CA961297A - Shutter structure - Google Patents

Shutter structure

Info

Publication number
CA961297A
CA961297A CA155,500A CA155500A CA961297A CA 961297 A CA961297 A CA 961297A CA 155500 A CA155500 A CA 155500A CA 961297 A CA961297 A CA 961297A
Authority
CA
Canada
Prior art keywords
shutter structure
shutter
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
Application number
CA155,500A
Other versions
CA155500S (en
Inventor
Walter K. French
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.)
CRISIS CONTROL SYSTEMS
Original Assignee
CRISIS CONTROL SYSTEMS
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 CRISIS CONTROL SYSTEMS filed Critical CRISIS CONTROL SYSTEMS
Application granted granted Critical
Publication of CA961297A publication Critical patent/CA961297A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/14—Closures or guards for keyholes
    • E05B17/142—Closures or guards for keyholes with key-operated locks, e.g. padlocks
    • 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
    • Y10T70/7802—Multi-part structures
    • 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
    • Y10T70/7915—Tampering prevention or attack defeating
    • Y10T70/7932—Anti-pick
    • 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
    • Y10T70/7915—Tampering prevention or attack defeating
    • Y10T70/7955—Keyhole guards
    • 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
    • Y10T70/80—Parts, attachments, accessories and adjuncts
    • Y10T70/8432—For key-operated mechanism
    • Y10T70/8649—Keyhole covers
CA155,500A 1971-11-04 1972-11-03 Shutter structure Expired CA961297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19560671A 1971-11-04 1971-11-04

Publications (1)

Publication Number Publication Date
CA961297A true CA961297A (en) 1975-01-21

Family

ID=22722044

Family Applications (1)

Application Number Title Priority Date Filing Date
CA155,500A Expired CA961297A (en) 1971-11-04 1972-11-03 Shutter structure

Country Status (3)

Country Link
US (1) US3714804A (en)
CA (1) CA961297A (en)
GB (1) GB1376520A (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882703A (en) * 1974-01-29 1975-05-13 Robert Hermann Pick-proof lock mechanism
US3959997A (en) * 1974-03-08 1976-06-01 James E. Williams Pick-proof lock system and method for locking a door, window, or other closure
US4070882A (en) * 1976-09-20 1978-01-31 Roberto Ruiz Lock shielding assembly
US4107967A (en) * 1977-12-12 1978-08-22 Grabb William C Access-limiting apparatus
US4350032A (en) * 1980-08-25 1982-09-21 Kochackis Donald G Vending machine lock security cover
US4584855A (en) * 1983-06-29 1986-04-29 Glen Burlingame Pick-proof locking system
US4686840A (en) * 1986-12-24 1987-08-18 Mccarroll Clark Lock guard
DE8705371U1 (en) * 1987-04-10 1988-08-04 Melchert Beschläge GmbH & Co KG, 5628 Heiligenhaus Fittings for doors equipped with locking cylinders or similar.
US4875352A (en) * 1987-05-11 1989-10-24 Schlage Lock Company Construction keying
US4884424A (en) * 1989-05-04 1989-12-05 Meyer David R Mortise cylinder lock guard
DE9314015U1 (en) * 1993-09-16 1995-01-26 Kälber, Frank, 75417 Mühlacker Device for preventing lock use
US6408661B1 (en) * 1999-09-14 2002-06-25 Waterson Chen Padlock assembly with a two-part U-shaped lock casing
US6453706B1 (en) 2000-05-23 2002-09-24 Waterson Chen Padlock with a U-shaped lock casing
US6574999B2 (en) 2000-05-23 2003-06-10 Waterson Chen Padlock with a U-shaped lock casing
US6782723B2 (en) * 2002-04-19 2004-08-31 Waterson Chen Flexible shackle lock with a replaceable shackle and a replaceable lock core
US20080223096A1 (en) * 2007-01-22 2008-09-18 Robert Loughlin Indirect lock interface
US8022299B2 (en) * 2007-11-20 2011-09-20 Zhejiang Kedu Electric Mfg. Co. Ltd Rotatory emergency stop cover with plug-in unit
TWM362277U (en) * 2008-10-01 2009-08-01 Shih-Te Liu Unlock apparatus and key with hidden keyhole
DE202010015828U1 (en) * 2010-11-24 2012-02-27 Drumm Gmbh Protective fitting for windows
US20120144886A1 (en) * 2010-12-13 2012-06-14 Eric Wolfgang Melchior Anti-theft lock assembly for universal key switches and locks
TWI440760B (en) * 2011-12-05 2014-06-11 Shih Te Liu A lock and a key thereof
US10584517B2 (en) * 2017-07-07 2020-03-10 Loto Safety Products Dmcc Locking device
CN107269124B (en) * 2017-07-21 2022-08-19 蔡昌宝 Mechanical lock capable of opening and closing keyhole
USD893281S1 (en) * 2017-10-06 2020-08-18 Loto Safety Products Dmcc Lock device
EP3942126B1 (en) 2019-03-20 2024-04-24 United States Postal Service Attack-resistant and weather-resistant lock

Also Published As

Publication number Publication date
US3714804A (en) 1973-02-06
GB1376520A (en) 1974-12-04

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