Global Patent Index - EP 0989925 A1

EP 0989925 A1 20000405 - PYROTECHNICAL UNSCREWING-SCREWING APPARATUS

Title (en)

PYROTECHNICAL UNSCREWING-SCREWING APPARATUS

Title (de)

PYROTECHNISCHES WERKZEUG ZUM SCHRAUBEN UND LOSSCHRAUBEN

Title (fr)

DEVISSEUSE-VISSEUSE PYROTECHNIQUE

Publication

EP 0989925 A1 20000405 (FR)

Application

EP 98932224 A 19980617

Priority

  • FR 9801272 W 19980617
  • FR 9707687 A 19970618

Abstract (en)

[origin: FR2764836A1] The invention concerns a pyrotechnical unscrewing-screwing device consisting essentially of a mass-hammer (6) launched at high speed on an anvil (10), whereof the lever arm is connected to the element to be unscrewed, unlocked, screwed or locked. The reaction is provided by an inertial compensating mass (15) containing the expansion chamber (7) acting as launch tube for the hammer (6). Said compensating mass (15) which is freely rotating is braked and brought back in its initial position by a spring (38). The operating speed of the hammer (6) is provided by the gases of a micro-generator of pyrotechnical gas (2) mounted on a re-chargeable cylinder (16).

IPC 1-7

B25B 27/00

IPC 8 full level

B25B 21/02 (2006.01); B25B 27/00 (2006.01)

CPC (source: EP)

B25B 21/02 (2013.01); B25B 27/0085 (2013.01)

Citation (search report)

See references of WO 9857780A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IT LI LU MC NL PT SE

DOCDB simple family (publication)

FR 2764836 A1 19981224; FR 2764836 B1 20010302; AU 8220098 A 19990104; CA 2294322 A1 19981223; EP 0989925 A1 20000405; JP 2002504867 A 20020212; WO 9857780 A1 19981223

DOCDB simple family (application)

FR 9707687 A 19970618; AU 8220098 A 19980617; CA 2294322 A 19980617; EP 98932224 A 19980617; FR 9801272 W 19980617; JP 50388599 A 19980617