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.:
Date of Patent:
Dec. 08, 1992
Filed:
Dec. 24, 1990
Ernesto E Blanco, Belmont, MA (US);
Peter F Thompson, Cypress, CA (US);
Mitsubishi Electronics America, Inc., Cypress, CA (US);
Abstract
An air control damper assembly for mounting in an air duct comprising a damper blade pivotally mounted within the air duct and means for rotating the damper blade from an open position to a close position. A drive system rotates the damper blade such that the system exerts a high torque and low speed at the beginning and end of the rotation of the blade from one position to the other and a low torque and high speed in the middle of the rotation of the blade between positions. The damper blade is locked in the open and close positions by means of a motor and gear unit. Electrical switches interfacing with a drive disk in the drive system partially controls the energization of the motor.