-
公开(公告)号：US20210316973A1
公开(公告)日：2021-10-14
申请号：US17209217
申请日：2021-03-23
发明人： Guoliang HE , Weixiang HE , Gang SUN , Guannan LU , Hangfeng LI
摘要： A jack with a protecting structure of a pump piston and a method for using the same are provided. The jack includes a housing, a base located inside the housing, and the protecting structure. An oil cylinder and a pump body are installed on the base. A pump piston is installed on the pump body. A spring is installed on the pump piston and the pump body. A stop protrusion is arranged on the pump piston. The protecting structure includes a dustproof sleeve and a wool felt. The dustproof sleeve is installed on the base and the pump piston. One end of the dustproof sleeve is detachably fixed on the base through a fastener. The other end of the dustproof sleeve is connected to an end portion of the pump piston. The shape of the dustproof sleeve is set into a wavy type.
-
公开(公告)号：US20220098014A1
公开(公告)日：2022-03-31
申请号：US17467476
申请日：2021-09-07
发明人： Yufeng HE , Weixiang HE , Gang SUN
IPC分类号： B66F3/26
摘要： A jack with a double high-pressure structure is provided, including a base, a pump body installed on the base, an oil cylinder, an oil drain valve, and a safety valve. The base is provided with a low-pressure check valve and a high-pressure check valve A. It is characterized in that a high-pressure check valve B is also installed on the base. The present invention can improve the safety performance during use and prolong the service life.
-
搜索结果
2 条记录 (耗时 0.012 秒)
