GB1125930A - Security bolts - Google Patents
Security boltsInfo
- Publication number
- GB1125930A GB1125930A GB4394366A GB4394366A GB1125930A GB 1125930 A GB1125930 A GB 1125930A GB 4394366 A GB4394366 A GB 4394366A GB 4394366 A GB4394366 A GB 4394366A GB 1125930 A GB1125930 A GB 1125930A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bolt
- recess
- cavity
- security bolts
- head
- 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
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0046—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool having one eccentric circular or polygonal recess or protrusion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
Abstract
1,125,930. Tamper proof bolts. DORMAN & SMITH Ltd. 18 Aug., 1967 [1 Oct., 1966], No. 43943/66. Heading F2H. [Also in Division B4] A bolt 10 has an axial circular cavity 16 in its enlarged head 15 and a recess 17 in the base of the cavity, the recess being offset relative to the axis of the bolt. The head of the bolt is tapered to prevent it being gripped by pliers so that the only means of tightening or undoing the bolt is a key 18 having a peg 22 which engages the recess 17.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4394366A GB1125930A (en) | 1966-10-01 | 1966-10-01 | Security bolts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4394366A GB1125930A (en) | 1966-10-01 | 1966-10-01 | Security bolts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1125930A true GB1125930A (en) | 1968-09-05 |
Family
ID=10431053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4394366A Expired GB1125930A (en) | 1966-10-01 | 1966-10-01 | Security bolts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1125930A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4258596A (en) * | 1978-01-18 | 1981-03-31 | Southco, Inc. | Tamper-resistant fastener |
GB2197382A (en) * | 1986-11-15 | 1988-05-18 | Jon Ross Malone | Sailboard anti-theft device |
-
1966
- 1966-10-01 GB GB4394366A patent/GB1125930A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4258596A (en) * | 1978-01-18 | 1981-03-31 | Southco, Inc. | Tamper-resistant fastener |
GB2197382A (en) * | 1986-11-15 | 1988-05-18 | Jon Ross Malone | Sailboard anti-theft device |
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