US3464243A - Cylinder lock - Google Patents

Cylinder lock Download PDF

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Publication number
US3464243A
US3464243A US649701A US3464243DA US3464243A US 3464243 A US3464243 A US 3464243A US 649701 A US649701 A US 649701A US 3464243D A US3464243D A US 3464243DA US 3464243 A US3464243 A US 3464243A
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US
United States
Prior art keywords
plug
plugs
rotation
driver
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
US649701A
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English (en)
Inventor
Paul Maddison Hawkins
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.)
General Alarm Corp
Original Assignee
General Alarm Corp
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 General Alarm Corp filed Critical General Alarm Corp
Application granted granted Critical
Publication of US3464243A publication Critical patent/US3464243A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
    • E05B27/006—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further rotation of the rotor
    • E05B27/0064—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance whereby a small rotation without the correct key blocks further rotation of the rotor whereby the rotor is irreversibly blocked or can only be moved back with an authorized tool or key
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/06—Electric alarm locks
    • 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
    • Y10T70/7689—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
    • Y10T70/7915—Tampering prevention or attack defeating
    • Y10T70/7932—Anti-pick
    • Y10T70/7944—Guard tumbler
    • 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
    • Y10T70/7949—Yielding or frangible connections

Definitions

  • This invention relates to a lock mechanism, and more Patented Sept; 2, 1969 be provided to resist return of the second plug to its normal position after a preselected amount of rotation. In this way, that plug may be utilized to operate an alarm upon attempted unauthorized manipulation of the lock, about which more will later be said.
  • a key slot is provided in the first plug so that the vari.
  • an important feature of the present invention resides in apparatus of the class describedcomprising; a cylinder, a plug rotatably mounted in the cylinder, standard pin tumbler and driver means normally securing the plug against rotation relatively to the cylinder, at key slot in the plug for reception of means adjusting the pin tumbler and driver means to permit such relative rotation, and means allowing limited rotation only of the plug relatively to the cylinder upon unauthorized manipulation of the standard pin tumbler and driver means.
  • a second plug also mounted for rotation in the cylinder and adjacent to the first plug, the plugs having normally opposed bores in which are positioned what I shall refer to as non-standard tumbler and driver assembly means.
  • These assembly means include a pin tumbler, a driver and spring means, the latter urging the tumbler and driver into position to avoid establishment of an uninterrupted shear line between the plugs.
  • the pin and driver assembly means may be so constructed and arranged relatively to the bores that the second plug is free to rotate a limited distance in either annular direction upon rotation of the first plug when the assembly means are in normal position, and, in
  • Detent means such as a socket and spring loaded ball may act between the cylinder and plug tending to resist such annular movement.
  • similar detent means '-may sembly means may be set to establish an uninterrupted shear line between the plugs, and between the respective tumblers and drivers in the usual way, so that the key slotted'plug is free to rotate independently of the other plug by the use of an authorized key.
  • the key slotted plug may thus be arranged to operate a door bolt for instance.
  • the plugs are formed to interfere with one another when the extent of limited rotation is reached.
  • one of the plugs may be formed witharecess and the other with a projection extending into the recess, the recess and projection being constructed and arranged to interfere at a preselected annular position of rotation thus to effect a positive limit of such rotation.
  • the parts comprising the tumbler and driver assemblies be of a size that the tumbler and driver, when bottomed under the influence of their respective spring, are both contained within their respective bore in one of the plugs and do not intersect the shear line between the plugs.
  • the spring itself, in such case, does intersect the shear line and affords a toggle action when the plugs are rotated to the position of limited rotation.
  • the tumblers and drivers may be so dimensioned that, when bottomed, the drivers extend through the shear line.
  • I provide at least one pin tumbler and driver assembly of the standard type, i.e., a pin, a driver and a spring dis- ..posed in cooperating bore means in the key slotted plug and in the cylinder. These bore means are dimensioned to afford the usual clearance to the pin and driver to obviate play in the key slotted plug.
