US3855829A - Cylinder lock - Google Patents

Cylinder lock Download PDF

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Publication number
US3855829A
US3855829A US00361109A US36110973A US3855829A US 3855829 A US3855829 A US 3855829A US 00361109 A US00361109 A US 00361109A US 36110973 A US36110973 A US 36110973A US 3855829 A US3855829 A US 3855829A
Authority
US
United States
Prior art keywords
key
cylinder
strips
lock
plug member
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
US00361109A
Other languages
English (en)
Inventor
P Lipschutz
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.)
Valeo Neiman SA
Original Assignee
Societe dExploitation des Brevets Neiman SA
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 Societe dExploitation des Brevets Neiman SA filed Critical Societe dExploitation des Brevets Neiman SA
Priority to US05/472,022 priority Critical patent/US3988911A/en
Application granted granted Critical
Publication of US3855829A publication Critical patent/US3855829A/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
    • 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
    • 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

Definitions

  • ABSTRACT A cylinder safety lock the plug of which carries a plurality of longitudinally extending parallel resiliently flexible blade like elements arranged in a substantially cylindrical squirrel cage-like fashion and engageable in their free unstrained rest position in the absence of a key with corresponding grooves of an inner coaxially positioned core portion of the cylinder of the lock to hold said plug against rotation; said blade-like elements being engageable with an inserted key for being deflected radially outwards either into an annular space left between said cylinder and core for unlocking said rotor when the key is correct or beyond said intermediate space into corresponding grooves of said stator to still look said rotor when the inserted key is incorrect.
  • the present invention relates to a key-operated safety cylinder lock with a large number of coded combinations and offering over the conventional prior art known cylinder locks of the pin tumbler or disk tum- .bler kind the advantage of a greater simplicity and a faster assembly work without requiring the high accuracy or precision manufacture required for these conventional cylinder locks.
  • a pin tumbler cylinder lock consists of a cylinder casing or shell, of a barrow-like or plug-shaped substantially cylindrical inner plug, and of pluralities of pairs of registering cylindrical pins slidably located in said cylinder and plug, respectively, and biased radially inwards by corresponding resilient means.
  • the disk or plate tumbler lock is of a significantly simpler construction than said pin tumbler lock. Such a structural simplification is however achieved at the expense of a lesser effectiveness and a lower locking reliability.
  • This type of lock has for every combination element three parts only, namely, one plate or disk member, a spring and an element holding said plate member against motion.
  • the present invention is based upon a new and improved principle of providing a lock with blade-like elements.
  • One main object of the invention is to provide a cheap lock which provides a large number of combinations. This lock while being very effective requires neither a high precision for its manufacture nor any handling of tiny component parts.
  • One of the main characterizing features of the new lock consists in that one single member provided with blade-like elements secured to the plug performs the combined functions of locking and resilient biasing action towards the rest position when the key is removed.
  • FIG. 1 shows a view in longitudinal section of the lock according to the invention with the key fully inserted and the plug in unlocked condition;
  • FIG. 2 is a cross-section through the lock of FIG. 1 taken upon the line Il-ll of that Figure;
  • FIG. 3 is a perspective view of an embodiment of a possible construction of the plug provided with a cylindrical member carrying the blade-like elements;
  • FIG. 4 shows a fragmentary longitudinal sectional view of the lock with an inserted wrong key unable to unlock or free the rotor for rotation;
  • FIG. 5 is a fragmentary sectional view of the plug taken upon the line VV of FIG. 4 and showing in particular the position of a bladelike element remaining in looking position in the presence of a wrong key;
  • FIG. 6 is a fragmentary longitudinal sectional view of the lock, the key having been removed and the bladelike elements being in their free released position;
  • FIG. 7 is a cross-section taken upon the line VIIVII of FIG. 6 and illustrating the position of one of said blade-like elements
  • FIG. 8 is an outside elevational view of an alternative embodiment or modification of the plug carrying the blade-like elements
  • FIG. 9 is a cross-section through the key-operated portion of the plug, showing an open recess provided endwise in said plug portion andformed with a flattened portion for being rotatably driven by the inserted key;
  • FIG. 10 is a perspective view of a separate blade element carrying part.
  • the cylinder 1 formed with a cavity 2 provided with a cylindrical inner core portion 4 guidingly engageable by resiliently flexible strips which form a unitary, substantially cylindrical gratinglike skeleton structure.
  • the strips may be formed independently and be secured by any convenient means to a plug 9 for movement with the plug, the plug being rotatably mounted within the bore provided in the end portion of the cylinder.
  • the strips could be pivotally or otherwise movably connected to the rotor and biased by separate resilient means co-operating with said blade-like elements.
  • the resilient strips 6, 6", 6", 6"" are bent radially inwards at their ends to form a substantially radially inward directed projection of selectively variable length or size to form a dog or the like catch element for circumferentially aligning said strips in a same cylindrical surface located within the intermediate annular gap or space 2 left between the outer cylindrical shell or casing portion 1 of the cylinder and said inner core portion 4, when said dogs 7 exactly correspond to the positions and depths of the notches 7" formed on the cylindrical key shank 8.
  • the shape and size of the cavity 2 enables the rotation of the plug and of the assembly with the strips within the cylinder.
  • the cylinder body portion or outer casing 1 is formed with grooves or like recesses such as 3 the number of which is for instance equal to that of the number of strips 6', etc., which may be received therein when they are pushed radially outwards by the key 8 and in particular by those cylindrical portions of this key which are devoid of notches 7" or provided with too shallow notches, i.e., notches of insufficient depth.
