US3861181A - Keys - Google Patents

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Publication number
US3861181A
US3861181A US35142773A US3861181A US 3861181 A US3861181 A US 3861181A US 35142773 A US35142773 A US 35142773A US 3861181 A US3861181 A US 3861181A
Authority
US
United States
Prior art keywords
key
cuts
series
double
profile
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
Other languages
English (en)
Inventor
Thomas Edgar Needham
Wilfrid David Rogers
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.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Wilmot Breeden Ltd
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
Priority claimed from GB1877772A external-priority patent/GB1428965A/en
Application filed by Wilmot Breeden Ltd filed Critical Wilmot Breeden Ltd
Application granted granted Critical
Publication of US3861181A publication Critical patent/US3861181A/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
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7881—Bitting

Definitions

  • SHEET 20F 2 PATENTEU JAN 21 I975 KEYS This invention relates to keys for locking devices of the plug and cylinder type, with a plug or barrel in which the key is inserted to turn the plug.
  • the plug houses a row of wards or tumblers which normally engage the surrounding housing or cylinder" in which the plug is housed, the wards being retracted into the plug on insertion of the key thereby freeing the plug for rotation respective the key which is formed with edge *cuts" correctly positioned and dimensioned to suit the specific ward arrangement.
  • the object of the invention is to provide a double-entry key for use with a locking device having double-banked wards, giving the security provided by the differs in respect of key form theoretically obtainable from the total number of wards used.
  • a doubleentry key is formed for different depths of insertion in the two key positions, the two key edge profiles being different whereby to operate a high security locking device with the wards thereof arranged in two paired banks, respectively operable simultaneously by the different key profiles.
  • a double-entry key is formed for different depths of insertion for the two entry positions and has different edge profiles each of which comprises an arrangement of identical cuts which, considered in paired groups lengthwise of the key, are transposed diagonally of the pair groups across the key.
  • edge profiles each of which comprises an arrangement of identical cuts which, considered in paired groups lengthwise of the key, are transposed diagonally of the pair groups across the key.
  • a double-entry key is formed for different depths of insertion for the two entry positions and has different edge profiles, each profile comprising two series of cuts with the cuts of the two alternating in each profile and the series respectively arranged for operation of each bank of wards of a double-banked ward locking device, the same series of cuts on the two edges being relatively displaced therealong by an amount equal to the difference between the two depths of insertion of the key.
  • the key tip may be formed so as to limit the insertion to different depths according to the entry position, but in preferred embodiments the key has a shoulder or shoulders at the end of the key shank which are arranged to engage alimiting abutment or ahutments on the locking device and which are relatively displaced lengthwise of the key.
  • FIG. 1 is a profile view of the key
  • FIG. 2 is a cross-section on the line ll II in FIG. 1.
  • FIG. 3 is a diagrammatic view of the locking device plug illustrating the operative relationship with the key
  • FIG. 4 is a view of the key-receiving slot of the plug.
  • FIG. 5 is a side view of the plug.
  • the locking device has two banks each of five wards W1, W2. W5 and W6, W7 W10 with corresponding wards of the two banks thereof coplanar.
  • the wards W are thus paired", for example WlzW6 and W42W9,
  • each ward W is independently spring loaded to the projecting locking position shown in FIG. 3.
  • the two wards such as WI and W6 of each pair are thus respectively operated by directly opposed cuts H1 and H6 on the two key edges, and to provide maximum security these two cuts are different so that the wards operate independently in the sense that they provide the same security as an equal number of wards arranged in a single row axially of the lock plug in the more usual manner.
  • the plug body 1 To guide the key the plug body 1 has relatively offset key guides 4 projecting into the slot 2 on opposite sides thereof, for engagement with complementary guide grooves 5 along the sides of the key shank. Insertion limiting shoulders 6 and 7 at the end of the key shank are relatively displaced lengthwise of the key 3 by an amount equal to the spacing of consecutive cuts on the key edges, and the lock plug body 1 has abutment faces 8 and 9 which are similarly relatively displaced.
  • the depth of key insertion is greater than in the other key position, i.e. with the key shoulders 6 and 7 respectively engaging the plug faces 8 and 9, the difference being equal to the spacing of consecutive key cuts, i.e., half the spacing of immediately adjacent pairs of wards W of the lock plug.
  • H7, H3, H8, H4, H9, H5, H10 and those on the other edge are H6, H1, H7, H2, H8, H3, H9, H4, H10, H in that order.
  • the cuts can be denoted l, 2, 4, 3, 5, 4, 3, 3, 2, 1 along one edge profile, each numeral identifying a corresponding height of cut as shown in FIG. 3. In this case the same cuts are rearranged to provide the opposite edge profile in the order 2, l, 3, 4, 4, 5, 3, 3, l, 2.
  • each profile has two series of cuts H1, H2 H5 and H6, H7 H which alternate along the profile.
  • the same series of cuts on the two edges are relatively displaced by an amount equal to the difference between the two depths of key insertion, i.e., half the ward spacing in the lock plug.
  • the different depths of key insertion can be limited in other ways, for example by formation of the key tip so that it engages stop surfaces in the lock plug in an appropriate manner.
  • a single shoulder 6 at the end of one edge of the key shank will suffice for engagement with the relatively displaced limiting abutment faces 8 and 9 at the two edges of the key slot 4 at the outer end of the lock plug.
  • a double-entry key formed for different depths of insertion for the two entry positions and having different edge profiles, each profile comprising two series of cuts with the cuts of the two series alternating in each profile and the series respectively arranged for operation of each bank of wards of a double-banked ward locking device, the same series of cuts on the two edges being relatively displaced therealong by an amount equal to the difference between the two depths of insertion of the key.
  • a key according to claim 1 having a shoulder or shoulders at the end of the key shank arranged to engage a limiting abutment or abutments on a locking device whereby to define said different depths of insertion.
  • a key according to claim 2 wherein two insertion limiting shoulders at the end of the key shank are relatively displaced lengthwise of the key by an amount equal to the spacing between adjoining cuts of each edge profile.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US35142773 1972-04-22 1973-04-16 Keys Expired - Lifetime US3861181A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1877772A GB1428965A (en) 1972-04-22 1972-04-22 Locking devices
GB2486472 1972-05-26

