Patents by Inventor ching-shun Chi

ching-shun Chi 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).

  • Swing structure of electric fan head
    Patent number: 5639213
    Abstract: A fan head swing mechanism comprises a swing shaft fastened with the fan head, a rotary plate, a connection rod, and a leg connection seat having a locating rod. The leg connection seat is fastened with the swing shaft. The rotary plate is driven by a motor and is provided with an eccentric shaft which is fastened with one end of the connection rod. The connection rod is provided integrally at another end thereof with a sleeve engageable with the locating rod of the leg connection seat. The sleeve is provided in the inner wall thereof with a protuberance which is movable received in a straight slot and a sectoral slot of the locating rod when the sleeve is engaged with the locating rod. The fan head is caused to swing when the motor is in operation.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: June 17, 1997
    Inventor: ching-shun Chi