  • FIG. 7 clearly shows the position of one strip 6 within the core notch 3'.
  • the notches 7" of the key 8 in view of their depth, lift the strips 6', 6", 6", 6"”, etc., by a distance corresponding exactly to the height or length of the dogs 7 so as to cylindrically align all of the strips 6, etc., within the annular relatively narrow gap 2 of the cylinder, defined between the outer cylindrical casing l and the inner cylindrical core 4 of the cylinder for allowing free rotation of the plug.
  • the notches 7" of the key 8 must be located exactly in registering relation to the dogs 7 of the strips 6, etc. corresponding to the shape and depth of the notches 7" of the key and the dogs 7 may be provided at various mutually differing positions along the longitudinal generating lines or direction of said strips (which may therefore be of mutually differing lengths).
  • FIGS. 1 and 2 there is shown a cylinder 1, 4 formed with five grooves 3, 3' provided in the casing 1 and plug 4 together with a plurality of five strips 6', etc. It is however obvious that it is always possible without departing from the scope of the invention to provide a cylinder with three, six, eight or more grooves and a plug with two, three, four or more strips, provided that the distribution of the latter correspond for an angular orientation thereof to the positions of the grooves 3, 3' of the cylinder or of those particular grooves which have been selected for a given code combination. It is conceivable that the number of combinations may be very large and the security or safety offered by the lock of the invention is accordingly very high as is its reliability of dependability.
  • FIGS. 2 and of the accompanying drawings there are shown V-shaped dogs 7 of strips to facilitate the rotation of the key and the positioning of the strips.
  • a half round or ogival shape may however also be used.
  • the radially inner bottom portion 7" of the key 8 is shown in FIG. 2 as being of substantially flat configuration but it may also assume a curved shape.
  • the driving of the plug is effected by the end tip 8' of the cylindrical key 8, which tip is formed for instance with a flattened portion 7 which is engageable with and adaptable to a complementary cavity or open recess 10 of mating shape provided in the plug 9 as shown in cross-section in FIG. 9.
  • the end tip 8' of the key 8 is shaped into a conical or tapered portion 8a to facilitate insertion into the lock irrespective of the actual angular orientation of the key or lock.
  • FIGS. 8 and 10 Since the making of a cage-like strip-holder such as shown in FIG. 3 through punching or cutting with a suitable press may require expensive tools or implements, it is possible for more reduced series production and investments to use the alternative embodiment shown in FIGS. 8 and 10 wherein the rotor drive portion 9 is fitted, through assembling, setting, staking or crimping, riveting, cottering, welding, brazing or soldering carried out on connecting lug portions 12, with pitch-fork like members 11 carrying a strip 6' between the prong-like legs of member 11 and connected endwise for example integrally with the cross bracing portion of said member.
  • Such strip holders 11 are still more easily made with respect to shape and size according to requirements.
  • the manufacture of the cage-like strip-holder 6 (FIG. 3) or of separate or independent strips 11 may use special manufacturing processes and methods without departing from the principle of the invention.
  • a safety cylinder lock comprising a hollow cylinder, a key-responsive inner cylindrical plug member rotatably mounted within said cylinder and rotatable by a removable key formed with notches and insertable into said plug member, and key-operated locking means carried by said plug member and releasably engageable with said cylinder, wherein the improvement consists in that said cylinder comprises an outer cylindrical casing portion and an inner substantially cylindrical core portion at least partially co-extensive in coaxial relationship with said outer casing portion to leave therebetween an intermediate annular space, the lateral peripheral surface of said inner core portion being formed with a number of circumferentially spaced grooves whereas said locking means comprise resiliently flexible strips made fast with said rotor member and extending in generally parallel relation to the longitudinal axis of said lock and to said grooves, said strips being arranged according to an at least approximately cylindrical configuration coaxially surrounding said cylinder core portion and fitted with clearance in said annular intermediate space to be rotatable therein, said strips being circumferentially distributed in spaced relationship to
  • a device according to claim 1, whererin said key has a shank portion of a substantially cruciform crosssectional contour.
  • a device wherein the inner wall of said outer cylinder casing portion is formed with longitudinally extending, circumferentially distributed spaced grooves registering with corresponding grooves, respectively, of said cylinder core portion and adapted to receive said strip means therein when deflected radially outwards by an inserted wrong key to hold said plug member against rotation.
  • each one of said strips is integrally formed with a free radially inward bent end portion forming said catch element.
  • a device wherein said catch elements are positioned at different locations in the longutidinal direction of said strips.
  • a device comprising a squirrel-cage like holder for said strips which are connected endwise with one end portion of said cage and located between the cage bars, respectively, said cage being secured to said plug member.
  • each one of said strips is integrally endwise with the cross brace portion of a pitch fork-shaped part secured with the endsof its prong-like side legs to said plug member.
  • a device wherein said rotor is formed endwise with a non-cylindrical open recess for accommodating a complementarily shaped tip portion of said key in the inserted position of the latter for operative connection and driving engagement with said rotor member.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US00361109A 1972-05-17 1973-05-17 Cylinder lock Expired - Lifetime US3855829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/472,022 US3988911A (en) 1973-05-17 1974-05-21 Cylinder lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7217544A FR2185096A5 (es) 1972-05-17 1972-05-17

