Abstract: Lock for safety belts having at least two hip strap parts and two shoulder strap parts, said lock comprising a lock housing to be attached to one hip strap part and enclosing a manually releasable lock mechanism (18), a lock tongue (11) to be attached to the other hip strap part, which can be inserted into an insert opening in the lock housing for co-operation with the lock mechanism, and a fitting (12; 13) for each shoulder strap part to be connected with the lock housing and the lock tongue by these elements being mutually lockingly engaged. In the lock housing there is provided a blocking shoulder (41, 42) which is spring-biased to project partly into the insert opening so as to prevent insertion of the lock tongue to engage the lock mechanism.

Abstract: A strap tightener including means to lock an operating lever in a rest position adjacent to an anchoring element for fixedly anchoring the strap tightener.Said means include a hook projecting from a driving pawl on the operating lever for receiving, in the rest position of the operating lever, a holding pawl on the anchoring element.