  • FIG. 1 is a vertical cross-sectional view of a cylinder lock in accordance with the present invention and illustrating a bolt operating shaft controlled by the first plug, a switch and switch operating mechanism controlled by the second plug and a key setting the various tumbler and driver assemblies to normal entry position;
  • FIG. 2 is an elevational view taken along the lines 2--2 of FIG. 1;
  • FIG. 3 is a partial elevational view illustrating a switch and switch operating elements
  • FIG. 4 is a cross-sectional view taken along the lines 4-4 of FIG. 1;
  • FIG. 5 is a view similar to FIG. 4, but illustrating the parts in position of limited rotation
  • FIG. 6 is a view similar to FIG. 2, but illustrating the parts in position of limited rotation.
  • FIG. 7 is a view similar to FIG. 6, but illustrating another embodiment of the invention.
  • FIG. 1 there is shown a cylinder 10 having a pair of plugs 11 and 12 mounted for rotation therein.
  • the plugs are shown as being equal in diameter and mounted adjacent one another with their longitudinal axes parallel; but the uppermost plug 11 is shorter in length than is the plug 12 and does not extend to the front face of the cylinder 10.
  • I A standard pin tumbler and driver assembly 14 is shown positioned in cooperating bores 15 and 15ain the cylinder 10 and plug 12, respectively. This assembly comand that which intersects the shear line, is closely coiled tension sprifigrora' purpose later to be'described.”
  • the plug 12 is a key slotted as at for reception of a key 23 which adjusts the standard and nonstandard assemblies so,that the shear line between the plugs also passcsj betweenthe drivers and tumblers of all the assemblies .whereupon the plug 12is free tor'otateind ependentlyof the .plug "11.
  • a shaft 26 rotates with the plug 12 to operate a conventional door bolt or the like?
  • -I extend the plugs somewhat beyondtheinnerend of the cylinder. 10 .(FIG. .1) andQasshown in FIG. 2, form an arcuate recess-27in thC1OWf marginal region of the upper plug 11.
  • the lower plug 12 is milled10ut as at 28 and has an upstanding projection 29 in its corresponding region so arranged that it fits"intothe' medianarea of the recess 27 when the plugs are in normal position.
  • thearcuate recess 27 is dimensionedso as not to interrare withrotation of the plug 12 when an uninterrupted shear line isetfected between the plugs, so that the plug 12 can'rotate independently of the plug 11.
  • the closely coiled portion of the spring means interrupts the shear line thus giving a snap or toggle effect to the rotation.
  • Such rotation is limited by interference between the outer surface of the plug 11 and the side of the milled portion of plug 12, as shown in FIG. 6 at, 30.
  • nonstandard pin tumbler and driver assemblies such as that designated by the reference numeral 20 are shown behind and in line with the standard assembly 14, these nonstandard assemblies comprising tumblers 21, drivers 22 having inverted mushroom-like configurations, and spring means 24 urging the tumblers and drivers to, bottom in the lowermost, of corresponding bores 11a and 12a of the plugs 11 and 12, respectively.
  • the plug 11 is also bored as at 39 (FIGS. 1, 2 and 6) for receipt of a ball 40 and spring 41, the latter normally urging the ball against the surface of the cylinder 10.
  • the inner surface of the cylinder however has a pair of recesses 42, one on each side of the vertical center line through the plug 11 and located toseat the ball 40, upon completion of the limited rotation alreadyfdiscussed, to act as a detent restraining return of the plug 11 to its normal position.
  • bores 11b in plug ,11 are of oversize diameter relatively tospring's 44 and drivers 45, thelatter being of a length normally .to extend across the shear line between the plugs. 'In'this ,way, a limited degree of rotation of the plugs is permitted upon attempted rotation of the ,plug 12 while the shear line is interrupted by at least one driver. Such rotation is limited due to eventual interference by the driver with the sides of the corresponding bores in the plugs 11 and 12 and, if desired, the lower portion of the bores 11b may be formed with annular ribs 46 for accurate control.
  • detent means may be provided normally to maintain the plug 11 in neutral position.
  • a conical recess 47 is formed in the side of the plug 11 and a ball and spring assembly 49 are positioned in a bore 50 in the cylinder 10, the spring urging the ball to seat in the recess 47 under a light force.
  • a cup-shaped cap 51 is press fit or otherwise secured over the front portion of the cylinder and is formed of drill-proof metal to prevent drilling through the cylinder for insertion of a shim to support the respective assemblies in picked condition as others are manipulated; and this cap covers the shear line at the front of the cylinder.
  • I also provide means associated with the lock mechanism whereby an alarm is given when unauthorized entry is attempted and without such entry having been achieved.
