Patent ID: 6119559
Filing Date: 2000-09-19
Classification: B25B

Abstract:
A socket wrench extension comprising:an insertion member (2) having a 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);a joint (16, 17, 18,) connecting said insertion member (2) to said receiving member (1), wherein said joint comprises a joint element (16) having a pressure transmission surface (20), and wherein said joint element (16) is connected to said insertion member (2) and is pivotably about an axis of rotation (19) relative to said insertion member (2), wherein said pressure transmission surface (20) is eccentrically arranged relative to an axis of rotation of said joint element (16) and has an eccentric surface point at which a radial width between said pressure transmission surface (20) and said axis of rotation (19) is greatest;a locking element (4) moveably connected within said insertion member (2) so as to have a release position and a locking position, wherein in said locking position said locking element (4) partially projects from said lateral socket head surface (21);a pressure transmission member (8) axially moveable in said insertion member (2);said transmission member (8) having a first end with a key head (14) and having a second end (10);said key head (14) serving as an actuating member for said pressure transmission member (8), wherein said eccentric pressure transmission surface (20) rests against said key head (14), and wherein a greatest radial width extending between said eccentric surface point and said axis of rotation is aligned with said pressure transmission member (8) when said insertion member (2) and said receiving member (1) are axially aligned with one another;a spring (11) mounted in said insertion member (2) and engaging said pressure transmission member (8) so as to force said pressure transmission member (8) in a direction away from said locking element (4) and allow said locking element (4) to reach said rest position;said second end (10) configured to act on said locking element (4) such that an axial movement of said pressure transmission member (8) in a direction toward said locking element (4) pushes said locking element (4) outwardly into said locking position.