WO1999060235A3 - Electrically controlled lock employing shape memory alloy - Google Patents

Electrically controlled lock employing shape memory alloy Download PDF

Info

Publication number
WO1999060235A3
WO1999060235A3 PCT/US1999/010891 US9910891W WO9960235A3 WO 1999060235 A3 WO1999060235 A3 WO 1999060235A3 US 9910891 W US9910891 W US 9910891W WO 9960235 A3 WO9960235 A3 WO 9960235A3
Authority
WO
WIPO (PCT)
Prior art keywords
lock
shape memory
memory alloy
locks
electrically controlled
Prior art date
Application number
PCT/US1999/010891
Other languages
French (fr)
Other versions
WO1999060235A2 (en
Inventor
Dirk L Bellamy
Original Assignee
Slc Technologies Inc
Dirk L Bellamy
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 Slc Technologies Inc, Dirk L Bellamy filed Critical Slc Technologies Inc
Priority to AU39990/99A priority Critical patent/AU3999099A/en
Publication of WO1999060235A2 publication Critical patent/WO1999060235A2/en
Publication of WO1999060235A3 publication Critical patent/WO1999060235A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0611—Cylinder locks with electromagnetic control
    • E05B47/0638—Cylinder locks with electromagnetic control by disconnecting the rotor
    • E05B47/0646—Cylinder locks with electromagnetic control by disconnecting the rotor radially
    • E05B47/0649—Cylinder locks with electromagnetic control by disconnecting the rotor radially with a rectilinearly moveable coupling element
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0009—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with thermo-electric actuators, e.g. heated bimetals
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
    • E05B17/2092—Means responsive to tampering or attack providing additional locking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/20—Thermal properties
    • F16C2202/28—Shape memory material

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

A lock changes between locked and unlocked states in response to changing the temperature of a shape metal alloy element (7) within the lock. In one embodiment, the alloy element is in the shape of a wire and is heated by passing an electrical current therethrough. In response, the wire contracts. This contractive movement is arranged to compress a spring (10), thereby intercoupling a normally free-spinning actuator knob (6) with an internal unlocking element, permitting a user to then turn the knob to unlock the lock. The shape memory alloy enables electronic actuation of locks without reliance on solenoids or motors, permitting very small electronic locks (e.g., cylinder locks sized to fit within three-quarters inch holes).
PCT/US1999/010891 1998-05-18 1999-05-17 Electrically controlled lock employing shape memory alloy WO1999060235A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU39990/99A AU3999099A (en) 1998-05-18 1999-05-17 Electrically controlled lock employing shape memory alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8585198P 1998-05-18 1998-05-18
US60/085,851 1998-05-18

Publications (2)

Publication Number Publication Date
WO1999060235A2 WO1999060235A2 (en) 1999-11-25
WO1999060235A3 true WO1999060235A3 (en) 2000-02-03

Family

ID=22194382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/010891 WO1999060235A2 (en) 1998-05-18 1999-05-17 Electrically controlled lock employing shape memory alloy

Country Status (2)

Country Link
AU (1) AU3999099A (en)
WO (1) WO1999060235A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057715C1 (en) * 2000-11-15 2002-07-25 Ikon Ag lock
GB2412413A (en) * 2004-03-26 2005-09-28 Pbt Piezo ceramic actuated clutch in a cylinder lock
DE202004011462U1 (en) * 2004-07-14 2004-09-23 IKON GmbH Präzisionstechnik Lock cylinder with alarm device
DE102004037413A1 (en) * 2004-07-30 2006-03-23 Schlüter Beteiligungs-Kommanditgesellschaft Interlocking system for closure system in e.g. furniture, has blocking device adjustable between blocking and unblocking positions by wire, where wire/device is partially made up of temperature controlled form memory material e.g. polymer
EP1951976A2 (en) * 2005-11-24 2008-08-06 Palladio Systeme GmbH Electromechanical locking cylinder and method for controlling the unlocking of an electromechanical locking cylinder
US9334675B2 (en) * 2012-08-15 2016-05-10 Raytheon Company Passive safety mechanism utilizing self-fracturing shape memory material
US9424722B2 (en) 2014-05-14 2016-08-23 Unlimited Liability, LLC Smart memory material lock devices
US10254097B2 (en) 2015-04-15 2019-04-09 Raytheon Company Shape memory alloy disc vent cover release
US20220074235A1 (en) * 2020-09-05 2022-03-10 Ryan Joongi Cho Automatic door opening device using thermal expansion of shape memory alloy
WO2023142083A1 (en) * 2022-01-29 2023-08-03 深圳市大疆创新科技有限公司 Locking mechanism, motor locking system, and mounting platform

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808989A (en) * 1956-05-25 1959-02-18 Hollins J R Thermo-electrically controlled latch
US4286811A (en) * 1978-03-15 1981-09-01 Schantz Spencer C Bimetal actuated locking device
US4811564A (en) * 1988-01-11 1989-03-14 Palmer Mark D Double action spring actuator
EP0373977A1 (en) * 1988-10-19 1990-06-20 Societe Francaise De Coffres-Forts Caradonna Blocking device for lock bolts
EP0505084A1 (en) * 1991-03-19 1992-09-23 Yale Security Products Limited Lock and combination of lock and key.
US5685148A (en) * 1994-11-14 1997-11-11 Landis & Gyr Technology Innovation Ag Drive apparatus
WO1998036142A1 (en) * 1997-02-14 1998-08-20 Medeco Security Locks, Inc. Electromechanical cylinder lock

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808989A (en) * 1956-05-25 1959-02-18 Hollins J R Thermo-electrically controlled latch
US4286811A (en) * 1978-03-15 1981-09-01 Schantz Spencer C Bimetal actuated locking device
US4811564A (en) * 1988-01-11 1989-03-14 Palmer Mark D Double action spring actuator
EP0373977A1 (en) * 1988-10-19 1990-06-20 Societe Francaise De Coffres-Forts Caradonna Blocking device for lock bolts
EP0505084A1 (en) * 1991-03-19 1992-09-23 Yale Security Products Limited Lock and combination of lock and key.
US5685148A (en) * 1994-11-14 1997-11-11 Landis & Gyr Technology Innovation Ag Drive apparatus
WO1998036142A1 (en) * 1997-02-14 1998-08-20 Medeco Security Locks, Inc. Electromechanical cylinder lock

Also Published As

Publication number Publication date
WO1999060235A2 (en) 1999-11-25
AU3999099A (en) 1999-12-06

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