초록 ▼

Spear-bladed swim fins provide new means by which divers may propel themselves through the water. Spear-bladed swim fins generally provide a lower surface area to a higher perimeter edge length. By reducing the effective surface area of the swim fin, more propulsive force is delivered by the fin for

Spear-bladed swim fins provide new means by which divers may propel themselves through the water. Spear-bladed swim fins generally provide a lower surface area to a higher perimeter edge length. By reducing the effective surface area of the swim fin, more propulsive force is delivered by the fin for each kick of the diver. Such dispersion of the diver's energy may be particularly advantageous where stationery swimming is required, as for underwater photography. Additionally, vortices generated during swim kicks may advantageously complement the operation of the swim fin. In the first embodiment, the spear blade is narrow. In a second embodiment, the spear blade is wider but has a larger channel through which water can flow to eliminate dead spots on the lee side of the fin. Fork extension stubs present with the foot pocket of the swim fin provide an adjustable means by which the flexing, bowing, and/or geometry of the swim fin blade may be adjusted according to the preferences and/or demands of the diver.

대표청구항 ▼

Spear-bladed swim fins provide new means by which divers may propel themselves through the water. Spear-bladed swim fins generally provide a lower surface area to a higher perimeter edge length. By reducing the effective surface area of the swim fin, more propulsive force is delivered by the fin for

Spear-bladed swim fins provide new means by which divers may propel themselves through the water. Spear-bladed swim fins generally provide a lower surface area to a higher perimeter edge length. By reducing the effective surface area of the swim fin, more propulsive force is delivered by the fin for each kick of the diver. Such dispersion of the diver's energy may be particularly advantageous where stationery swimming is required, as for underwater photography. Additionally, vortices generated during swim kicks may advantageously complement the operation of the swim fin. In the first embodiment, the spear blade is narrow. In a second embodiment, the spear blade is wider but has a larger channel through which water can flow to eliminate dead spots on the lee side of the fin. Fork extension stubs present with the foot pocket of the swim fin provide an adjustable means by which the flexing, bowing, and/or geometry of the swim fin blade may be adjusted according to the preferences and/or demands of the diver. ncorporated herein by this reference thereto. he connecting block of the base member includes a top with two opposite sides each having a rail laterally extending from the connecting block, and the clamping block includes a T-shaped groove having a horizontal portion defined to receive the rails of the connecting block and a vertical portion defined to receive the connecting block of the base member. 3. The electric cord connector as claimed in claim 2, wherein the presser of the clamping block longitudinally extends into the T-shaped groove in the clamping block and is movably received in the groove in the base member. 4. The electric cord connector as claimed in claim 1, wherein the clamping block comprises a tab laterally extending to correspond to and be received in the cavity in the limit stop. 5. The electric cord connector as claimed in claim 4, wherein the connecting block of the base member includes a top with two opposite sides each having a rail laterally extending from the connecting block, and the clamping block includes a T-shaped groove having a horizontal portion defined to receive the rails of the connecting and a vertical portion defined to receive the connecting block of the base member. 6. The electric cord connector as claimed in claim 5, wherein the presser of the clamping block longitudinally extends into the T-shaped groove in the clamping block and is movably received in the groove in the base member.