EP1449989A1 - Serrures - Google Patents

Serrures Download PDF

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Publication number
EP1449989A1
EP1449989A1 EP04250820A EP04250820A EP1449989A1 EP 1449989 A1 EP1449989 A1 EP 1449989A1 EP 04250820 A EP04250820 A EP 04250820A EP 04250820 A EP04250820 A EP 04250820A EP 1449989 A1 EP1449989 A1 EP 1449989A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
hardened
lock
pin
lock according
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.)
Withdrawn
Application number
EP04250820A
Other languages
German (de)
English (en)
Inventor
Ian Southall
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.)
Fullex Locks Ltd
Original Assignee
Fullex Locks 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
Application filed by Fullex Locks Ltd filed Critical Fullex Locks Ltd
Publication of EP1449989A1 publication Critical patent/EP1449989A1/fr
Withdrawn legal-status Critical Current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
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1614—Use of special materials for parts of locks of hard materials, to prevent drilling
    • 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
    • E05B27/0003—Details
    • E05B27/0017—Tumblers or pins

Definitions

  • the invention relates to locks, particularly to cylinder locks, which include Euro-cylinder locks, which have a specification equivalent to British standard EN 1303.
  • Cylinder locks are usually key-operable. There is typically a body which is generally cylindrical which houses a cylinder rotatable on entry of a key from one end. Rotation enables actuation of a catch or similar release mechanism connected to the end of the cylinder opposite the key entry.
  • the cylinder is locked against unwanted rotation by differ pins, which are of different lengths and are each arranged under spring pressure. The differ pins extend transversely to the longitudinal axis of the cylinder, and in line longitudinally of the cylinder, as considered from the key entry end. The differ pins drop into seatings in the cylinder to effect locking against unwanted rotation, an hence unwanted actuation of the lock.
  • the key has a surface profile which corresponds to the "profile" determined by the differ pins so that when the correct key is inserted in the entry end of the lock, it is able to be pushed in and in so doing it raises the differ pins in turn from their respective seatings against the spring pressure just to clear the boundary surface of the cylinder, which can then be turned by the key after full insertion thereof. Removal of the key allows the differ pins to drop back into their respective locks, to effect locking.
  • a cylinder lock comprising a cylinder having part of a hardness which is relatively increased as compared with other parts of the lock.
  • the part may be a relatively hardened differ pin.
  • the pin may comprise a hardened steel.
  • the pin may be made solely of hardened steel.
  • the pin may have a jacket or core of hardened steel, or may be formed entirely of hardened steel.
  • the steel may comprise an iron-carbon steel having a eutectoid composition of about 0.80% carbon.
  • the relatively hardened differ pin may be a pin which is mounted closest to the key entry point of the cylinder.
  • the part may also comprise an additional relatively hardened device.
  • the device may comprise a plurality of additional fixed relatively hard pins mounted in the cylinder.
  • the two additional pins may be inclined to the axis of the line of differ pins. Suitably, they may be positioned between the hardened differ pin and an immediately adjacent non-hardened differ pin.
  • the lock may be a double cylinder lock, one or both of which may comprise a cylinder as hereinbefore defined.
  • a cylinder lock 1 comprising a cylinder 2 having part 3 of a hardness which is relatively increased as compared with other parts of the lock 1.
  • part of the lock 1 is formed of a hardened material, in this case the first (adjacent a key hole end of the cylinder) differ pin 3 of a row of differ pins 3, 4, 5, 6, 7 arranged longitudinally of the lock 1, the differ pins themselves extending transversely of the longitudinal axis of the cylinder 2, and being mounted under pressure of a respective spring (not shown).
  • the pin 3 is in the embodiment made of a hardened steel, such as an iron-carbon steel having a eutectoid composition of about 0.80% carbon, which steel is hardened and tempered in the usual way.
  • the hardened steel differ pin 3 acts as a barrier which prevents drilling out of the cylinder 2, with the result that the lock 1 is protected from attack, and in turn protects the area it locks against unauthorised access.
  • the pin or pins 3, 9 may be of brass, with either a hardened steel shell or coat, or core, or it or they may be made entirely of hardened steel.
  • the face 8 of the cylinder 2 bearing the key-hole 11 may also be of relatively hardened material, such as hardened steel. This hardened face may be a sole part of increased hardness, or it may be used in conjunction with a hardened differ pin 3.
  • one or both cylinder locks of a double cylinder lock 12 may have a cylinder embodying the invention.
  • the hardened pin 3, the additional security pins 9 and/or part of the cylinder such as the face 8 may be hardened using a material other than the hardened carbon steel mentioned.
  • a cylinder lock embodying the invention is protected against attack by a tool such as a drill applied to the face 8, so enhancing security of an area protected by a lock 1, 12 embodying the invention.

Landscapes

  • Lock And Its Accessories (AREA)
EP04250820A 2003-02-18 2004-02-16 Serrures Withdrawn EP1449989A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0303763 2003-02-18
GB0303763A GB0303763D0 (en) 2003-02-18 2003-02-18 Locks

Publications (1)

Publication Number Publication Date
EP1449989A1 true EP1449989A1 (fr) 2004-08-25

Family

ID=9953264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04250820A Withdrawn EP1449989A1 (fr) 2003-02-18 2004-02-16 Serrures

Country Status (2)

Country Link
EP (1) EP1449989A1 (fr)
GB (2) GB0303763D0 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298681A1 (fr) * 1987-07-08 1989-01-11 Diffusion Alloys Limited Cylindre avec gâchettes pour fermer, présentant une surface trempée
EP0330803A2 (fr) * 1988-03-04 1989-09-06 Ernst Keller Cylindre pour serrure de sécurité
DE4332274C1 (de) * 1993-09-23 1994-10-27 Niederdrenk Julius Kg Schließzylinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1484757A (en) * 1922-06-27 1924-02-26 American Hardware Corp Pin-cylinder lock
GB1040276A (en) * 1963-07-30 1966-08-24 Eaton Yale & Towne Key operable locks
AT337035B (de) * 1975-03-10 1977-06-10 Grundmann Rohrbacher Schlosser Aufbohrschutz fur sicherheitszylinder
FR2802231B1 (fr) * 1999-12-10 2002-07-05 Bricard Sa Pastille anti-percage universelle pour cylindre de serrure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298681A1 (fr) * 1987-07-08 1989-01-11 Diffusion Alloys Limited Cylindre avec gâchettes pour fermer, présentant une surface trempée
EP0330803A2 (fr) * 1988-03-04 1989-09-06 Ernst Keller Cylindre pour serrure de sécurité
DE4332274C1 (de) * 1993-09-23 1994-10-27 Niederdrenk Julius Kg Schließzylinder

Also Published As

Publication number Publication date
GB0303763D0 (en) 2003-03-26
GB0403385D0 (en) 2004-03-17
GB2399385A (en) 2004-09-15

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