FR2456585A1 - Shears for underwater cutting of long cables - has housing with slot for cable cut by shear driven by explosive - Google Patents

Shears for underwater cutting of long cables - has housing with slot for cable cut by shear driven by explosive

Info

Publication number
FR2456585A1
FR2456585A1 FR7912474A FR7912474A FR2456585A1 FR 2456585 A1 FR2456585 A1 FR 2456585A1 FR 7912474 A FR7912474 A FR 7912474A FR 7912474 A FR7912474 A FR 7912474A FR 2456585 A1 FR2456585 A1 FR 2456585A1
Authority
FR
France
Prior art keywords
explosive
slot
housing
shears
washer
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.)
Granted
Application number
FR7912474A
Other languages
French (fr)
Other versions
FR2456585B1 (en
Inventor
Roger Gouallec
Jacques Mariet
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.)
PYROMECA
Original Assignee
PYROMECA
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 PYROMECA filed Critical PYROMECA
Priority to FR7912474A priority Critical patent/FR2456585A1/en
Publication of FR2456585A1 publication Critical patent/FR2456585A1/en
Application granted granted Critical
Publication of FR2456585B1 publication Critical patent/FR2456585B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/006—Explosive bolts; Explosive actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B23D15/145—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure actuated by explosion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/005—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for cutting cables or wires, or splicing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The shears consist of a housing with a slot in which a cable or other workpiece can be clamped by a threaded bolt rotated by a tommy-bar; and a moving shear knife (8) is driven through the cable by a row of explosives including an explosive washer (11) and a starter cartridge (14). The washer (11) consists of an explosive disc surrounded by a polymer ring. A consumable ring (16) is pref. used to start a longitudinal explosive wave. The explosive in the washer is not attacked by water, and contains min. 60% PETN; and cartridge (14) pref. contains a sealed electric detonator contg. several explosives including PETN.
FR7912474A 1979-05-16 1979-05-16 Shears for underwater cutting of long cables - has housing with slot for cable cut by shear driven by explosive Granted FR2456585A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7912474A FR2456585A1 (en) 1979-05-16 1979-05-16 Shears for underwater cutting of long cables - has housing with slot for cable cut by shear driven by explosive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7912474A FR2456585A1 (en) 1979-05-16 1979-05-16 Shears for underwater cutting of long cables - has housing with slot for cable cut by shear driven by explosive

Publications (2)

Publication Number Publication Date
FR2456585A1 true FR2456585A1 (en) 1980-12-12
FR2456585B1 FR2456585B1 (en) 1983-02-04

Family

ID=9225538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912474A Granted FR2456585A1 (en) 1979-05-16 1979-05-16 Shears for underwater cutting of long cables - has housing with slot for cable cut by shear driven by explosive

Country Status (1)

Country Link
FR (1) FR2456585A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806342A1 (en) 2000-03-15 2001-09-21 Lacroix Soc E Device, for controlled shockless rupture of structures, comprises fluid generator connected to energizing system, and flat tube connected to generator between two structure components
FR2897548A1 (en) * 2006-02-20 2007-08-24 Commissariat Energie Atomique Safety system for e.g. fishing boat, has cutter controlled directly by tension detecting unit and by electronic unit, where electronic unit is provided for data processing and for receiving signals from trim and tension detecting units
CN112894895A (en) * 2020-12-25 2021-06-04 中国船舶重工集团有限公司第七一0研究所 Submarine optical cable shears

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1390760A (en) * 1964-04-13 1965-02-26 Cable cutter or halyard working by percussion
GB1026209A (en) * 1963-11-04 1966-04-14 Martin James Improvements in or relating to systems including a compressible pressure fluid-actuated mechanism
US3895552A (en) * 1972-06-26 1975-07-22 France Etat Explosive type severing device for cables, rods and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1026209A (en) * 1963-11-04 1966-04-14 Martin James Improvements in or relating to systems including a compressible pressure fluid-actuated mechanism
FR1390760A (en) * 1964-04-13 1965-02-26 Cable cutter or halyard working by percussion
US3895552A (en) * 1972-06-26 1975-07-22 France Etat Explosive type severing device for cables, rods and the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806342A1 (en) 2000-03-15 2001-09-21 Lacroix Soc E Device, for controlled shockless rupture of structures, comprises fluid generator connected to energizing system, and flat tube connected to generator between two structure components
FR2897548A1 (en) * 2006-02-20 2007-08-24 Commissariat Energie Atomique Safety system for e.g. fishing boat, has cutter controlled directly by tension detecting unit and by electronic unit, where electronic unit is provided for data processing and for receiving signals from trim and tension detecting units
WO2007096307A1 (en) * 2006-02-20 2007-08-30 Commissariat A L'energie Atomique Safety system for a fishing boat
CN112894895A (en) * 2020-12-25 2021-06-04 中国船舶重工集团有限公司第七一0研究所 Submarine optical cable shears

Also Published As

Publication number Publication date
FR2456585B1 (en) 1983-02-04

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Legal Events

Date Code Title Description
CA Change of address
CD Change of name or company name
ST Notification of lapse