Abstract: An insole which is substantially adapted to the profile of a human foot and comprises, in the mid-foot region, an elastically deformable arch facing the foot, characterized in that a reinforcement element is located on the side of the insole facing away from the foot in the region of the arch, said reinforcement element being made of a different material with a greater stiffness than the material of the insole and having a convex shape.

Abstract: This invention relates to an insole which is essentially adapted to the profile of a human foot and has, in the middle foot area, an elastically deformable dome-like arch that faces the foot. To reduce the technical and financial production expense of an insole and to improve the wearing comfort of a shoe through an insole, in particular an insertable insole and to improve the fitting shape of the shoe by means of an insole and to feed air into and out of the shoe interior with the aid of an insole, the insole according to the invention exhibits in the region of the elastically deformable arch at least one ventilation opening, which during walking causes ventilation of the shoe interior in conjunction with the elastically deformable arch.

Abstract: In a sealing element for use in particular in high vacuum technology, a moveable closure unit (4) is closed tightly against a fixed outer flange (1) whose sealing surface (2) is preferably conical. The closure unit (4) comprises a hat-shaped outer part (5) with a flat base (8) and a sealing surface (7) around the periphery; and an inner part (6) concentric with, and smaller in diameter than the outer part. Between them are one or more spring elements (10), arranged as segments on a ring, which act as a disk spring; these are supported by the outer and inner edges on the outer (5) and inner (6) parts. The spring elements (10) are mounted at an oblique angle radially towards the base (8) of the outer part (5) in such a way that when the base (8) of the outer part is subjected to pressure, the radial force is produced at the sealing surface (7) of the elastically deformable outer part (5) and its base (8) is pressed inwards.

Abstract: A slide valve includes a valve housing and a valve closure control device which is laterally movable within the valve housing, the valve housing including two parallel flange members which have openings therein and seating surfaces on the facing sides thereof and the valve closure control device including a frame, two parallel shut-off plates mounted on the frame, the shut-off plates having triangularly-arranged cam projections on the facing sides thereof, and two shafts mounted on the frame between the shut-off plates, each shaft mounting three roll bodies for cooperation with two associated cam projections on one shut-off plate and a cam projection on the other shut off plate to move the plates apart and against the seating surfaces on the flange members when the valve closure control device is fully inserted within the valve housing and thus at its closure position therewithin.

Abstract: The apparatus comprises a disk shaped shut-off flap located in the passage of a main body. The shut-off flap is mounted such to a rocking shaft that the flap can be lifted off its seat during one phase of movement of the rocking shaft and may be rotated into an open position during a further phase of movement of the rocking shaft. The operating means comprises a linear drive in the shape of a control rod including a control groove. A follower and driving means engages the control groove and the shut-off flap. Accordingly the shut-off flap is guided for above lift off and rotating movements. This linear drive allows an impeccable sealing between the inner space of the shut-off apparatus and the environment.

Abstract: The apparatus comprises a disk shaped shut-off flap located in the passage of a main body. The shut-off flap is mounted such to a rocking shaft that the flap can be lifted off its seat during one phase of movement of the rocking shaft and may be rotated into an open position during a further phase of movement of the rocking shaft. The operating means comprises a linear drive in the shape of a control rod including a control groove. A follower and driving means engages the control groove and the shut-off flap. Accordingly the shut-off flap is guided for above lift off and rotating movements. This linear drive allows an impeccable sealing between the inner space of the shut-off apparatus and the environment.