CA889569A - Frangible lighting pole - Google Patents

Frangible lighting pole

Info

Publication number
CA889569A
CA889569A CA889569A CA889569DA CA889569A CA 889569 A CA889569 A CA 889569A CA 889569 A CA889569 A CA 889569A CA 889569D A CA889569D A CA 889569DA CA 889569 A CA889569 A CA 889569A
Authority
CA
Canada
Prior art keywords
frangible
lighting pole
lighting
pole
frangible lighting
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
CA889569A
Inventor
Terence E. Lewis
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.)
Powerlite Devices Ltd
Original Assignee
Powerlite Devices 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 Powerlite Devices Ltd filed Critical Powerlite Devices Ltd
Application granted granted Critical
Publication of CA889569A publication Critical patent/CA889569A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/003—Access covers or locks therefor
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
    • E01F9/635—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by shearing or tearing, e.g. having weakened zones

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
CA889569A 1969-07-11 1969-07-11 Frangible lighting pole Expired CA889569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA56743 1969-07-11

Publications (1)

Publication Number Publication Date
CA889569A true CA889569A (en) 1972-01-04

Family

ID=4085448

Family Applications (1)

Application Number Title Priority Date Filing Date
CA889569A Expired CA889569A (en) 1969-07-11 1969-07-11 Frangible lighting pole

Country Status (1)

Country Link
CA (1) CA889569A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002421A1 (en) * 1982-01-11 1983-07-21 Minnesota Mining & Mfg Breakaway timber support poles
EP2400060A1 (en) * 2010-06-24 2011-12-28 Hunter Douglas Industries B.V. Utility Pole with frangible tube section

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002421A1 (en) * 1982-01-11 1983-07-21 Minnesota Mining & Mfg Breakaway timber support poles
US4432172A (en) * 1982-01-11 1984-02-21 Minnesota Mining & Manufacturing Company Breakaway timber support poles
EP2400060A1 (en) * 2010-06-24 2011-12-28 Hunter Douglas Industries B.V. Utility Pole with frangible tube section

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