GB1420588A - Tamper-resisting screw-threaded plug - Google Patents

Tamper-resisting screw-threaded plug

Info

Publication number
GB1420588A
GB1420588A GB3656074A GB3656074A GB1420588A GB 1420588 A GB1420588 A GB 1420588A GB 3656074 A GB3656074 A GB 3656074A GB 3656074 A GB3656074 A GB 3656074A GB 1420588 A GB1420588 A GB 1420588A
Authority
GB
United Kingdom
Prior art keywords
tamper
threaded plug
resisting screw
wrench
division
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
GB3656074A
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 Ltd WILLIAM
Original Assignee
CHAHLEY Ltd WILLIAM
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 Ltd WILLIAM filed Critical CHAHLEY Ltd WILLIAM
Publication of GB1420588A publication Critical patent/GB1420588A/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

Abstract

1420588 Socket wrench WILLIAM CHAHLEY Ltd 20 Aug 1974 [27 March 1974] 36560/74 Heading B3N [Also in Division F2] A socket wrench 26 for turning a tamperresistant screw plug (see Division F2) is tubular with three equispaced inwardly extending fingers or ribs 27 inside its end. The wrench is rotatable by any suitable known tool.
GB3656074A 1974-03-27 1974-08-20 Tamper-resisting screw-threaded plug Expired GB1420588A (en)

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
GB1420588A true GB1420588A (en) 1976-01-07

Family

ID=4099585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3656074A Expired GB1420588A (en) 1974-03-27 1974-08-20 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)

Families Citing this family (5)

* 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
US4397124A (en) * 1981-06-10 1983-08-09 Kawneer Company, Inc. Glass jacks for doors, windows, walls, etc.
US4473169A (en) * 1982-02-22 1984-09-25 Fitzgerald Fitz E Anti-theft plug and fastener
AR021590A3 (en) * 2000-04-28 2002-07-31 At Ing S R L A SAFETY BOLT TO BE OPERATED BY A WRENCH AND DRIVE WRENCH
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

Also Published As

Publication number Publication date
JPS50128050A (en) 1975-10-08
JPS545468B2 (en) 1979-03-16
US3912116A (en) 1975-10-14
CA976787A (en) 1975-10-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee