Abstract: Attachment device suitable for the reversible connection between a toilet lid and seat and corresponding toilet lid. The device comprises connection means (4) to said lid (2), reversible attachment means (5) for seat (3) and actuating means (6) for said attachment means (5). Thus the device (1) has a release position, in which said attachment means (5) are separated from said seat (3) as a result of activating said actuating means (6), and an attachment position, in which said attachment means (5) attach said seat (3) automatically, at least when said attachment means (5) come into contact with said seat (3) owing to the relative approach between said lid (2) and said seat (3). The invention also provides a toilet lid including the attachment device (1).

Abstract: A fish tank with filling by aspiration of air which includes a lower zone (1) and an upper zone (2), the lower zone (1) being hermetically sealed by its sides and lower part and having has an opening (1a) in its upper part in the manner of a receptacle, while the upper zone (2) is hermetically sealed by its sides and upper part (2c) and has an opening (2a) in its lower part in the manner of an inverted receptacle, and the opening (2a) is comprised at a height slightly below the opening (1a) of the lower zone (1), there being in the upper part (2c) of the upper zone (2) a system of aspiration of air formed by a pump (3) and a non-return valve (5), which is suitable for extracting the air from the upper zone (2), preventing the entry of air or water through the upper part (2c) above said upper zone (2), while in the part (2b) inside of the upper zone (2) there is installed a small grating (4) in order to prevent access of the fish to possible air bubbles inside the upper zone (2).