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/472,022 Continuation-In-Part US3988911A (en) 1973-05-17 1974-05-21 Cylinder lock

Publications (1)

Publication Number Publication Date
US3855829A true US3855829A (en) 1974-12-24

Family

ID=9098624

Family Applications (1)

Application Number Title Priority Date Filing Date
US00361109A Expired - Lifetime US3855829A (en) 1972-05-17 1973-05-17 Cylinder lock

Country Status (7)

Country Link
US (1) US3855829A (es)
AR (1) AR198089A1 (es)
BR (1) BR7303549D0 (es)
ES (1) ES415157A1 (es)
FR (1) FR2185096A5 (es)
GB (1) GB1380227A (es)
IT (1) IT985913B (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971237A (en) * 1975-07-09 1976-07-27 Georgia-Pacific Corporation Door lock
US3988911A (en) * 1973-05-17 1976-11-02 Societe D'exploitation Des Brevets Neiman Cylinder lock
US4047409A (en) * 1976-09-09 1977-09-13 Addmaster Corporation Key controlled lock
US6408662B1 (en) * 1999-08-02 2002-06-25 Takigen Mfg. Co., Ltd. Locking device with key-operated lock
US8881558B2 (en) 2003-08-05 2014-11-11 The Eastern Company Combination and key operated locks with indicators

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3100260B1 (fr) 2019-08-27 2021-10-01 Assa Abloy France Sas Serrure à cylindre

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR595730A (fr) * 1925-01-09 1925-10-08 Canon de sûreté pour clés diverses
FR615008A (fr) * 1926-04-23 1926-12-28 Etablissements Freyburger Soc Mécanisme de sûreté pour serrures
US1653511A (en) * 1923-05-09 1927-12-20 Schlage Lock Co Lock
US3404548A (en) * 1966-06-29 1968-10-08 Owen F. Keefer Lock
US3621682A (en) * 1969-11-17 1971-11-23 Indak Mfg Corp Lock mechanisms for switches or the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1653511A (en) * 1923-05-09 1927-12-20 Schlage Lock Co Lock
FR595730A (fr) * 1925-01-09 1925-10-08 Canon de sûreté pour clés diverses
FR615008A (fr) * 1926-04-23 1926-12-28 Etablissements Freyburger Soc Mécanisme de sûreté pour serrures
US3404548A (en) * 1966-06-29 1968-10-08 Owen F. Keefer Lock
US3621682A (en) * 1969-11-17 1971-11-23 Indak Mfg Corp Lock mechanisms for switches or the like

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988911A (en) * 1973-05-17 1976-11-02 Societe D'exploitation Des Brevets Neiman Cylinder lock
US3971237A (en) * 1975-07-09 1976-07-27 Georgia-Pacific Corporation Door lock
US4047409A (en) * 1976-09-09 1977-09-13 Addmaster Corporation Key controlled lock
US6408662B1 (en) * 1999-08-02 2002-06-25 Takigen Mfg. Co., Ltd. Locking device with key-operated lock
US8881558B2 (en) 2003-08-05 2014-11-11 The Eastern Company Combination and key operated locks with indicators

Also Published As

Publication number Publication date
BR7303549D0 (pt) 1974-08-29
ES415157A1 (es) 1976-06-01
AR198089A1 (es) 1974-05-31
FR2185096A5 (es) 1973-12-28
DE2323566A1 (de) 1973-12-06
IT985913B (it) 1974-12-30
DE2323566B2 (de) 1976-07-15
GB1380227A (en) 1975-01-08

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