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US 5,374,210 AGranted
Breast-stroke fins
OwnerFranco Sardella, Mario Menghi +1inventors
InventorsFranco Sardella, Mario Menghi, Ivo Ferretti
Life of this patent
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Abstract
Breast-stroke swimming fine consisting of a flexible rubber shoe having a short rigid wing at the front with twisted profile and an oscillating rigid wall under one of the fin sides.
Claims1
A fin for swimming breast-stroke consisting of a flexible rubber shoe (1) having a short rigid wing (2) projecting from the front, characterized by a substantially rectangular section and twisted profile having an internal corner bending upwards and an external corner bending downwards;
- the external side of the shoe (1) having underneath a rigid oscillating wall (3) whose upper edge (3a) is characterized by a profile which follows the length of the shoe (1) and then continues along the downward corner of the front wing (2);
- the bottom edge (3b) of the wall (3) being substantially rectilinear;
- said wall (3) joined to the shoe (1) by means of an internal hinge being able to oscillate approximately 90.degree. to move from a vertical position to a substantially horizontal position.
Dependencies are inferred from the claim text.