US PATENT SUBCLASS 49 / 74.1
.~ Louver-type closures (e.g., slats or panels)

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

73.1  DF  CLOSURES INTERCONNECTED FOR CONCURRENT MOVEMENT {9}
74.1.~ Louver-type closures (e.g., slats or panels) {11}
77.1  DF  .~.~> Distinct groups of louver-type closures
79.1  DF  .~.~> Manipulation of control louver panel connects or disconnects remaining louver panels
80.1  DF  .~.~> Louver panels move sequentially or independently
81.1  DF  .~.~> Multidirectional louver panel movement
82.1  DF  .~.~> Geared, interconnector or operator
86.1  DF  .~.~> Cable, interconnector or operator
87.1  DF  .~.~> Operating system includes a handle
89.1  DF  .~.~> Operating system includes biasing means
90.1  DF  .~.~> With position holder for operating system
91.1  DF  .~.~> With weather seal feature
92.1  DF  .~.~> Specific louver structure

DEFINITION

Classification: 49/74.1

Louver-type closures (e.g., slats or panels):

(under subclass 73.1) Closures which are superimposed or aligned panels mounted to swing together in the same direction for varying the angle, said panels form a plane or surface defined by the longitudinal terminal edges of said panels and wherein adjacent edges of the panels contact each other in the closed position to effect a closure between them.

(1) Note. Included in this subclass is a shutter-type structure with movable fin-type members (i.e., panel) or window panes (i.e., transparent panel) e.g., jalousie-type.

(2) Note. Included in this subclass are louvered closures which are mounted on a movable frame.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for louver-type closures face-to-face with a protective grille.

64, for louver-type auxiliary closures.

163+, for a closure movable independently of and with another closure. 371, for independently swinging louvers which bar a single opening.

403, for a clip for pivotally mounting a movable louver panel.

SEE OR SEARCH CLASS

160, Flexible or Portable Closure, Partition, or Panel,

130+, for louver devices in which the slats are flexible, or in which the slats are interconnected to each other for relative movement, or in which the slats may be accumulated; i.e., moved toward each other to form a bunch or holding them so accumulated and see section III of the class definition of this class.

362, Illumination,

325, for a projector screen having movable slats; e.g., louvers.

454, Ventilation,

31, for louvers in combination with a fluid moving means (e.g., fan).