US3584566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvered air damper and method of producing same
Assignee: Individual
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Filing: 1969-10-06
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Granted: 1971-06-15
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Expires: 1989-10-06
Abstract
Abstract An air damper ventilator combines a fixed blade ventilator with means adaptable to check the flow of air or regulate the flow of air as it passes therethrough. The ventilator is fabricated from fixed blades which interlock with side channels to form a unified structure and movable blades which slide together with the fixed blades in articulated engagement therewith.
Inventors
- 👤 Franics J Mccabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:30
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/082; F24F13/02; F24F13/06; F24F13/075; F24F13/10; F24F13/14; F24F13/1413; F24F13/15
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
141 words
A louvered air damper comprising: a. a frame having opposed side members, each of said side members having at least two inwardly disposed flanges spaced from one another, and an intermediate flange depending inwardly between said last mentioned flanges having at least one notch therein presenting an inwardly disposed open end; b. at least one fixed blade, comprising a plurality of blade portions offset from one another by an intermediate web, said web being connected to said blade portions by risers; said web being disposed in said notch; said blade bearing against said intermediate flange and said first mentioned flanges; c. a continuous hinge element connected to said fixed blade, said hinge element comprising a hook-shaped part; and d. at least one movable blade having a continuous hook-shaped hinge portion interconnected with said hook-shaped part for pivotal movement with respect thereto.
Claim 2
Dependent Claim
141 words
A louvered air damper comprising: a. a frame having opposed side members, each of said side members having at least two inwardly disposed flanges spaced from one another, and an intermediate flange depending inwardly between said last mentioned flanges having at least one notch therein presenting an inwardly disposed open end; b. at least one fixed blade, comprising a plurality of blade portions offset from one another by an intermediate web, said web being connected to said blade portions by risers; said web being disposed in said notch; said blade bearing against said intermediate flange and said first mentioned flanges; c. a continuous hinge element connected to said fixed blade, said hinge element comprising a hook-shaped part; and d. at least one movable blade having a continuous hook-shaped hinge portion interconnected with said hook-shaped part for pivotal movement with respect thereto.
Claim 3
Dependent Claim
20 words
The invention of claim 1 wherein a part of the movable blade overlies part of one said inwardly disposed flanges.
Claim 4
Dependent Claim
11 words
The invention of claim 1 wherein said intermediate web is Z-shaped.
Claim 5
Dependent Claim
20 words
The invention of claim 1 wherein said intermediate web engages said intermediate flange along the portions thereof forming said notch.
Claim 6
Dependent Claim
23 words
The invention of claim 1 wherein said fixed blade engages said intermediate flange at the junctures of said risers with said blade portions.
Claim 7
Dependent Claim
21 words
The invention of claim 1 wherein said blade portions of said fixed blade include oppositely disposed flanges at the ends thereof.
Claim 8
Dependent Claim
32 words
The invention of claim 6 wherein said fixed blade is disposed at an acute angle to the horizontal and the flange at the edge of the upper blade portion extends vertically upwardly.
Claim 9
Dependent Claim
39 words
The invention of claim 1 wherein said notch includes a wider portion remote from the innermost edge of said intermediate flange, and said intermediate web is deformed in the area of said wider portion to engage said intermediate flange.
Claim 10
Dependent Claim
33 words
The invention of claim 1 wherein the pivotal connection between the hook-shaped hinge portion of the blade and hinge element is located between the intermediate flange and one of said inwardly disposed flanges.
Claim 11
Dependent Claim
26 words
The invention of claim 1 wherein the movable blade is disposed to swing toward the fixed blade to which it is connected to open said damper.
Claim 12
Dependent Claim
19 words
The invention of claim 1 wherein means are connected to the movable blades for positioning them in predetermined positions.
Claim 13
Dependent Claim
28 words
The invention of claim 1 wherein said movable blade has a sealing means thereon for coaction with said fixed blade to provide a weather seal for said device.
Claim 14
Dependent Claim
18 words
The invention of claim 12 wherein the sealing means comprises a longitudinally extending jawlike portion on the blade.
Claim 15
Dependent Claim
38 words
The invention of claim 13 wherein one of said fixed blade portions has an upwardly extending flange thereon having an inverted terminal portion, and said jawlike portion on said movable blade is positioned to embrace said terminal portion.
Claim 16
Independent Claim
149 words
A method of assembling a louvered air damper having a frame including opposed side members, each of said side members having at least two inwardly disposed flanges spaced from one another, and an intermediate flange depending inwardly between said last mentioned flanges having at least one notch therein presenting an inwardly disposed open end; and at least one fixed blade, comprising a plurality of blade portions offset from one another by an intermediate web, said web being connected to said blade portions by risers, and a continuous hinge element connected to said fixed blade; and at least one movable blade having a hinge portion; comprising: the steps of sliding said hinge portions and said hinge element together to form a hinge, bowing the fixed blade and inserting its web into the notch of said intermediate flange, and releasing the fixed blade whereby it bears against the inwardly disposed flanges.
Claim 17
Independent Claim
149 words
A method of assembling a louvered air damper having a frame including opposed side members, each of said side members having at least two inwardly disposed flanges spaced from one another, and an intermediate flange depending inwardly between said last mentioned flanges having at least one notch therein presenting an inwardly disposed open end; and at least one fixed blade, comprising a plurality of blade portions offset from one another by an intermediate web, said web being connected to said blade portions by risers, and a continuous hinge element connected to said fixed blade; and at least one movable blade having a hinge portion; comprising: the steps of sliding said hinge portions and said hinge element together to form a hinge, bowing the fixed blade and inserting its web into the notch of said intermediate flange, and releasing the fixed blade whereby it bears against the inwardly disposed flanges.
Claim 18
Dependent Claim
42 words
In the method of claim 15 wherein said notch includes a wider portion remote from the innermost edge of said intermediate flange, the additional step of deforming said intermediate web in the area of said wider portion to engage said intermediate flange.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |