Abstract: A diving device includes an air pump with a rigid housing including an interior and an opening closed by a sack-shaped flexible part to form a variable pump volume delimited by the housing and the flexible part. The air pump is designed such that if surrounding water causes overpressure, the flexible part is pressed into the interior, thereby reducing the pump volume, and rests against an inner wall of the housing at least partly in a contact section of the interior. The flexible part can be pulled out of the interior against the overpressure by the muscle force of a diver, thereby increasing the pump volume. The air supply line can be releasably secured to a support device, in particular a waist belt of the support device, centrally behind the back of the diver, and a quick ejection device is provided for releasably securing the air supply line.

Abstract: Diving gear includes an air pump having a rigid housing with an interior space and an opening closed by a bag-like flexible part to form a variable pump volume delimited by the housing and the flexible part. The air pump is configured so that, if surrounding water causes positive pressure, the flexible part is pressed into the interior space, thus reducing the pump volume, and, at least in sections, lies against a housing inner wall in an interior space contact portion. A diver can pull the flexible part out of the interior space counter to the positive pressure, thus increasing pump volume. An air duct is configured so that, during the suction, air flows from an interior space end region toward a start of the interior space at least into a maximum height region, preferably into the interior space start region, and into the interior space.

Abstract: Diving gear includes an air pump having a rigid housing with an interior space and an opening closed by a bag-like flexible part to form a variable pump volume delimited by the housing and the flexible part. The air pump is configured so that, if surrounding water causes positive pressure, the flexible part is pressed into the interior space, thus reducing the pump volume, and, at least in sections, lies against a housing inner wall in an interior space contact portion. A diver can pull the flexible part out of the interior space counter to the positive pressure, thus increasing pump volume. An air duct is configured so that, during the suction, air flows from an interior space end region toward a start of the interior space at least into a maximum height region, preferably into the interior space start region, and into the interior space.

Abstract: A diving device includes an air pump with a rigid housing including an interior and an opening closed by a sack-shaped flexible part to form a variable pump volume delimited by the housing and the flexible part. The air pump is designed such that if surrounding water causes overpressure, the flexible part is pressed into the interior, thereby reducing the pump volume, and rests against an inner wall of the housing at least partly in a contact section of the interior. The flexible part can be pulled out of the interior against the overpressure by the muscle force of a diver, thereby increasing the pump volume. The air supply line can be releasably secured to a support device, in particular a waist belt of the support device, centrally behind the back of the diver, and a quick ejection device is provided for releasably securing the air supply line.

Abstract: A computer has a tablet (4) and a base (6) detachably connected by hinge (14). Receptacles (20) and plugs (22) form electrical and mechanical connections when the tablet (4) and base (6) are coupled. The base (6) is connected via the hinge (14) to a pivoting rail (12) that has plugs (18) and a first contact (26) on a longitudinal side (17) directed toward the tablet (4). The tablet (4) has receptacles (20) and a second contact (28) on a longitudinal side (23) directed toward the pivoting rail (6). The hinge (46) has toothing system pairs (30), a setting device (32) assigned to a toothing system pair (30) and friction hinge elements (38, 40). Each toothing system pair (30) has two toothing system elements (34, 36) arranged symmetrically to a transverse axis (33) and engaging one another. Each friction hinge (32) is assigned at least one toothing system pair (30).

Abstract: A computer has a tablet (4) and a base (6) detachably connected by hinge (14). Receptacles (20) and plugs (22) form electrical and mechanical connections when the tablet (4) and base (6) are coupled. The base (6) is connected via the hinge (14) to a pivoting rail (12) that has plugs (18) and a first contact (26) on a longitudinal side (17) directed toward the tablet (4). The tablet (4) has receptacles (20) and a second contact (28) on a longitudinal side (23) directed toward the pivoting rail (6). The hinge (46) has toothing system pairs (30), a setting device (32) assigned to a toothing system pair (30) and friction hinge elements (38, 40). Each toothing system pair (30) has two toothing system elements (34, 36) arranged symmetrically to a transverse axis (33) and engaging one another. Each friction hinge (32) is assigned at least one toothing system pair (30).

Abstract: A flexible housing is provided for writing implements or for other articles of everyday use, such as bottles, lighters, etc. The housing has at least one separating point to provide a flexible housing that can move independently of the elastic properties of the base material used. The elements of the housing that are separated by the separating point are connected to one another in a form-fitting manner, and the form-fitting region has play. As a result, the housing can move, and the extent of movement is determined by the sum of the selected plays over all separating points. The ability of the housing to move allows an interaction between the housing and the article received by the housing, i.e. a movement of the housing acts on the article received and can produce a desired function (moving a pen refill, producing a flame, ejecting liquid, etc.).