US4266470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal air diffuser
Assignee: CA Schroeder Inc
•
Filing: 1979-10-24
•
Granted: 1981-05-12
•
Expires: 1999-10-24
Abstract
Abstract A universal air diffuser comprised of a fiberglass plenum having an open side and means for attaching a duct connector on a closed side opposite the open side. The closed side of the fiberglass plenum is covered with a close-fitting non-porous material which reinforces the fiberglass to allow cutting holes for attachment of air ducts. A plurality of shallow grooves on the exterior of the closed surface provide cutting lines for hole patterns to cut holes for various standard size ducts. The reinforcing material is a fiberglass-reinforced foil which maintains the integrity of the hole cut in the surface and provides a non-porous surface for adhering to duct tape.
Inventors
- 👤 Clifford A. Schroeder
- 👤 Ralph L. Fogg
- 👤 Harry J. Farason
- 👤 Robert E. Voorhees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:46
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/068; F24F13/075; Y; Y10; Y10S; Y10S454/00; Y10S454/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A method of forming an air diffusing apparatus for connection to an air delivery system comprising: forming a plenum of densely compacted, somewhat porous fiberglass material having one side open; covering a substantial portion of the exterior surface of the closed side of said plenum with a thin layer of non-porous material; securely bonding said non-porous material to said exterior surface with an adhesive; cutting a hole through the closed side of said plenum and said non-porous material to match the duct size of said air delivery system; inserting a duct connector into said hole; securing said duct connector to the non-porous covering of said plenum with an adhesive tape; whereby said duct connector will remain secured to said plenum.
Claim 2
Independent Claim
120 words
A method of forming an air diffusing apparatus for connection to an air delivery system comprising: forming a plenum of densely compacted, somewhat porous fiberglass material having one side open; covering a substantial portion of the exterior surface of the closed side of said plenum with a thin layer of non-porous material; securely bonding said non-porous material to said exterior surface with an adhesive; cutting a hole through the closed side of said plenum and said non-porous material to match the duct size of said air delivery system; inserting a duct connector into said hole; securing said duct connector to the non-porous covering of said plenum with an adhesive tape; whereby said duct connector will remain secured to said plenum.
Claim 3
Dependent Claim
50 words
A method according to claim 1 wherein the steps of covering and securing the non-porous material to said plenum include: stretching said non-porous material tightly over said exterior surface; applying heat to said non-porous material during the bonding so that said non-porous material is uniformly bonded to said exterior surface.
Claim 4
Dependent Claim
30 words
A method according to claim 2 in which the step of covering the exterior surface with a non-porous material comprises covering the exterior surface with a fiberglass reinforced metal foil.
Claim 5
Dependent Claim
69 words
A method according to claim 1 wherein the step of securing the connector duct comprises: forming a collar around the periphery of said duct connector; forming a plurality of deflectable tabs around the end of said duct connector which is inserted in said hole; said deflectable tabs having a detent adapted to snap over the edge of said hole and press against the interior surface of said fiberglass plenum.
Claim 6
Dependent Claim
19 words
The method according to claim 1 including attaching a perforated face to the open side of said fiberglass enclosure.
Claim 7
Dependent Claim
17 words
A method according to claim 5 including attaching a plurality of adjustable louvers to said perforated face.
Claim 8
Dependent Claim
32 words
A method according to claim 6 wherein the step of attaching the louvers comprises: riveting said louvers at the center to said perforated face so that the louvers may rotate for adjustment.
Claim 9
Dependent Claim
21 words
A method according to claim 7 including inserting a resilient spacer around said rivet between said louver and said perforated face.
References Cited (Backward Citations)
US2050023A
Cited
US2861510A
Cited
US2900182A
Cited
US3276928A
Cited
US4040213A
Cited
US4159674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |