Patent ID: 7703216
Filing Date: 2010-04-27
Classification: G01B

Abstract:
1. A measuring tape device comprises of: a casing that contains a tape; a bobbin that is set in the middle part of the casing along with a spring; a coilable tape, one end of which is connected to the spring and is wound around the bobbin, and the other end extended outside the casing through an to aperture that is formed at the lower portion of casing, and this end is also connected to a hook member; the measuring tape device is characterized as that it has an automatic locking mechanism, such automatic locking mechanism comprises of: a stopper, comprises of: an end portion that is placed above the linear portion of the tape inside the casing; an actuator that extrudes outside and settles at the surface of the casing; a linkage portion that connects the end portion to the actuator; a hinge joint, for fixating the stopper in place within the casing, and it allows the stopper to rotate; and an elastic member, that is placed between the casing and the linkage portion.