Technisub S.p.a.

La Spirotechnique Industrielle Et Commerciale

Gianni Beltrani

Mirko Bosio

Lugi Ferraro

Bernard Trochon

Jacques Gass

Swimming flipper comprising a blade and a shoe constituted by two distinct and separable elements provided with a mutual disengageable restrained joint coupling for performing an automatic rigid step-in engagement following approach from above downwardly of the shoe relative to the blade according to a translation movement in a direction substantially perpendicular to the plane of the blade, or following a translation-rotation movement.

Swimming flipper

A swimming flipper includes a blade of fairly rigid thermoplastic material and a shoe of elastomeric material or soft thermoplastic rubber. The blade has a partially multi-layered structure including a base layer made of the fairly rigid thermoplastic material and a partial outer layer of a more resilient material which is superimposed on and connected permanently to the base layer.

Swimming flipper with a composite blade and a method for its manufacture

This invention relates to breathing apparatus specially suited to submerged use, of the kind comprising a two-stage pressure reducer whose first stage is connected to the outlet valve of the diving cylinder and is responsible for the reduction from high pressure to medium pressure, while the second stage is associated directly with the mouthpiece and supplied it with air for respiration in response to each inhalatory suction from the user which exceeds a minimum threshold value termed the lifting suction. According to the invention, the first stage includes structure for adjusting the medium pressure, which has a member for direct manual operation which is mounted to be easily accessible and which can be operated by the user even when diving, so that the medium pressure can be adjusted whenever the lifting suction becomes too great, or whenever the effect of changes in the operation of the first stage is to alter it, or before diving in shallows. This first stage may comprise a throttling valve which is loaded by a spring, and the adjusting structure may include a screwed knob which acts on the members for adjusting the setting of the spring.

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Genova, Italy

Gianni Beltrani