  • Apparatus of the class described comprising: a cylinder, first and second plugs rotatably mounted in said cylinder in side by side relation, means defining pairs of normally opposed bores in said plugs, a pin tumbler and driver assembly disposed in each of said pairs of opposed bores normally to prevent establishment of an uninterrupted shear line between said plugs, a key slot in said first plug for reception of means adjusting said tumbler and driver assemblies to establish an uninterrupted shear line between said plugs whereby said first plug may be rotated independently of said second plug, at least one of said pin tumbler and driver assemblies cooperating with said plugs to transmit forces etfecting rotation of said first plug to said second plug to effect counter-rotation thereof when said shear line is interrupted by said force transmitting assembly and means limiting said last-mentioned rotation and counter-rotation.
  • Apparatus according to claim 2 wherein said last mentioned means includes a spring loaded ball and groove detent.
  • Apparatus of the class described comprising: a cylinder, first and second plugs rotatably mounted in said cylinder in side by side relation, means defining pairs of normally opposed bores in said plugs, a nonstandard pin tumbler and driver assembly disposed in each of said pair of opposed bores normally to prevent establishment of an uninterrupted shear line between said plugs, a key slot in said first plug for reception of means adjusting said tumbler and driver assemblies to establish an uninterrupted shear line between said plugs whereby said first plug may be rotated independently of said second plug, at least one of said pin tumbler and driver assemblies cooperating with said plugs to transmit forces effecting rotation of said first plug to said second plug to effect counter-rotation thereof when said shear line is interrupted by said force transmitting assembly, means limiting said last-mentioned rotation and counter-rotation, and means defining normally opposed bores in said cylinder and said first plug, a standard pin tumbler and driver assembly in each such pair of opposed bores normally preventing establishment of an uninterrupted shear line between said cylinder and first plug, said
  • said plugs each have a plurality of said bores and said nonstandard tumbler and driver assembly means comprise a tumbler, driver and spring means in each of said opposed bores, the diameter of the bores in said second plug being larger than that of the bores in said key slotted plug.
  • Apparatus of the class described comprising: a cylinder, first and second plugs rotatably mounted in said cylinder in side by side relation, means defining normally opposed bores in said plugs, a pin tumbler and driver assembly disposed in each pair of said opposed bores normally to prevent establishment of an uninterrupted shear line between said plugs, a key slot in said first plug for reception of means adjusting said tumbler and driver assemblies to establish an uninterrupted shear line between said plugs whereby said first plug may be rotated independently of said second plug, bolt operating means associated with said first plug, said tumbler and driver assemblies cooperating with said bores to permit limited rotation of said plugs when said shear line is interrupted by at least one of said assemblies, said plugs being formed to interfere with one another when the extent of such limited rotation is reached.
  • pin and tumbler assemblies comprise each a pin and a driver normally disposed in a respective bore of one of said plugs and a spring disposed in said bore and its opposed bore in the other of said plugs and urging the pin and tumbler to bottoming position whereby said spring normally intersects said shear line and afford a toggle action upon rotation of said second plug.
  • one of said plugs is recessed and the other is formed with a projection extending into said recess, said recess and projection being constructed and arranged to interfere at a preselected annular position of rotation thus to effect a positive limit of such rotation.
  • switch operating means are associated with said second plug and operate to actuate an alarm switch when said second plug is rotated such limited amount.
  • I 16 Apparatus of the class described comprising: a cylinder, first and second plugs rotatably mounted in said cylinder inside by side relation, means defining normally opposed bores in said plugs, a pin tumbler and driver assembly disposed in each pair of .said opposed bores, said assemblies each including a pin tumbler and a driver, the latter normally seated on its respective pin tumbler in the respective bore in said first plug and extending into its respective bore in said second plug, saidbores in said second plug being of a diameter larger than that of said drivers to permitlimited relatively counter-rotation of said plugs; a key slot invsaid first plug for reception of means adjusting said-tumbler anddriver assemblies to establish an uninterrupted shear line between saidtplugs whereby said first plug may be rotated independently of said secondplug, and bolt operating means associated with saidfirst. plug. 7 y
  • Apparatus according to claim 16 wherein means define normally opposed bore means in said cylinder and first plug, a-pinaand driver are disposed in said bore means, and a spring urges same into normal position wherein said driver extends into the bore means of both of said plugs, said bore means in both plugs, afiording a close fit for said driver.
  • switch operating means are associated with said second plug and operate to actuate an alarm switch when saidsecon d plug is rotated such limited' amount.

