公开(公告)号：US3041893A

公开(公告)日：1962-07-03

申请号：US82930359

申请日：1959-07-24

申请人： JOHNSON ALLAN S

发明人： JOHNSON ALLAN S

IPC分类号： B23B41/08 ,  B23G1/46 ,  F16C19/54

CPC分类号： F16C19/54 ,  B23G1/465 ,  Y10T408/65

公开(公告)号：US3618244A

公开(公告)日：1971-11-09

申请号：US3618244D

申请日：1969-02-10

申请人： JOHNSON ALLAN S

发明人： JOHNSON ALLAN S

IPC分类号： F41C9/06 ,  F41C27/00 ,  F41F1/00

CPC分类号： F41C9/06

摘要： A UNIQUE AND IMPROVED METHOD AND APPARATUS FOR FIRING OR LAUNCHING PROJECTILE UNDERWATER. THE METHOD UTILIZES A WEAPON OR GUN IN WHICH STANDARD BLANK CARTRIDGES ARE USED FOR FIRING OR DISCHARING THE PROJECTILE. THE METHOD INCLUDES THE STEP OF FITTING A WATER TIGHT SLEEVE ONTO THE BLANK CARTRIDGE, ENCLOSING A BODY OF AIR, LOADING THE PROJECTILE SUCH AS A SPEAR INTO THE WEAPON FROM THE MUZZLE END, AND LOADING THE CARTRIDE WITH THE WATER TIGHT SLEEVE INTO A BORE BEHIND THE PROJECTILE. THE INVENTION IS PARTICULARLY ADAPTED FOR SPEAR GUNS FOR UNDERWATER USE USING BLANK CARTRIDGES. THE SLEEVE REFERRED TO ENCLOSING

AIR, EXCLUDES WATER ALLOWING UNDERWATER LOADING AND PROVIDES FOR SUFFICIENT POWER THAT DESIRED LAUNCHING VELOCITY IS IMPROVED IN THAT A SPEAR ARE REALIZED. THE APPARATUS IS IMPROVED IN THAT A BREECH MEMBER IS PROVIDED TO RECEIVE THE CARTRIDE WHICH IS ECCENTRICALLY PIVOTED TO THE RECEIVER WITH THE PIVOT AXIS ABOUT THE BORE IN THE BREECH SO THAT THE BREECH MEMBER IS ROTATED UPWARDLY FOR LOADING THEREBY FACILITATING PRACTICE OF THE METHOD UNDERWATER.