Patents by Inventor Kam T. Ching

Kam T. Ching 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: 4735132
    Abstract: An insulating enclosure for recessed ceiling exhaust fan is disclosed. The insulating enclosure (10) comprises a rectangular frame (22) attached to the frame (24) of the lower panel (18). The frame (22) of the insulating enclosure (10) fits snugly against the ceiling (16). The insulating enclosure (10) further comprises a removable insulating panel (26) which fits snugly into the rectangular frame (22). One side of the insulating panel (26) has a lip (28) which fits into a channel (30) on the inside of one side of frame (22). Thus, lip (28) may be inserted into channel (30) so as to hold up one side of panel (26) while the other side is pushed into place in its frame (22). After panel (26) is in position it will be held up on one side by lip (28) and on the other side by latch (32).
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: April 5, 1988
    Inventor: Kam T. Ching