Swim footwear having integral flippers and sound generators includes a first shoe comprising a sole that is pliable. A compartment is positioned in an interior space defined by the sole. An orifice, positioned in the sole, is fluidically connected to the compartment. A noisemaker is coupled to the sole within the orifice, such that air passing from the compartment through the noisemaker generates a sound. A shell that is coupled to the sole has an entry proximate to a back end of the sole. The shell and the sole define a cavity that is complimentary to the foot of the user. The entry is configured for insertion of the user's foot. A flipper extends from a front end of the sole. The flipper is in substantial parallelism with the sole. The footwear comprises a second shoe that mirrors the first shoe.

A swim fin and a method proving thrust propulsion during a swimmer's kicking cycle may include a foot pocket and a fin blade extending from the foot pocket. Fin rails may extend along the lateral edges of the fin blade. The fin rails may include an integral fin spine or separately assembled fin spine configured to provide a swim fin with predetermined hydrodynamic characteristics.

A swim fin and a method proving thrust propulsion during a swimmer's kicking cycle may include a foot pocket and a fin blade extending from the foot pocket. Fin rails may extend along the lateral edges of the fin blade. The fin rails may include an integral fin spine or separately assembled fin spine configured to provide a swim fin with predetermined hydrodynamic characteristics.

A disclosed diver fin includes a blade and a foot pocket, distinct from one another and releasably connected to one another by one or more rails extending from a leading edge of the blade to the foot pocket. The rails extend from either side of the foot pocket and extend parallel to one another at least partway along the length of the blade towards a trailing edge of the blade. Each rail includes two sections: a first rail section, extending from the leading edge of the blade and terminating in a free end, and a second rail section, extending from the foot pocket and terminating in a free end. The free end of one rail section includes a female recess, and the free end of the other rail section terminates in a male extension, slidably receivable in the female recess. The disclosed fin is reconfigurable to accommodate different diving conditions.

A disclosed diver fin includes a blade and a foot pocket, distinct from one another and releasably connected to one another by one or more rails extending from a leading edge of the blade to the foot pocket. The rails extend from either side of the foot pocket and extend parallel to one another at least partway along the length of the blade towards a trailing edge of the blade. Each rail includes two sections: a first rail section, extending from the leading edge of the blade and terminating in a free end, and a second rail section, extending from the foot pocket and terminating in a free end. The free end of one rail section includes a female recess, and the free end of the other rail section terminates in a male extension, slidably receivable in the female recess. The disclosed fin is reconfigurable to accommodate different diving conditions.

A foot inline deflecting swim fin with hinge coupled to a two-leaf-blade fin with embedded channel-hinge with leaves free to rotate from a perpendicular fluid flow configuration upon power stroke to parallel fluid flow configuration upon an upstroke. The hinge-leaf blade will have pivot stops, limiting leaf rotations to accommodate the two stroke swim propulsion, upstroke and power stroke. An embedded unitary elastomeric hinge having integrated channel with channel limiter stops is disclosed.

A foot inline deflecting swim fin with hinge coupled to a two-leaf-blade fin with embedded channel-hinge with leaves free to rotate from a perpendicular fluid flow configuration upon power stroke to parallel fluid flow configuration upon an upstroke. The hinge-leaf blade will have pivot stops, limiting leaf rotations to accommodate the two stroke swim propulsion, upstroke and power stroke. An embedded unitary elastomeric hinge having integrated channel with channel limiter stops is disclosed.

In one aspect, the invention provides a swim fin comprising a foldable fin blade and foot enclosure, and means for releasably securing the foot of a user within said foot enclosure when in use for swimming. When not in use for swimming, the fin is collapsed to demonstrate a substantially flat form and releasably interconnected with another such swim fin to form a loop structure that can be worn as a belt or bandolier, or stored flat and carried within a fanny pack. The combination swim fin belt apparatus allows a user to carry a pair of swim fins conveniently, comfortably and unobtrusively while engaging in activities that take place on or near the water. The fins are thus immediately available to be deployed for swimming, in particular when the user unexpectedly needs to swim long distances or in challenging conditions without the aid of water safety devices.

In one aspect, the invention provides a swim fin comprising a foldable fin blade and foot enclosure, and means for releasably securing the foot of a user within said foot enclosure when in use for swimming. When not in use for swimming, the fin is collapsed to demonstrate a substantially flat form and releasably interconnected with another such swim fin to form a loop structure that can be worn as a belt or bandolier, or stored flat and carried within a fanny pack. The combination swim fin belt apparatus allows a user to carry a pair of swim fins conveniently, comfortably and unobtrusively while engaging in activities that take place on or near the water. The fins are thus immediately available to be deployed for swimming, in particular when the user unexpectedly needs to swim long distances or in challenging conditions without the aid of water safety devices.

A diving flipper (10) for propulsion in water, comprising a shoe part (100) for receiving a foot of a user, and a flipper part (200) having two ribs (210) and a blade (220) fastened to the ribs (210), wherein the ribs (210) are arranged on both sides of a median plane (M) of the diving flipper (10), and each have dorsal and plantar edges (250, 251) in the transverse direction of the ribs (210) and distal and proximal ends (260, 261) in the longitudinal direction of the ribs (210), and fastening devices (300) for fastening the ribs (210) to the shoe part (100),
wherein the dorsal edge (250) of at least one rib (210) is inclined relative to the median plane (M) of the diving flipper (10), so that the dorsal edges (250) have less of a distance to each other than the plantar edges (251) of the ribs (210) to each other, wherein the ribs (210) elastically deform relative to each other at least in sections in the direction of the median plane (M) of the diving flipper (10) in the event of an external application of force to the flipper part (200) in the plantar direction.