Patent attributes
An improved seat belt buckle assembly (10) for use with a tongue (2) of a seat belt during use, locking the latch (20) and control lever (40) in the unlatched position, but when the buckle is latched and exposed to a rapid deceleration a mass (60) slides compressing a lower spring (52) into the frame (12) moving the mass (60) to occupy the space directly under stop surfaces (45) of control lever arms (42, 43) of a control lever (40) blocking downward movement and preventing a locking bar (18) from leaving a horizontal portion of L-shaped slots (9) preventing movement of the latch (20) into the unlatched position. The mass (60) is preferably attached to an ejector (30), the ejector (30) fits into a slot (62) in the mass (60) and extends into a pair of horizontal slots (31) on the frame, one horizontal slot (31) being on each vertical side (6, 7) of the frame (12). The ejector (30) secures the mass (60) in the frame (12) limiting the mass (60) to horizontal forward and rearward sliding movements.
