EP 0058219 B1 19841128 - UNIVERSAL STEPPED INTERNAL GRIP WRENCH
Title (en)
UNIVERSAL STEPPED INTERNAL GRIP WRENCH
Publication
Application
Priority
DE 8104183 U 19810216
Abstract (en)
[origin: EP0058219A1] 1. A universal stepped wrench for radiator connection nipples or return flow nipples, having the following features : it has a square end (1) and an engagement end which, for inch measurement nipples, comprises in a sequence of reducing cross-section, a plurality of hexagonal stepped engagement portions (2, 3, 4, 5) formed with opposite grooves (6, 7, 8, 9) therein, the cross-section of the grooves being semi-circular, characterised by the following steps : at the engagement end, only hexagonal screw head shapes are provided for 1", 3/4", 1/2" and 3/8" nipples and approximately 14 mm, 10 mm, 20 mm and 15-16 mm are used as lengths ; the engagement portion for 1/2" nipples is stepped between thickness of 13.8 and 12 mm and the lengths of these steps are about 14 mm and 6 mm ; the grooves (6, 7, 8, 18, 9) are disposed at two opposite surfaces of the hexagon ; the width of the groove cross-section decreases from 5-6 mm in the case of the thickest engagement portion (2) to 3-3.5 mm at the thinnest portion (5).
IPC 1-7
IPC 8 full level
B25B 13/54 (2006.01); B25B 15/00 (2006.01)
CPC (source: EP)
B25B 15/008 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0058219 A1 19820825; EP 0058219 B1 19841128; AT E10454 T1 19841215; DE 3167413 D1 19850110; DE 8104183 U1 19811112
DOCDB simple family (application)
EP 81103750 A 19810515; AT 81103750 T 19810515; DE 3167413 T 19810515; DE 8104183 U 19810216