Abstract: A container having a pouring spout for pouring oil into an engine (14). The container has a cap (24) which is screwed onto a neck portion (16) of the container. The cap (24) has radial ribs (32) tapering toward the cap bottom (28). The end of the neck portion (20) has a reduced diameter and is aligned with a breakable portion (28a) formed in the cap bottom. In use, the container is inserted in an inverted position so that the spout attends into an inlet opening (11) of the engine. Radial ribs (32) are wedged in the inlet opening by applying an axial force to the container body (10), and the body is then rotated with respect to the immovable cap (24). As a result of this rotation, the reduced-diameter portion (20) of the container neck moves axially toward the breakable portion (28a) until the portion (20) breaks it, thus opening the container and allowing the oil to flow into the engine oil tank (14).

Abstract: A safety core (10) for a tire valve comprises a head portion (12) screwed into the valve's housing (28) so that it is sealed against the inner wall of the housing by compressing a seal ring (36) located in an annular groove (34) formed in a tapered portion (32) of the head part. Inserted into the head part is a cylindrical body (14) which contains a ball-type check valve (20). A ball (84) of the valve is constantly pressed to a seat (80) installed on the rear end of an adjustment pipe (16), the latter being screwed into the rear end of the body (14). The rear end protrudes through the head portion (12) and has a stop (58) on its end. A spring (62), located between the stop (58) and the outer end face of the head portion (12), constantly urges the front end of the head portion (12) to a valve seat formed on a shoulder (68) of a large-diameter portion (66) of the cylindrical body.