A prefabricated concrete pool including concrete walls and a pan-formed concrete floor, as well as a method of fabricating a prefabricated swimming pool, the method including erecting an external wall form, erecting an internal wall form opposing the external wall form, and positioning pan forms on a floor form.

Speed reduction gear comprising two intermediate transmission lines, in particular for a turbine engine, comprising an input line (12) and an output line that is driven by the input line via said intermediate transmission lines, said intermediate transmission lines being substantially parallel, characterised in that said reduction gear comprises means for distributing loads between said intermediate lines, said load distribution means comprising swiveling coupling means (30) for rotatably coupling one end of the input line, and oil-damping means (40, 50) for damping radial movements of an opposite end of the input line.

Methods for forming large molded objects from polyurea coatings that are exceptionally durable, rigid and strong enough to remain intact under all conditions involving structural integrity, even without structural reinforcements. Such methods comprise providing a mold or substrate surface onto which the molded object will be formed. A first gelcoat layer is formed upon the mold, upon which is formed a second epoxy/polyurea coating, followed by a third polyurea coating mixed with chopped fiberglass, and a final fourth epoxy/polyurea coating. The combined coatings are allowed to cure and then removed from the mold. Such methods are exceptionally effective in the manufacture of pools and spas.

A process for flexibly making a wetsuit or the like is disclosed by integrally forming a functional surface layer on a rubber foam substrate sheet, thereby rendering the function of the surface layer for the wetsuit or the like.

A water sport article is provided. The water sport article includes a joint formed between a first panel having a greater thickness than a second panel. The joint includes an overlapping interface between the first and second panels where one or more of adhesive bonding, blind stitching, and taping is used to attach the first and second panels at the overlapping interface.

A molded pool step, a method of fabricating the pool step and a method of matching a decorative pattern on the pool step to the decorative pattern on a pool liner is disclosed. The pool step is fabricated by applying a decorative pattern to one surface of a transparent sheet of moldable material; positioning the sheet of material on a pool step mold such that the sheet contacts a molding surface of the pool step mold; molding the sheet of material on the pool step mold such that the decorative pattern is located a distance inwardly from an outer surface of the pool step and is thereby prevented being contacted by pool water or people using the pool. When the pool step is molded and installed the decorative pattern on the three-dimension pool step is substantially continuous with the decorative pattern on the liner adjacent the pool step.

A process for flexibly making a wetsuit or the like is disclosed by integrally forming a functional surface layer on a rubber foam substrate sheet, thereby rendering the function of the surface layer for the wetsuit or the like.

Speed reduction gear comprising two intermediate transmission lines, in particular for a turbine engine, comprising an input line (12) and an output line that is driven by the input line via said intermediate transmission lines, said intermediate transmission lines being substantially parallel, characterized in that said reduction gear comprises means for distributing loads between said intermediate lines, said load distribution means comprising swiveling coupling means (30) for rotatably coupling one end of the input line, and oil-damping means (40, 50) for damping radial movements of an opposite end of the input line.

A device, a method and a movable welding apparatus for thermal joining of respective two material sheets over a connecting piece arranged areally on a bottom side, wherein the material sheets are arranged with a respective side surface facing one another abutting against each other at least partially with a respective bottom side lying areally on a top side of the connecting piece are provided. In particular, the two material sheets and the connecting piece can be joined together in one pass.

A snorkeling tube structure with a tube body and a partition portion is provided. The tube body is formed along an axis and has an outer surface and an inner surface which encircles the axis to define an air passage; the axis includes a curved section. The partition portion is formed integrally with the tube body along the axis, and disposed on the inner surface of tube body to divide the air passage into an intake passage and an outtake passage. A method of manufacturing a snorkeling tube structure is also provided, including the following steps: forming a parison including a first passage and a second passage; placing the parison in a mold cavity; injecting air into the first and second passages to inflate the parison towards a wall of the mold cavity; and removing the inflated parison from the mold to get a snorkeling tube structure.