CA961297A - Shutter structure - Google Patents
Shutter structureInfo
- 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
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
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)
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 |
US6574999B2 (en) | 2000-05-23 | 2003-06-10 | Waterson Chen | Padlock with a U-shaped lock casing |
US6453706B1 (en) | 2000-05-23 | 2002-09-24 | 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 |
CA3133440A1 (en) | 2019-03-20 | 2020-09-24 | United States Postal Service | Attack-resistant and weather-resistant lock |
-
1971
- 1971-11-04 US US00195606A patent/US3714804A/en not_active Expired - Lifetime
-
1972
- 1972-10-19 GB GB4827072A patent/GB1376520A/en not_active Expired
- 1972-11-03 CA CA155,500A patent/CA961297A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3714804A (en) | 1973-02-06 |
GB1376520A (en) | 1974-12-04 |
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