Patents by Inventor Sing K. Leung

Sing K. Leung 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: 5560076
    Abstract: A portable vacuum cleaner with removable flashlight is disclosed. The invention is broadly characterized as a vacuum cleaner housing having a front portion and a rear portion with vacuum cleaner components such as an impeller, motor, and filter disposed therein; a stand-alone flashlight housing of conventional design having a contained power source disposed therein; and a connector electrically coupling the contained power source of the flashlight to the vacuum cleaner components so that the vacuum cleaner is operable by utilizing power from the flashlight power source. In an alternative embodiment, the vacuum cleaner has its own dedicated contained power source so that the vacuum cleaner may be operated independently of the flashlight. In preferred form, the flashlight is disposed in the cleaner housing and removably engaged therewith by way of a latch. External contacts on the flashlight beneficially connect with cleaner housing contacts to deliver power to the vacuum cleaner components.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: October 1, 1996
    Assignee: Hoovine Industrial Limited
    Inventor: Sing K. Leung