Landscapes

  • Lock And Its Accessories (AREA)
  • Burglar Alarm Systems (AREA)
US649701A 1967-06-28 1967-06-28 Cylinder lock Expired - Lifetime US3464243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64970167A 1967-06-28 1967-06-28

Publications (1)

Publication Number Publication Date
US3464243A true US3464243A (en) 1969-09-02

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Application Number Title Priority Date Filing Date
US649701A Expired - Lifetime US3464243A (en) 1967-06-28 1967-06-28 Cylinder lock

Country Status (6)

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US (1) US3464243A (en:Method)
BE (1) BE717237A (en:Method)
CH (1) CH519083A (en:Method)
DE (1) DE1703688A1 (en:Method)
FR (1) FR1581004A (en:Method)
GB (1) GB1193760A (en:Method)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385049A1 (de) * 1989-03-01 1990-09-05 Schloss- & Beschlägefabrik AG Türwächter
US5101648A (en) * 1988-08-27 1992-04-07 Bauer Kaba Ag Lock cylinder and key with associated security element
US5150592A (en) * 1991-12-02 1992-09-29 Taiwan Fu Hsing Industry Co., Ltd. Locking device for an auxiliary lock
US5507163A (en) * 1994-04-04 1996-04-16 Juang; Wen-Jang Interchangeable lock core structure
US20080314105A1 (en) * 2007-06-20 2008-12-25 Kaba Ilco Corp. Pin tumbler key lock assembly
CN101915017A (zh) * 2010-07-13 2010-12-15 丁汉云 一种延时锁定方法及延时锁定装置和防盗锁
CN104948009A (zh) * 2014-03-24 2015-09-30 黄仕德 一种带防护锁体的防盗锁辅助装置
US9394723B1 (en) * 2013-01-22 2016-07-19 Amazon Technologies, Inc. Lock that mechanically detects tampering
US9567770B1 (en) * 2013-01-22 2017-02-14 Amazon Technologies, Inc. Lock that electronically detects tampering
CN112096181A (zh) * 2020-10-14 2020-12-18 广东科徕尼智能科技有限公司 锁具

