EP0064087A1 - Auftastsicheres Zylinderschloss - Google Patents

Auftastsicheres Zylinderschloss Download PDF

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Publication number
EP0064087A1
EP0064087A1 EP81103287A EP81103287A EP0064087A1 EP 0064087 A1 EP0064087 A1 EP 0064087A1 EP 81103287 A EP81103287 A EP 81103287A EP 81103287 A EP81103287 A EP 81103287A EP 0064087 A1 EP0064087 A1 EP 0064087A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
lock
key
ward
locking means
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.)
Granted
Application number
EP81103287A
Other languages
English (en)
French (fr)
Other versions
EP0064087B1 (de
Inventor
Tsao-Keng Huang
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
Priority to DE8181103287T priority Critical patent/DE3168256D1/de
Priority to EP81103287A priority patent/EP0064087B1/de
Priority to AT81103287T priority patent/ATE11317T1/de
Publication of EP0064087A1 publication Critical patent/EP0064087A1/de
Application granted granted Critical
Publication of EP0064087B1 publication Critical patent/EP0064087B1/de
Expired 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
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor

Definitions

  • the present invention concerns a cylinder lock which an adroit picker finds it difficult to pick with a wire or a skeleton key, and which has resilient means far more durable than conventional cylinder locks.
  • conventional cylinder keys comprise substantially a planar key with an indented edge, a cylinder, and a body internally provided with a plurality of pin tumblers resiliently retained in a tunnel orienting to the keyway.
  • the pins When a key with a contoured profile on one edge is inserted into the keyway from the keyhole, the pins will be contacted by these undulation, and once the correct key is inserted thereinto, then the pin tumblers will all be arranged in such a position as to allow the cylinder to be turned.
  • the keyway of such conventional lock are liable to be picked by probing a wire therein.
  • the resilient means generally springs, which urge the pin tumblers against the notches of a key at a specific level to discriminate if the key is the correct one, are hair -spring thin. After some use accumulation of rust.or dirt may lead to failure of such fine parts, thus reducing the life of the lock.
  • the keyhole of this invention is designed a spiral entrance that allows only the entry of specialised keys, the front end of which is provided with a plurality of projections arranged around the periphery thereof, corresponding to equal number of slots provided at one end of the cylinder, in each of which slots there rests a ward piece resiliently urged thereinto to prevent the rotation of the cylinder, which ward piece is pushed outwardly away from the slot and no longer hindersthe rotation of the cylinder when a corresponding projection enters the slot.
  • the resilient means can be economically a thick metal reeds instead of the springs fabricated by extremely fine wire, thus enhancing the durability and reducing the cost of the manufacture thereof.
  • the cylinder lock according to the invention includes a body, a cylinder, a bush and a key, generally designated by reference numerals (10), (20), (30), and (40) respectively.
  • the body has a bore (11) which receives cylinder (20) and bush (30), the former being rotatable therein, whereas the latter being immovably secured in place, for example by passing a pin (15) through hole (151).
  • Hook (12) has a recess (121), the dimension and the position of which allow one part of ball (13) retained within a hole (14) to enter when the hook is in locked position in blind hole (16) so that it cannot be pull up.
  • Like structure may be formed at the other leg of hook (12). (See Figure 2).
  • cylinder (20) At one end of cylinder (20) there are provided with two opposite recesses (26), each of which is formed by a cutout defined by two intersecting faces(261) (262).
  • face (261) directly opposite to ball (13), i.e. normal to the long axis of hole (14) the clearance between the inner wall of body (10) and the upper end of cylinder is broadest and enough to allow the ball to totally leave recess (121) to free hook (12) so that the latter can be unlocked (see Figure 2).
  • the non- recessed portion (27) urges ball (13) back into recess (121) to lock hook (12).
  • the outer end of bush (30) is provided with a spiral entrance (31) which is structured so that only an object with spiral structure of which the pitch and lead angle substantially coincides with that of the entrance is allowed to be screwed thereinto. Further, to discriminate whether or not the key thus enters is the correct one, the lower end (21) of cylinder (20), which is nested in the upper end of bush (30), forms a plurality of slots (22) spaced apart from each other around the periphery of end (21) and extending along the length of cylinder (20).
  • the end of key (40) forms an enlarged end (42) provided with a plurality of projectors (41) arranged around the periphery thereof, the dimension and position of which projections substantially coincide with the slots (22), and at the site at the upper end of bush corresponding to each slot (22) there is a hole (32), through which a ward piece (33) is resiliently urged inwardly to reach one of said slots (22).
  • the projections are preferably ridges extending along the length of said key.
  • ward piece (33) is inseparably fixed to one end of a spring reed (34), the other end of the latter being secured to the outer wall of bush (30) by, for example, welding or by a screw (not shown).
  • spiral groove (43) extending across the projections (41), which spiral groove (43) is biten into by the helical edge (311) of spiral entrance (31), thereby allowing the key to be screwed into the bush to reach cylinder.
  • the enlarged end (42) of the key looks like a gear.
  • the width of each projection and the distance between any two adjacent projections may differ greatly at random, depending on the design of the slots (22). As all of the pitch and the lead angle of the spiral entrance, and.the position and number of the slots may vary arbitrarily, the probability that a lock happened to be unlocked by the key of another such lock is extremely low, thus ensuring high security and reliablility of this invention.
  • An alternative modification of the key (40), designated by (40'), is also feasible. It has a spiral shank (43'), with a length of its front forming a plurality of projections at the outer side.
  • the slots (22) of cylinder (20) and the ward pieces (33) and holes (32) of bush (30) must be arranged in a spiral trajectory instead of a circumference. This is easy to understand, and therefore not illustrated in the drawing.
  • the spiral shank must be structured so that it, before reaching the slots, can be pushed inwardly a short distance in axial direction to fit its projection into mating slots.

