Abstract: A power transmission chain has opposed first link members arranged alternately with opposed second link members along the length of the chain. The first and second link members are connected to one another in an articulated manner such that there is rolling contact between the two at respective bearing surfaces. The second link members are disposed freely between adjacent pins. Each first link member is connected in a friction fit to each end of the pin. The bearing surfaces run transverse to the longitudinal axis of the chain. The design reduces the polygonal effect by providing for two articulating joints between adjacent pins and significantly reduces wear by providing rolling contact at the bearing surfaces.

Abstract: The invention relates to a non-refilling device for insertion in the neck portion (3) of a container for liquids for example, fine spirits, the device comprising a sleeve member (4) adapted to be a secure fit within the neck portion (3), a one-way valve arrangement (6, 8), a pouring member (10) and a closure member (16, 20). While the device is being applied to the neck portion of the filled container, all the above components are maintained in an assembled condition by engagable members (28, 32) on the closure member (16) and the pouring member (10). When the container is opened normally, the action of unscrewing the closure member (16, 20) is adequate to overcome the action of the engagable members (28, 32) so that the container may be opened and resealed in a conventional manner.