1
Masao Fujita, Kiyoshi Kitaori: Screw plug assembly. Nissan Shatai Kabushiki Kaisha, Kokusan Kinzoku Kogyo Kabushiki Kaisha, Fleit & Jacobson, November 4, 1980: US04231240 (24 worldwide citation)

The invention consists of a screw cap assembly including a manually operable handle piece rotatable in both directions, a cylindrical case mechanically coupled with the handle piece for unitary rotation therewith, a key-operable cylinder lock mounted in the cylindrical case and capable of rotating o ...


2
Li Demou, Li Zeping, Wang Jian, Yu Ping, Xie Zhi, Li Chonghua, Liu Liang, Jiang Shan, Han Pengfei: Balanced air-controlled one-way check valve. Jiangnan Industries Group, li chuanzhong, July 4, 2012: CN201110435792

The invention relates to a balanced air-controlled one-way check valve which is mainly characterized by comprising a cylinder assembly, a valve assembly, a valve body 15, a manual switch assembly 16 and a safety screw plug assembly 24, wherein the upper part of the valve body 15 is provided with a l ...