1. UNDERWATER GUN
2. UNDERWATER GUN
3. FISH SPEAR
4. SPEARGUN

UNDERWATER GUN

Abstract: PURPOSE: To prevent movement and shaking of fish spear by engaging protruded parts of a fish spear latching tool at the rear end of fish spear with a superimposed spot of piled halved members in the barrel of underwater gun. CONSTITUTION: Protruded parts 7 are laid at the left and the right of a fish spear latching tool 6 at the rear end of a fish spear 5 and positioned at the side of a superimposing position of halved members 2a and 2b of the barrel of a underwater gun 2. A rubber string 8 fixed to the tip part of the barrel of the underwater gun is engaged with the protruded parts and the fish spear latching tool is hooked by an engaging hole 60 of the fish spear latching tool.

UNDERWATER GUN

Abstract: PROBLEM TO BE SOLVED: To provide an underwater gun having a short shooting preparing time by utilizing a free pulley to accelerate a lance and entirely eliminating a reaction at a shooting time without increasing in weight and length the gun with a highly hitting accuracy. SOLUTION: The underwater gun comprises the free pulley provided at a lower part of a gun barrel to be pulled by a rubber. The pulley 31 has a structure in which a driving thread is passed through the pulley 31, raised to an upper part of the barrel and engaged with the lance 20. The pulley 31 is moved only at a distance of 1/n of the thread on the barrel, where (n) is a deceleration ratio. Accordingly, the lance 20 is accelerated at a substantially all long distance of the barrel 11 by utilizing only an effective force from an elastic force limit of the rubber to (n-1)/n.

FISH SPEAR

Abstract: PROBLEM TO BE SOLVED: To enable a fish spear installed with a spearing unit 2 having a spearing and catching blade 22 on the top of a grip rod 1 to be safely used by installing a sheath body 3 always accompanying the main body of the fish spear without hindering in using the fish spear. SOLUTION: This fishing spear is produced by forming the spearing unit 2 by integrally implanting a spearing and capturing blade 22 to a flat resin made-base 21 installed to the top end of a grip rod, installing a sheath body 3 for covering the whole outer periphery of the spearing unit to the spearing unit to be movable with sliding to expose the spearing and capturing blade and installing a holding structure to hold the aforesaid sheath body at a covered position and an exposed position of the spearing and capturing blade.

SPEARGUN

Abstract: PROBLEM TO BE SOLVED: To provide a speargun which enables the setting of the sight lighting a game. SOLUTION: A floodlight projector 15 for lighting focusing a light beam into one column is provided at the tip part of a guide part 11 of a speargun body 10 which is constituted of a guide part 11 to guide and fire a spear 20, a grip part 12 to pull a trigger 12a holding it with a hand, and a butt part 13 which is put on a shoulder to support the body 10 of the speargun firmly. A game to be caught is lit concentratedly by the floodlight projector 15 at the tip part of the guide part 11 of the body 10 of the speargun, and the sight of the speargun is set on the game to fire the spear 20.