CA976787A - Tamper-resisting screw-threaded plug - Google Patents

Tamper-resisting screw-threaded plug

Info

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
Application number
CA196,136A
Inventor
William Chahley
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.)
CHAHLEY (WILLIAM) Ltd
Original Assignee
CHAHLEY (WILLIAM) Ltd
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 CHAHLEY (WILLIAM) Ltd filed Critical CHAHLEY (WILLIAM) Ltd
Priority to CA196,136A priority Critical patent/CA976787A/en
Priority to GB3656074A priority patent/GB1420588A/en
Priority to US499943A priority patent/US3912116A/en
Priority to JP10179674A priority patent/JPS545468B2/ja
Application granted granted Critical
Publication of CA976787A publication Critical patent/CA976787A/en
Expired legal-status Critical Current

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)
CA196,136A 1974-03-27 1974-03-27 Tamper-resisting screw-threaded plug Expired CA976787A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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
US3912116A (en) 1975-10-14
JPS545468B2 (en) 1979-03-16
GB1420588A (en) 1976-01-07
JPS50128050A (en) 1975-10-08

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