CA976787A - Tamper-resisting screw-threaded plug - Google Patents
Tamper-resisting screw-threaded plugInfo
- Publication number
- CA976787A CA976787A CA196,136A CA196136A CA976787A CA 976787 A CA976787 A CA 976787A CA 196136 A CA196136 A CA 196136A CA 976787 A CA976787 A CA 976787A
- Authority
- CA
- Canada
- Prior art keywords
- tamper
- threaded plug
- resisting screw
- resisting
- screw
- 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
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0061—Specially shaped nuts or heads of bolts or screws for rotations by a tool with grooves, notches or splines on the external peripheral surface designed for tools engaging in radial direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA196,136A CA976787A (en) | 1974-03-27 | 1974-03-27 | Tamper-resisting screw-threaded plug |
GB3656074A GB1420588A (en) | 1974-03-27 | 1974-08-20 | Tamper-resisting screw-threaded plug |
US499943A US3912116A (en) | 1974-03-27 | 1974-08-23 | Tamper-resisting screw-threaded plug |
JP10179674A JPS545468B2 (en) | 1974-03-27 | 1974-09-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA196,136A CA976787A (en) | 1974-03-27 | 1974-03-27 | Tamper-resisting screw-threaded plug |
Publications (1)
Publication Number | Publication Date |
---|---|
CA976787A true CA976787A (en) | 1975-10-28 |
Family
ID=4099585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA196,136A Expired CA976787A (en) | 1974-03-27 | 1974-03-27 | Tamper-resisting screw-threaded plug |
Country Status (4)
Country | Link |
---|---|
US (1) | US3912116A (en) |
JP (1) | JPS545468B2 (en) |
CA (1) | CA976787A (en) |
GB (1) | GB1420588A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4397124A (en) * | 1981-06-10 | 1983-08-09 | Kawneer Company, Inc. | Glass jacks for doors, windows, walls, etc. |
US6561000B2 (en) * | 2000-04-28 | 2003-05-13 | At Ing. S.R.L. | Safety pin to be actuated by a magnetic key |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4335375A (en) * | 1978-02-13 | 1982-06-15 | Schaeffer Daniel D | Container for an alarm transmitter adapted for insertion into a wall |
US4473169A (en) * | 1982-02-22 | 1984-09-25 | Fitzgerald Fitz E | Anti-theft plug and fastener |
EP3660331B1 (en) * | 2018-11-27 | 2021-06-16 | Hamilton Sundstrand Corporation | Filter retaining plug and tool |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1422342A (en) * | 1919-12-02 | 1922-07-11 | Darling Joseph | Bung for tank filling and discharge fittings |
US1712361A (en) * | 1927-02-17 | 1929-05-07 | Arthur R Soderquist | Lock closure for ice bags |
US2801022A (en) * | 1951-08-14 | 1957-07-30 | American Flange & Mfg | Indicating screw plug for barrels and other containers and sealing means for said plug |
US2663451A (en) * | 1951-10-10 | 1953-12-22 | Chandler P Yarnall | Closure plug |
US3195762A (en) * | 1962-05-16 | 1965-07-20 | Herbert P Senoff | Closure plug |
GB1114986A (en) * | 1965-09-01 | 1968-05-22 | Rheem Australia Pty Ltd | Improvements in plugs for container closures |
-
1974
- 1974-03-27 CA CA196,136A patent/CA976787A/en not_active Expired
- 1974-08-20 GB GB3656074A patent/GB1420588A/en not_active Expired
- 1974-08-23 US US499943A patent/US3912116A/en not_active Expired - Lifetime
- 1974-09-04 JP JP10179674A patent/JPS545468B2/ja not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4397124A (en) * | 1981-06-10 | 1983-08-09 | Kawneer Company, Inc. | Glass jacks for doors, windows, walls, etc. |
US6561000B2 (en) * | 2000-04-28 | 2003-05-13 | At Ing. S.R.L. | Safety pin to be actuated by a magnetic key |
Also Published As
Publication number | Publication date |
---|---|
JPS545468B2 (en) | 1979-03-16 |
JPS50128050A (en) | 1975-10-08 |
US3912116A (en) | 1975-10-14 |
GB1420588A (en) | 1976-01-07 |
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