Patents by Inventor Hon Zhang

Hon Zhang 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).

  • Filter and filter cleaning system for a reverse vending machine
    Patent number: 5477953
    Abstract: A commodity densification and storage assembly has a housing having an insert port for receiving a commodity, such as aluminum cans, glass bottles, and PET bottles. The assembly further includes a device for densifying the commodity oriented downstream of the insert port; a storage device for storing the densified commodity; and a pneumatic device for conveying the densified commodity to the storage device. The pneumatic device includes an inlet pipe for receiving the densified commodity from the densifying device. The inlet pipe is in communication with the storage device. The pneumatic device further has a blower for creating suction and an outlet pipe in communication with the storage device and the blower. The blower draws the densified commodity to the storage device through the inlet pipe via suction. Additionally, the pneumatic device includes an air filter system for preventing densified commodity from entering the blower.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: December 26, 1995
    Assignee: Environmental Products Corporation
    Inventors: Ken R. Powell, Hon Zhang