Low pressure hoisting air cushion having an airtight chamber with a venting mechanism
AssigneeVepro GmbH
InventorManfred Vetter
Life of this patent
Estimating the term…
Abstract
The low-pressure hoisting air cushion has an airtight chamber the walls of which (20) consist of a coated fabric which is elastic. Inserted into a hole (22) of the wall is a nozzle (24) of a valve. It consists of a tube socket accessible from the outside (26) and a ring-fastener (28) fitted internally. A compensation ring (34) is fitted between the ring-fastener (28) and the wall (20). It has a greater diameter than the ring-fastener (28) and is joined on one side to the ring-fastener (28) and to the wall on the other side (20) in such a way via a ring shaped joining area that there is created between both of them a circular shaped compensation zone (36) to which the compensation ring (34) is not attached on either side (FIG. 1).
Claims8
In a low pressure hoisting air cushion with an hermetically-sealed chamber, a wall of the cushion consists of a fabric covered by a rubber-like material and to a sheet of which is attached a valve containing a nozzle, in said nozzle which consists of a tube-shaped valve socket inserted through an aperture in the cushion wall and a ring-fastener attached to said valve socket at an inner side of said wall, an improvement comprising a flat circular disk compensation ring which is of greater external diameter than the ring fastener, wherein said ring exhibits
- a lower and an upper side,
- a ring-shaped first surface on the lower side whereby the compensation ring is fixed to said ring-fastener,
- a ring-shaped second surface on the upper side of the compensation ring whereby the compensation ring is fixed to the inner surface of the wall surrounding an aperture, and
- a ring-shape compensation area between said first and second ring-shaped surfaces, on which the compensation ring is linked neither with the wall nor with the nozzle.
In a low pressure hoisting air cushion with a hermetically sealed chamber, a wall of the cushion consists of a fabric covered by a rubber-like material and to a shell of which is attached a valve containing a nozzle, in which said nozzle consists of a tube-shaped valve socket inserted through an aperture in the cushion wall and a ring-fastener attached to said valve socket at an inner side of said wall, an improvement comprising a compensation ring which is of greater external diameter than the ring fastener, wherein the compensation ring is composed of at least two perforated disks which form a bellows, and wherein said compensation ring exhibits
- a lower and an upper side,
- one said perforated disk including a ring-shaped first surface on the lower side whereby the compensation ring is fixed to said ring-fastener by vulcanization,
- a second said perforated disk including a ring-shaped second surface on the upper side of the compensation ring whereby the compensation ring is fixed to the inner surface of the wall surrounding an aperture, and
- a ring-shaped compensation area between said first and second ring-shaped surfaces, on which the compensation ring is linked neither with the wall nor with the nozzle.
Dependencies are inferred from the claim text.