Patent ID: 6170365
Filing Date: 2001-01-09
Classification: B25B

Abstract:
A socket wrench extension comprising:an insertion member (2) having a polygonal socket head (5) and a first connecting portion opposite said polygonal socket head (5);said insertion member (2) having a lateral socket head surface (21);a receiving member (1) having a polygonal receiving socket (15) and a second connecting portion opposite said polygonal receiving socket (15);a tube (3) having an inner diameter matching an outer diameter of said first and second connecting portions and rigidly connecting said insertion member (2) and said receiving member (1) by engaging said first and second connecting portions;a locking member (4) moveably connected within said insertion member (2) such that said locking member (4) partially projects from said lateral socket head surface (21);a pressure transmission member (8) axially moveable in said tube (3) and radially spaced from an inner wall of said tube (3);said pressure transmission member (8) having a first end and having a second end (10);said first end (14) serving as an actuating member for said pressure transmission member (8);said second end (10) transforming axial movement of said pressure transmission member (8), directed toward said insertion member (2), into an outward movement of said locking member (4);said receiving member (1) having an axial bore (12);a guide sleeve (13) inserted in said axial bore (12) of said receiving member (1) for guiding said first end of said pressure transmission member (8);said insertion member (2) having a longitudinal bore (9) in which said second end of said pressure transmission member (8) is received, wherein said pressure transmission member (8) is guided only by said guide sleeve (13) and said longitudinal bore (9) of said insertion member (2);wherein said guide sleeve (13) has an insertion diameter that is greater than a maximum diameter of said pressure transmission member (8).