Patents by Inventor Hui-Mei Chien

Hui-Mei Chien has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic grease dispenser
    Patent number: 5271528
    Abstract: An automatic grease dispenser using a motor to drive a rotary shaft via a reduction gear set for displacing a pusher downward to squeezing a grease out of a grease pack through an outlet in constant quantity at fixed intervals, and having a positioning element inserted to an longitudinal groove on a piston rod of the pusher to permit only vertical movement but prevent from rotation of the pusher following rotation of the rotary shaft.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: December 21, 1993
    Assignee: Hornche Trading Co., Ltd.
    Inventor: Hui-Mei Chien