US3949656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air outlet grill for ventilating the passenger compartment of a motor vehicle
Assignee: Volkswagen AG
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Filing: 1974-05-31
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Granted: 1976-04-13
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Expires: 1994-05-31
Abstract
Abstract An air flow control grill is disclosed having a housing with an input section and an adjusting section downstream with respect to the input section, the adjusting section having a funnel-shaped sectional area, a plurality a vane-shaped air guiding elements arranged in a pair of groups in the adjusting section and being joined together in each group and being pivotally mounted in each group. The air guiding elements in each group being arranged parallelly with respect to each other and each group being adapted to be pivoted independently to positions allowing variation in the direction and speed of airflow.
Inventors
- 👤 Otto Schafer Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:59
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075; B; B60; B60H; B60H1/00; B60H1/34; B60H1/345
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
220 words
A ventilating grill with air flow comprising a housing having an air inlet and a longitudinally spaced air outlet, an input section extending from said inlet towards said outlet, and an air flowing adjusting section extending from said input section to said outlet and having an interior cross-section which diverges in direction from said input section to said outlet; two groups of said vane-shaped air guiding elements in said adjusting section and each composed of a plurality of mutually parallel ones of said air guiding elements; means spacing said air guiding elements of each group apart so as to maintain a mutual parallelism and constant air flow area regardless of the pivotal position of said air guiding elements; means connecting said air guiding elements of each group for joint movement; and common pivot means mounting said air guiding elements of each group for pivotal movement in mutual parallelism about pivot axes located in a common plane extending substantially normal to said direction so that the direction and speed of air flowing through said outlet can be changed by pivoting of said groups of air guiding elements without thereby changing the quantity of air flowing through said outlet since the crosssectional area for passage of the air between adjacent ones of said air guiding elements remains substantially constant during such pivoting.
Claim 2
Dependent Claim
220 words
A ventilating grill with air flow comprising a housing having an air inlet and a longitudinally spaced air outlet, an input section extending from said inlet towards said outlet, and an air flowing adjusting section extending from said input section to said outlet and having an interior cross-section which diverges in direction from said input section to said outlet; two groups of said vane-shaped air guiding elements in said adjusting section and each composed of a plurality of mutually parallel ones of said air guiding elements; means spacing said air guiding elements of each group apart so as to maintain a mutual parallelism and constant air flow area regardless of the pivotal position of said air guiding elements; means connecting said air guiding elements of each group for joint movement; and common pivot means mounting said air guiding elements of each group for pivotal movement in mutual parallelism about pivot axes located in a common plane extending substantially normal to said direction so that the direction and speed of air flowing through said outlet can be changed by pivoting of said groups of air guiding elements without thereby changing the quantity of air flowing through said outlet since the crosssectional area for passage of the air between adjacent ones of said air guiding elements remains substantially constant during such pivoting.
Claim 3
Dependent Claim
38 words
The flow control apparatus as claimed in claim 1, wherein said pivot axes of said groups of air guiding elements are located in the region of the outermost and adjacently lying air guiding elements of said two groups.
Claim 4
Dependent Claim
58 words
The flow control apparatus as claimed in claim 1, wherein said adjusting section comprises a pair of tapering wall portions, at least one of said groups of air guiding elements being arranged for pivotable movement into a position wherein the air guiding elements in said one group lie parallel with the adjacent one of said tapering wall portions.
Claim 5
Dependent Claim
51 words
The flow control apparatus as claimed in claim 2, wherein said adjusting section comprises a pair of tapering wall portions, both groups of air guiding elements being arranged for pivotal movement into positions wherein the air guiding elements of each group lie parallel with the wall portion adjacent the other group.
Claim 6
Dependent Claim
20 words
The flow control apparatus as claimed in claim 1, wherein each group comprises a pair of said air guiding elements.
Claim 7
Dependent Claim
31 words
The flow control apparatus as claimed in claim 1, wherein said mounting means are coupled to the back edges of said adjacently lying air guiding elements of said pair of groups.
Claim 8
Dependent Claim
77 words
The flow control apparatus as claimed in claim 1, wherein additional air guiding elements are provided downstream of said pair of groups of air guiding elements, means for pivotally mounting said additional air guiding elements within said adjusting section for enabling pivoting of said additional air guiding elements in a plane perpendicular to the plane of pivoting of said two groups of air guiding elements, whereby the direction of the air flow is adjustable in various planes.
Claim 9
Dependent Claim
34 words
The flow control apparatus as claimed in 1, wherein said air inlet has a round cross-sectional shape and wherein said adjusting section is funnel shaped and said air outlet has a rectangular exit profile.
Claim 10
Dependent Claim
30 words
The flow control apparatus as claimed in claim1, further comprising operating lever means for each group of air guiding elements, said operating lever means protruding out of said adjusting section.
Claim 11
Dependent Claim
32 words
The flow control apparatus as claimed in claim 7, wherein said additional air guiding elements are manually adjustable and include means for pivotal mounting on said wall portions of said adjusting section.
Claim 12
Dependent Claim
100 words
The flow control apparatus as claimed in claim 3, wherein said mounting means for said groups of air guiding elements are secured to a front and back wall portion of said adjusting section, wherein said groups of air guiding elements in an unpivoted position assume in said adjusting section a position allowing for maximum width of air flow through said flow control apparatus, and wherein said groups of air guiding elements when pivoted away from each other toward said tapering wall portions of said adjusting section are adapted to vary the speed of air flow through said air control apparatus.
References Cited (Backward Citations)
US1170308A
Cited
US2029153A
Cited
GB718400A
Cited
US3240145A
Cited
US3456574A
Cited
US3587442A
Cited
US3641913A
Cited
DK44395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |