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1. (WO1991006399) BROKEN BOLT EXTRACTOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006399 International Application No.: PCT/US1990/006018
Publication Date: 16.05.1991 International Filing Date: 24.10.1990
IPC:
B25B 27/18 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
B
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
27
Hand tools or bench devices, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
14
for assembling objects other than by press fit or detaching same
18
withdrawing broken threaded parts or twist drills
Applicants:
ALDEN CORPORATION [US/US]; Munson and Wolcott Roads Wolcott, CT 06716, US
Inventors:
POLONSKY, Eli; US
Agent:
SEAS, Robert, J., Jr.; Sughrue, Mion, Zinn, MacPeak & Seas 2100 Pennsylvania Avenue, N.W. Washington, DC 20037-3202, US
Priority Data:
430,25802.11.1989US
537,24313.06.1990US
Title (EN) BROKEN BOLT EXTRACTOR
(FR) EXTRACTEUR DE BOULON CASSE
Abstract:
(EN) A broken bolt extractor (10) comprises a right-hand threaded shaft (20) having a left-hand drill bit (14) as its lower end, the bit superposed by a collet-spreading inclined surface (18). The shaft has an invertible collet (24) threaded thereon. The collet tapers toward its lower end and carries thereon exterior left-hand threads (32) and is longitudinally split and expandable. The upper end of the collet carries a drive head (36) structured when the collet is inverted on the shaft to center the drilling as it engages the sides of aligned opening in a mating flange (F).
(FR) Un extracteur (10) de boulon cassé comprend une tige (20) filetée à droite, dotée d'une mèche (14) à gauche, au niveau de son extrémité inférieure, le foret étant superposé par une surface (18) inclinée d'écartement de collier. Sur la tige se trouve un collier (24) inversible, fileté. Le collier est conique vers son extrémité inférieure, et porte des filets (32) gauches extérieurs, il se fend et il se dilate longitudinalement. L'extrémité supérieure du collier porte une tête (36) de vissage, structurée lorsque le collier est inversé sur la tige afin de centrer le perçage, à mesure qu'il vient au contact des côtés d'un orifice aligné dans un bord (F) apparié.
Designated States: AU, BR, CA, FI, HU, JP, KP, KR, MG, NO
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19912580EP0451256JP8015710JPH04502735KR1019920700850AU1990067224