Landscapes

  • Lock And Its Accessories (AREA)
  • Processing Of Solid Wastes (AREA)
  • Centrifugal Separators (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Gates (AREA)
EP81103287A 1981-04-30 1981-04-30 Auftastsicheres Zylinderschloss Expired EP0064087B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8181103287T DE3168256D1 (en) 1981-04-30 1981-04-30 Cylinder lock resistant to picking
EP81103287A EP0064087B1 (de) 1981-04-30 1981-04-30 Auftastsicheres Zylinderschloss
AT81103287T ATE11317T1 (de) 1981-04-30 1981-04-30 Auftastsicheres zylinderschloss.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81103287A EP0064087B1 (de) 1981-04-30 1981-04-30 Auftastsicheres Zylinderschloss

Publications (2)

Publication Number Publication Date
EP0064087A1 true EP0064087A1 (de) 1982-11-10
EP0064087B1 EP0064087B1 (de) 1985-01-16

Family

ID=8187693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103287A Expired EP0064087B1 (de) 1981-04-30 1981-04-30 Auftastsicheres Zylinderschloss

Country Status (3)

Country Link
EP (1) EP0064087B1 (de)
AT (1) ATE11317T1 (de)
DE (1) DE3168256D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007030942A1 (en) * 2005-09-15 2007-03-22 Pinhead Components Inc. Locking system with hidden keyed access

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811578A (en) * 1983-08-18 1989-03-14 John F. Masoncup Padlock with tamper-actuated audible and/or inaudible alarm

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE179910C (de) *
US1526728A (en) * 1923-11-23 1925-02-17 Wagner Julius Stanley Lock
US1849070A (en) * 1928-10-15 1932-03-15 Buehner Christian Padlock
DE593541C (de) * 1934-02-28 Emil Gross Schluessel fuer Sicherheitsschloesser
US2460551A (en) * 1945-06-16 1949-02-01 Gunnar E Swanson Unitary tumbler cylinder lock
US3320783A (en) * 1966-12-09 1967-05-23 Chicago Lock Co Key for an axial tumbler type lock
US4138868A (en) * 1977-08-19 1979-02-13 Richards Sr Frederick F Replaceable cylinder padlock

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE179910C (de) *
DE593541C (de) * 1934-02-28 Emil Gross Schluessel fuer Sicherheitsschloesser
US1526728A (en) * 1923-11-23 1925-02-17 Wagner Julius Stanley Lock
US1849070A (en) * 1928-10-15 1932-03-15 Buehner Christian Padlock
US2460551A (en) * 1945-06-16 1949-02-01 Gunnar E Swanson Unitary tumbler cylinder lock
US3320783A (en) * 1966-12-09 1967-05-23 Chicago Lock Co Key for an axial tumbler type lock
US4138868A (en) * 1977-08-19 1979-02-13 Richards Sr Frederick F Replaceable cylinder padlock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007030942A1 (en) * 2005-09-15 2007-03-22 Pinhead Components Inc. Locking system with hidden keyed access
US8061169B2 (en) 2005-09-15 2011-11-22 Pinhead Components, Inc. Locking system with hidden keyed access

Also Published As

Publication number Publication date
EP0064087B1 (de) 1985-01-16
DE3168256D1 (en) 1985-02-28
ATE11317T1 (de) 1985-02-15

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