Publications (1)

Publication Number Publication Date
US3861181A true US3861181A (en) 1975-01-21

Family

ID=26253597

Family Applications (1)

Application Number Title Priority Date Filing Date
US35142773 Expired - Lifetime US3861181A (en) 1972-04-22 1973-04-16 Keys

Country Status (5)

Country Link
US (1) US3861181A (enrdf_load_stackoverflow)
JP (1) JPS5229677B2 (enrdf_load_stackoverflow)
AU (1) AU5477473A (enrdf_load_stackoverflow)
FR (1) FR2182492A5 (enrdf_load_stackoverflow)
IT (1) IT984055B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114411A (en) * 1977-03-07 1978-09-19 Schlage Lock Company Augmented key and cylinder lock
WO2000017473A1 (en) * 1998-09-08 2000-03-30 Strattec Security Corporation Key and cylinder lock system
FR2933727A1 (fr) * 2008-07-09 2010-01-15 Emka France Cle plate pour serrure conventionnelle
US9181729B2 (en) * 2010-09-07 2015-11-10 Sankyo Kinzoku Co., Ltd. Lock kit and key rotor housed in rotor case
US10240364B2 (en) * 2016-08-01 2019-03-26 ABUS August Bremicker Söhne KG Key or key blank for a disk cylinder and associated disk cylinder
US10890011B2 (en) * 2016-03-16 2021-01-12 Assa Abloy Opening Solutions Sweden Ab Cylinder lock and key system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4820543B1 (enrdf_load_stackoverflow) * 1969-10-01 1973-06-21

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047966A (en) * 1933-11-03 1936-07-21 Briggs & Stratton Corp Lock
US2783636A (en) * 1953-07-30 1957-03-05 Cecil D Scott Pin tumbler lock mechanism
US3597948A (en) * 1969-01-14 1971-08-10 Gen Motors Corp Lock cylinder assembly
US3707863A (en) * 1969-11-17 1973-01-02 Ymos Metallwerke Wolf & Becker Cylinder lock
US3735614A (en) * 1971-12-14 1973-05-29 Volper E Keller Cylinder lock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047966A (en) * 1933-11-03 1936-07-21 Briggs & Stratton Corp Lock
US2783636A (en) * 1953-07-30 1957-03-05 Cecil D Scott Pin tumbler lock mechanism
US3597948A (en) * 1969-01-14 1971-08-10 Gen Motors Corp Lock cylinder assembly
US3707863A (en) * 1969-11-17 1973-01-02 Ymos Metallwerke Wolf & Becker Cylinder lock
US3735614A (en) * 1971-12-14 1973-05-29 Volper E Keller Cylinder lock

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114411A (en) * 1977-03-07 1978-09-19 Schlage Lock Company Augmented key and cylinder lock
WO2000017473A1 (en) * 1998-09-08 2000-03-30 Strattec Security Corporation Key and cylinder lock system
US6101855A (en) * 1998-09-08 2000-08-15 Strattec Security Corporation Key and cylinder lock system
US6109081A (en) * 1998-09-08 2000-08-29 Strattec Security Corporation Key and cylinder lock system
FR2933727A1 (fr) * 2008-07-09 2010-01-15 Emka France Cle plate pour serrure conventionnelle
US9181729B2 (en) * 2010-09-07 2015-11-10 Sankyo Kinzoku Co., Ltd. Lock kit and key rotor housed in rotor case
US10890011B2 (en) * 2016-03-16 2021-01-12 Assa Abloy Opening Solutions Sweden Ab Cylinder lock and key system
US10240364B2 (en) * 2016-08-01 2019-03-26 ABUS August Bremicker Söhne KG Key or key blank for a disk cylinder and associated disk cylinder

Also Published As

Publication number Publication date
DE2320224A1 (de) 1973-10-25
JPS5229677B2 (enrdf_load_stackoverflow) 1977-08-03
DE2320224B2 (de) 1976-06-10
IT984055B (it) 1974-11-20
JPS4942496A (enrdf_load_stackoverflow) 1974-04-22
AU5477473A (en) 1974-10-24
FR2182492A5 (enrdf_load_stackoverflow) 1973-12-07

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