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104196340A (zh) * 2014-08-16 2014-12-10 重庆倍精科技研发有限公司 异步报警机电混合隐形防盗锁
CN104196352A (zh) * 2014-08-17 2014-12-10 重庆倍精科技研发有限公司 外锁机电混合报警隐形防盗锁
CN104196351A (zh) * 2014-08-17 2014-12-10 重庆倍精科技研发有限公司 外锁异步机电混合报警隐形防盗锁
CN104196353A (zh) * 2014-08-18 2014-12-10 重庆倍精科技研发有限公司 外锁机电混合隐形报警防盗锁
CN104196354A (zh) * 2014-08-18 2014-12-10 重庆倍精科技研发有限公司 异步报警机电混合隐形防盗锁
CN104196341A (zh) * 2014-08-18 2014-12-10 重庆倍精科技研发有限公司 异步外锁机电混合报警隐形防盗锁
CN104265075A (zh) * 2014-08-20 2015-01-07 重庆倍精科技研发有限公司 互锁隐形异步机电混合报警防盗锁
CN104213766A (zh) * 2014-08-20 2014-12-17 重庆倍精科技研发有限公司 外锁隐形机电混合报警防盗锁
CN104213771A (zh) * 2014-08-20 2014-12-17 重庆倍精科技研发有限公司 异步外锁机隐形电混合报警防盗锁
CN104234524A (zh) * 2014-08-21 2014-12-24 重庆倍精科技研发有限公司 隐形锁止机电混合报警防盗锁
CN104234531A (zh) * 2014-08-21 2014-12-24 重庆倍精科技研发有限公司 异步隐形防盗报警机电混合锁
CN104234530A (zh) * 2014-08-21 2014-12-24 重庆倍精科技研发有限公司 互锁隐形异步防盗机电混合报警锁

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1060769A (en) * 1911-10-18 1913-05-06 Charles F Kohlberger Pin-tumbler mechanism.
US1088648A (en) * 1912-09-30 1914-02-24 Thomas N Birch Circuit-controlling lock.
US2870622A (en) * 1954-01-12 1959-01-27 Ericsson Telefon Ab L M Cylinder lock
US3319443A (en) * 1965-03-22 1967-05-16 Yale & Towne G M B H Lock cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1060769A (en) * 1911-10-18 1913-05-06 Charles F Kohlberger Pin-tumbler mechanism.
US1088648A (en) * 1912-09-30 1914-02-24 Thomas N Birch Circuit-controlling lock.
US2870622A (en) * 1954-01-12 1959-01-27 Ericsson Telefon Ab L M Cylinder lock
US3319443A (en) * 1965-03-22 1967-05-16 Yale & Towne G M B H Lock cylinder

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101648A (en) * 1988-08-27 1992-04-07 Bauer Kaba Ag Lock cylinder and key with associated security element
EP0385049A1 (de) * 1989-03-01 1990-09-05 Schloss- & Beschlägefabrik AG Türwächter
US5150592A (en) * 1991-12-02 1992-09-29 Taiwan Fu Hsing Industry Co., Ltd. Locking device for an auxiliary lock
US5507163A (en) * 1994-04-04 1996-04-16 Juang; Wen-Jang Interchangeable lock core structure
US20080314105A1 (en) * 2007-06-20 2008-12-25 Kaba Ilco Corp. Pin tumbler key lock assembly
CN101915017B (zh) * 2010-07-13 2013-04-24 丁汉云 一种延时锁定方法及延时锁定装置和防盗锁
CN101915017A (zh) * 2010-07-13 2010-12-15 丁汉云 一种延时锁定方法及延时锁定装置和防盗锁
US9394723B1 (en) * 2013-01-22 2016-07-19 Amazon Technologies, Inc. Lock that mechanically detects tampering
US9567770B1 (en) * 2013-01-22 2017-02-14 Amazon Technologies, Inc. Lock that electronically detects tampering
US10100553B1 (en) 2013-01-22 2018-10-16 Amazon Technologies, Inc. Lock that mechanically detects tampering
CN104948009A (zh) * 2014-03-24 2015-09-30 黄仕德 一种带防护锁体的防盗锁辅助装置
CN112096181A (zh) * 2020-10-14 2020-12-18 广东科徕尼智能科技有限公司 锁具
CN112096181B (zh) * 2020-10-14 2023-11-10 广东好太太智能家居有限公司 锁具

Also Published As

Publication number Publication date
FR1581004A (en:Method) 1969-09-12
DE1703688A1 (de) 1972-03-23
CH519083A (fr) 1972-02-15
BE717237A (en:Method) 1968-12-27
GB1193760A (en) 1970-06-03

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