The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7543942 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 09, 2009

Filed:

Mar. 06, 2006
Applicant:

Seung-hon Yoo, Seoul, KR;

Inventor:

Seung-Hon Yoo, Seoul, KR;

Assignee:

LG Electronics Inc., Seoul, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An automatic door apparatus of a projector is provided. The projector includes a case. The case has a heat discharging opening for discharging heat out of the projector. The automatic door apparatus includes: a frame disposed at the case, the frame facing the heat discharge opening; a door assembly reciprocally movable along the frame in a first direction for opening and closing the heat discharge opening; and a driving unit disposed in the case for moving the door assembly along the first direction, the driving unit moving the door assembly along the first direction from a first position to a second position to open the heat discharge opening in response to a first operation mode of the projector, the driving unit moving the door assembly along the first direction from the second position to the first position to close the heat discharge opening in response to a second operation mode of the projector.


Find Patent Forward Citations

Yoo, Seung-Hon. (2009). Automatic door mechanism for projector (U.S. Patent No. 7543942). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7543942

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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