ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,980, issued on Nov. 18, was assigned to TAIZHOU HENGXIN VALVE TECHNOLOGY Co. LTD. (Taizhou, China).
"Gas cylinder valve assembly" was invented by Wenjin Zhang (Zhejiang, China), Guofu Ying (Zhejiang, China) and Xingyuan Chen (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas cylinder valve assembly includes a valve body and a valve rod, an end of the valve body is configured to connect with a gas cylinder, a first end face of the valve body facing the gas cylinder is configured with a fluid channel, a second end face of the valve body departing from the gas cylinder is defined with a cavity, a first stepped surface is provided at ...