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Class Information
Number: 454/325
Name: Ventilation > Having inlet airway > Including specific air distributor (e.g., register, etc.) > With adjustable valve > Plural blades pivoting along parrallel axes
Description: Subject matter wherein the airflow regulating means comprises at least two slats or panels rotating about axes extending parallel to one another.

Sub-classes under this class:

Class Number Class Name Patents
454/326 Adjacent blades pivot in opposing directions 10

Patents under this class:

Patent Number Title Of Patent Date Issued
8500528 Combination bearing, linkage pin and shaft coupling for a damper Aug. 6, 2013
8036778 Air-conditioning system Oct. 11, 2011
7967063 Air conditioning apparatus for vehicle Jun. 28, 2011
7241217 Method and apparatus for delivering conditioned air using pulse modulation Jul. 10, 2007
7097558 Register assembly with adjustable faceplate connectors Aug. 29, 2006
7056203 Air-conditioning resistor and operating unit Jun. 6, 2006
7000411 Apparatus for controlling outdoor unit's louver blades and its method Feb. 21, 2006
6997799 Damper including a stepper motor Feb. 14, 2006
6692350 Ergonomically accessible airflow control mechanism for a register Feb. 17, 2004
6537146 Air register Mar. 25, 2003
6503140 Air register Jan. 7, 2003
6435962 Operating mechanism for vent louver Aug. 20, 2002
6322442 Air duct register system Nov. 27, 2001
6309297 Register assembly for covering an air duct opening Oct. 30, 2001
6270401 Air diffuser with unitary valve assembly Aug. 7, 2001
6135880 Adjustable register incorporating a toggle-joint mechanism to move slats thereof between open and closed positions Oct. 24, 2000
6066044 Vent assembly May. 23, 2000
6033304 Register and method of assembly Mar. 7, 2000
5984776 Register assembly for covering an air duct opening Nov. 16, 1999
5971847 Airway vent Oct. 26, 1999
5850742 Apparatus and method of controlling automatic door of air conditioner Dec. 22, 1998
5588911 Mechanical control for central air conditioners' outlets Dec. 31, 1996
5345966 Powered damper having automatic static duct pressure relief Sep. 13, 1994
5312298 Floor vent May. 17, 1994
4263842 Adjustable louver assembly Apr. 28, 1981
3937133 Outlets for conditioned air and mounting frames therefor Feb. 10, 1976

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