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Priority to ES82539UpriorityCriticalpatent/ES82539Y/en
Publication of ES82539UpublicationCriticalpatent/ES82539U/en
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Publication of ES82539YpublicationCriticalpatent/ES82539Y/en
"PERFECTED PNEUMATIC SPEARGUN, FOR SUBMARINE FISHING" characterized by the fact that a harpoon driving piston has been arranged inside the barrel, which guarantees the hermetic closing of the compressed air chamber, which in turn drives it , which recoils, pushed by the harpoon when loading the rifle, until it is placed in the firing position, being equipped, said piston, with elastic seals and sleeve, which adjust to the caliber of the barrel, to avoid pressure losses in the compressed air chamber, taking advantage of the pressure itself to act on the elastic sleeve, at the end of which the piston has a longitudinal inner channel and radial holes, through which the compressed air presses on said sleeve, guaranteeing a hermetic fit, all the better, the higher the air pressure. (Machine-translation by Google Translate, not legally binding)
ES82539U1960-07-231960-07-23
Perfected pneumatic speargun for spearfishing
ExpiredES82539Y
(en)
Improvements in carabines and other instruments that work with compressed air and its projectiles (Machine-translation by Google Translate, not legally binding)