Air flow controlling device for motor vehicles

Claim 2

An air flow controlling nozzle apparatus comprising a cylindrical housing having an air input and an air output formed therein, said air input and air output openings lying substantially opposite to each other, a pair of relatively displaceable flow guide members arranged in said housing slidably over an inner surface of said housing, each of said guide members having an inner surface on a side thereof facing the inner space of said housing and an outer surface having a curvature corresponding to a curvature of said housing thereby to facilitate sliding of said guide member over the inner wall of said housing said cylindrical housing having limit stop means and said guide members having abutment means, said guide members being arranged with respect to each other and said inner surface of each guide member being convexly shaped so that a smallest distance between said inner surfaces of said guide members remains constant at any position of said guide members relative to each other, said nozzle including means whereby the discharge velocity of said air flow can be varied by the relative positioning of said guide members with respect to each other without changing the rate of air flow of the nozzle which remains constant, and the direction of said air flow can be also varied by the adjacent positioning of said guide members at various angular positions in said nozzle housing.

Claim 3

The air controlling nozzle apparatus as claimed in claim 1, wherein said air input and air exit opening lie diametrically opposite with respect to each other.

Claim 4

The air controlling nozzle apparatus as claimed in claim 1, wherein said guide members comprise each a guide element lying in the direction of the air flow transversely with respect to said direction, said guide elements in one end position of said guide members lying adjacent with respect to each other and serving as an abutting means for said guide members and defining said end position, said smallest distance between said guide members at said end position being located near said exit opening.

Claim 5

The air controlling nozzle apparatus as claimed in claim 3, wherein said guide elements comprise portions lying parallel with respect to a portion of said guide members, said parallel portion of said guide element serving as the operating handle means for said nozzle apparatus.

Claim 6

The air controlling nozzle apparatus as claimed in claim 4, wherein the curvature of said inner surface of said guide members is tapering off towards said exit opening.

Claim 7

The air controlling nozzle apparatus as claimed in claim 1, wherein said housing comprises end cover walls having guide recesses provided therein for cooperating with projection means provided on said guide members, whereby said projection means slide in said recesses.

Claim 8

The air controlling nozzle apparatus as claimed in claim 6, wherein said recesses in said end wall means are extended in an arch-like fashion, whereby said guide members can slide within said housing over a predetermined arcuate path.

Claim 9

An air flow controlling nozzle apparatus comprising a cylindrical housing having an air input and an air output opening formed therein, said air input and air output oPenings lying substantially opposite to each other, a pair of flow guide members arranged in said housing slibably over an inner surface of said housing, each of said guide members having an inner surface on a side thereof facing the inner space of said housing and an outer surface having a curvature corresponding to a curvature of said housing thereby to facilitate sliding of said guide members over the inner wall of said housing, said guide members being arranged with respect to each other and said inner surface of said guide members being shaped so that a smallest distance between said inner surface of said guide members remains constant at any position of said guide members relative to each other, whereby the air flow through said nozzle apparatus remains constant at any relative position of said guide members but the exit speed of said air flow can be varied by the relative positioning of said guide members with respect to each other, and the direction of said air flow can also be varied by the adjacent positioning of said guide members at various angular positions in said nozzle housing, said guide members each comprising a guide element lying in the direction of the air flow transversely with respect to said direction, said guide elements in one end position of said guide members lying adjacent with respect to each other and serving as an abutting means for said guide members and defining said end position, said smallest distance between said guide members at said and position being located near said exit opening, said guide elements further comprising portions lying parallel with respect to a portion of said guide members, said parallel portions of said guide elements serving as the operating handle means for said nozzle apparatus.

Claim 10

An air flow controlling nozzle apparatus comprising a cylindrical housing having an air input and an air output opening formed therein, said air input and air output oPenings lying substantially opposite to each other, a pair of flow guide members arranged in said housing slibably over an inner surface of said housing, each of said guide members having an inner surface on a side thereof facing the inner space of said housing and an outer surface having a curvature corresponding to a curvature of said housing thereby to facilitate sliding of said guide members over the inner wall of said housing, said guide members being arranged with respect to each other and said inner surface of said guide members being shaped so that a smallest distance between said inner surface of said guide members remains constant at any position of said guide members relative to each other, whereby the air flow through said nozzle apparatus remains constant at any relative position of said guide members but the exit speed of said air flow can be varied by the relative positioning of said guide members with respect to each other, and the direction of said air flow can also be varied by the adjacent positioning of said guide members at various angular positions in said nozzle housing, said guide members each comprising a guide element lying in the direction of the air flow transversely with respect to said direction, said guide elements in one end position of said guide members lying adjacent with respect to each other and serving as an abutting means for said guide members and defining said end position, said smallest distance between said guide members at said and position being located near said exit opening, said guide elements further comprising portions lying parallel with respect to a portion of said guide members, said parallel portions of said guide elements serving as the operating handle means for said nozzle apparatus.

Claim 11

The air controlling nozzle apparatus as claimed in claim 8, wherein said inner surface of each of said guide members is convexly shaped.

Claim 12

The air controlling nozzle apparatus as claimed in claim 8, wherein said air input and air exit opening lie diametrically opposite with respect to each other.

Claim 13

The air controlling nozzle apparatus as claimed in claim 8, wherein the curvature of said inner surface of said guide members is tapering off towards said exit opening.

Claim 14

The air controlling nozzle apparatus as claimed in claim 8, wherein said housing comprises end cover walls having guide recesses provided therein for cooperating with projection means provided on said guide members, whereby said projection means slide in said recesses.

Claim 15

The air controlling nozzle apparatus as claimed in claim 12, wherein said recesses in said end wall means are extended in an arch-like fashion, whereby said guide members can slide within said housing over a predetermined arcuate path.