US 12,404,975 B2
Low profile flat bombe for LPG storage and method for manufacturing the same
Seong Cheol Cho, Seoul (KR); Sung Won Lee, Hwaseong-si (KR); Ju Tae Song, Hwaseong-si (KR); Seung Hyun Yeo, Gimcheon-si (KR); and Duk Hee Park, Pyeongtaek-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Dae Hung Precision Ind'l Co., Ltd., Seosan-si (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and DAE HUNG PRECISION IND'L CO., LTD., Seosan-si (KR)
Filed on Dec. 6, 2023, as Appl. No. 18/531,177.
Application 18/531,177 is a division of application No. 17/533,683, filed on Nov. 23, 2021, granted, now 11,885,464.
Claims priority of application No. 10-2021-0068155 (KR), filed on May 27, 2021.
Prior Publication US 2024/0102611 A1, Mar. 28, 2024
Int. Cl. F17C 3/00 (2006.01)
CPC F17C 3/00 (2013.01) [F17C 2201/0171 (2013.01); F17C 2203/013 (2013.01); F17C 2205/0103 (2013.01); F17C 2205/0305 (2013.01); F17C 2209/2181 (2013.01); F17C 2209/221 (2013.01); F17C 2209/232 (2013.01); F17C 2221/033 (2013.01); F17C 2227/0135 (2013.01); F17C 2270/0168 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for manufacturing a low profile flat bombe for Liquefied Petroleum Gas (LPG) storage, the method comprising:
preparing a plate body having a designated area;
forming a plurality of first piercing holes and a pump installation hole through a first side region of the plate body used as an upper plate, and simultaneously, forming a plurality of second piercing holes through a remaining side region of the plate body used as a lower plate, using piercing and drawing;
bending first and second side end portions of the plate body to form side plates;
preparing a flat bombe body including the upper plate having the plurality of first piercing holes and the pump installation hole formed therethrough, the lower plate having the plurality of second piercing holes formed therethrough at positions vertically corresponding to the plurality of first piercing holes, and the side plates integrally connecting first and second side end portions of the upper plate and the lower plate by welding the bent first and second side end portions of the bent side plates of the plate body;
welding end plates to front and rear openings of the flat bombe body; and
welding upper end portions of support pipes, configured to connect the upper plate and the lower plate to each other and to maintain a vertical distance between the upper plate and the lower plate, to flange portions of the plurality of first piercing holes, and simultaneously, welding lower end portions of the support pipes to flange portions of the plurality of second piercing holes.