Patents by Inventor Roy C. C. Ping

Roy C. C. Ping 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).

  • Patent number: 5586358
    Abstract: A hand held vacuum cleaner portable by a user during use is disclosed. The vacuum cleaner has a housing defining a main inlet, an accessory inlet, an exhaust outlet, and a vacuum passageway interconnecting the inlets to the outlet. An impeller is driven by a motor to create a stream of air passing downstream selectively from the main inlet or from the accessory inlet to the exhaust outlet. A cover is sealingly and selectively mountable over the main inlet and the accessory inlet for selecting a stream of air passing downstream from one of the main inlet or the accessory inlet. Also, the vacuum cleaner may have a pair of clip assemblies and a strap. The clip assemblies are ideally selectively positionable between a retracted position flush with the contours of the main housing of the vacuum cleaner and an extended position wherein the strap may be attached to the clip assemblies.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: December 24, 1996
    Assignees: Bissell, TTI
    Inventors: Jack Wolfe, Roy C. C. Ping