley Lock Corp Lock
US2157142A (en) * 1934-07-09 1939-05-09 Automatic Instr Company Lock key
US2079628A (en) * 1935-12-11 1937-05-11 Automatic Musical Instr Co Lock plug construction
US2123940A (en) * 1936-02-29 1938-07-19 Raymond K Gray Cylinder lock
US2330929A (en) * 1942-02-25 1943-10-05 Chicago Lock Co Plate tumbler lock

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735614A (en) * 1971-12-14 1973-05-29 Volper E Keller Cylinder lock
US4490998A (en) * 1981-06-11 1985-01-01 John Wellekens Tamper-resistant lock assembly
US4561270A (en) * 1983-12-07 1985-12-31 Briggs & Stratton Corp. Key operated shallow penetration lock
WO2005031093A1 (es) * 2003-09-30 2005-04-07 Ojmar, S.A. Cilindro de borjas amaestrado, y llave amaestrada correspondiente
ES2234415A1 (es) * 2003-09-30 2005-06-16 Ojmar, S.A. Cilindro de borjas amaestrado y llave amaestrada correspondiente.
ES2234415B2 (es) * 2003-09-30 2006-01-01 Ojmar, S.A. Cilindro de borjas amaestrado y llave amaestrada correspondiente.
US20060201216A1 (en) * 2003-09-30 2006-09-14 Gil Benito S Master-keyed cylinder comprising tumblers and corresponding master key
US7240525B2 (en) 2003-09-30 2007-07-10 Ojmar, S.A. Master-keyed cylinder comprising tumblers and corresponding master key
US20080178647A1 (en) * 2005-02-11 2008-07-31 Valeo Securite Habitacle Rotary Cylinder Lock Which Can Be Actuated with a Multi-Groove Key
CN1944927B (zh) * 2005-10-05 2011-04-27 株式会社东海理化电机制作所 圆筒锁及钥匙
US20080289378A1 (en) * 2007-05-21 2008-11-27 Cheng-Ju Yang Wafer-type tumbler cylinder and key
US7530246B2 (en) * 2007-05-21 2009-05-12 Cheng-Ju Yang Wafer-type tumbler cylinder and key
US20100018267A1 (en) * 2008-05-07 2010-01-28 Chao-Ming Huang Rekeyable lock cylinder, plug assembly of the same and method for rekeying the same
US7980106B2 (en) * 2008-05-07 2011-07-19 Taiwan Fu Hsing Industrial Co., Ltd. Rekeyable lock cylinder, plug assembly of the same and method for rekeying the same
US20110226027A1 (en) * 2008-05-07 2011-09-22 Chao-Ming Huang Rekeyable lock cylinder
US8448484B2 (en) 2008-05-07 2013-05-28 Taiwan Fu Hsing Industrial Co., Ltd. Rekeyable lock cylinder
US10017958B1 (en) * 2014-05-12 2018-07-10 Robert Frydrych Locks inserts and lock assemblies using them
US9856677B1 (en) * 2016-12-15 2018-01-02 Xiamen Make Security Technology Co., Ltd. Cylinder lock assembly

Also Published As

Publication number Publication date
GB1260511A (en) 1972-01-19
JPS4921640B1 (enrdf_load_stackoverflow) 1974-06-03
AT280089B (de) 1970-03-25
DE1905859B2 (de) 1978-06-01
DE1905859C3 (de) 1979-02-01
FR2001684A1 (enrdf_load_stackoverflow) 1969-09-26
SE355042B (enrdf_load_stackoverflow) 1973-04-02
DE1905859A1 (de) 1969-09-11
CH488914A (de) 1970-04-15

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