US 12,251,806 B2
Underwater air tacker
Kwan Huo, Gwangju (KR); Jung Jae Cho, Gwangju (KR); and Sang Jeong, Seoul (KR)
Assigned to 4B DREAM CO., LTD., Jangseong-gun (KR)
Appl. No. 18/569,881
Filed by 4B DREAM Co., Ltd., Jangseong-gun (KR)
PCT Filed Oct. 12, 2022, PCT No. PCT/KR2022/015324
§ 371(c)(1), (2) Date Dec. 13, 2023,
PCT Pub. No. WO2023/085614, PCT Pub. Date May 19, 2023.
Claims priority of application No. 10-2021-0152861 (KR), filed on Nov. 9, 2021.
Prior Publication US 2024/0278400 A1, Aug. 22, 2024
Int. Cl. B25C 1/04 (2006.01); B25C 7/00 (2006.01)
CPC B25C 1/04 (2013.01) [B25C 7/00 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An underwater air tacker (T) comprising:
a hammer operating means (100) comprising a cylinder (101) therein, a piston (102) installed in the cylinder (101) and reciprocating linearly in the cylinder (101), and a hammer (103) having a bar shape in which a rear end is fixed and coupled to a front surface of the piston (102) to reciprocate linearly along the piston (102), wherein the piston (102) and the hammer (103) are moved forward by using a driving force of compressed air introduced into the cylinder (101) from the outside when an attached trigger (104) is pulled, and a front end of the hammer (103) is exposed to the outside through a hammer through-hole (105) defined in a front surface to hit a rear end of a tacker pin disposed in front of the hammer through-hole (105);
a rear cover (300) mounted to a rear end of the hammer operating means (100) and having a compressed air outlet (301) so that the compressed air that moves the piston (102) forward is discharged to the outside of the hammer operating means (100);
a magazine (500) which is mounted to the hammer operating means (100) and in which the tacker pin is stored; and
a guide means (700) installed in front of the hammer through-hole (105) to align the tacker pin in front of the hammer through-hole (105) so that the tacker pin supplied from the magazine (500) is hit and fired by the forwardly moved hammer (103),
the underwater air tacker (T) further comprising:
a water infiltration prevention means (1) that is a rubber O-ring installed in the hammer through-hole (105) to prevent water from infiltrating into the hammer operating means (100) through the hammer through-hole (105) while allowing the hammer (103) to pass therethrough;
a water infiltration prevention exhaust cover (2) mounted to a rear surface of the rear cover (300) and having at least two exhaust holes (21) so that the compressed air discharged through the compressed air outlet (301) is exhausted;
a compressed air discharge valve (3) mounted in the exhaust hole (21) to prevent the water from infiltrating through the exhaust holes (21) by opening the exhaust hole (21) to discharge the compressed air above a predetermined pressure when the compressed air above a predetermined pressure is discharged through the compressed air outlet (301) and closing the discharge holes (21) when a pressure of the compressed air discharged through the compressed air outlet (301) is reduced below a predetermined pressure; and
a piston front-air discharge means (4) configured to allow the piston (102) to be moved forward smoothly by transferring air in the cylinder (101) disposed in front of the piston (102) into the water infiltration prevention exhaust cover (2) when the piston (102) is moved forward by a driving force of the compressed air.