US3266408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duct-diffuser attachment means
Assignee: Dynamics Corp of America
•
Filing: 1964-05-28
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Granted: 1966-08-16
•
Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Carl W Palmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/072; E; E04; E04B; E04B9/00; E04B9/02; E04B2009/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A DUCT-DIFFUSER ATTACHMENT MEANS COMPRISING A FIBROUS DUCT LINER DEFINING A PASSAGEWAY THERETHROUGH, SAID DUCT LINER DEFINING AN ELONGATEED BOTTOM OPENING IN COMMUNICATION WITH SAID PASSAGEWAY, A SHEET METAL SHIELD SURROUNDING SAID LINER AND OF ELONGATED RECTANGULAR PLANFORM WHEN LAID FLAT, SAID SHIELD HAVING MARGINAL SIDE PORTIONS WHICH DEFINE LONGITUDINALLY SPACED OPENINGS, MEANS DEFINING AN ELONGATED AIR DIFFUSER FOR INSERTION IN SAID ELONGATED BOTTOM OPENING, SAID AIR DIFFUSER DEFINING MEANS INCLUDING SIDE FLANGES FOR ENGAGING THE ADJACENT OUTER SURFACE OF THE FIBROUS DUCT LINER, EACH OF SAID SIDE FLANGES INCLUDING UPPER AND LOWER LEGS WHICH DEFINE AN ELONGATED SLOT THEREBETWEEN, A PLURALITY OF RESILIENT U-SHAPED CLIPS ADAPTED TO BE RECEIVED AND HELD IN SAID SLOTS AT SPACED LOCATIONS THEREALONG CORRESPONDING TO THE LONGITUDINAL SPACING BETWEEN SAID SHIELD OPENINGS, EACH OF SAID CLIPS INCLUDING MEANS FOR ENGAGING AN OUTER EDGE OF ONE OF SAID SHIELD OPENINGS WHEREBY SAID SHIELD MARGINAL SIDE PORTIONS ARE ADAPTED TO BE RETAINED IN SAID SLOTS AND SAID DIFFUSER DEFINING MEANS RETAINED IN SAID ELONGATED BOTTOM OPENING.
Claim 2
Dependent Claim
170 words
A DUCT-DIFFUSER ATTACHMENT MEANS COMPRISING A FIBROUS DUCT LINER DEFINING A PASSAGEWAY THERETHROUGH, SAID DUCT LINER DEFINING AN ELONGATEED BOTTOM OPENING IN COMMUNICATION WITH SAID PASSAGEWAY, A SHEET METAL SHIELD SURROUNDING SAID LINER AND OF ELONGATED RECTANGULAR PLANFORM WHEN LAID FLAT, SAID SHIELD HAVING MARGINAL SIDE PORTIONS WHICH DEFINE LONGITUDINALLY SPACED OPENINGS, MEANS DEFINING AN ELONGATED AIR DIFFUSER FOR INSERTION IN SAID ELONGATED BOTTOM OPENING, SAID AIR DIFFUSER DEFINING MEANS INCLUDING SIDE FLANGES FOR ENGAGING THE ADJACENT OUTER SURFACE OF THE FIBROUS DUCT LINER, EACH OF SAID SIDE FLANGES INCLUDING UPPER AND LOWER LEGS WHICH DEFINE AN ELONGATED SLOT THEREBETWEEN, A PLURALITY OF RESILIENT U-SHAPED CLIPS ADAPTED TO BE RECEIVED AND HELD IN SAID SLOTS AT SPACED LOCATIONS THEREALONG CORRESPONDING TO THE LONGITUDINAL SPACING BETWEEN SAID SHIELD OPENINGS, EACH OF SAID CLIPS INCLUDING MEANS FOR ENGAGING AN OUTER EDGE OF ONE OF SAID SHIELD OPENINGS WHEREBY SAID SHIELD MARGINAL SIDE PORTIONS ARE ADAPTED TO BE RETAINED IN SAID SLOTS AND SAID DIFFUSER DEFINING MEANS RETAINED IN SAID ELONGATED BOTTOM OPENING.
References Cited (Backward Citations)
US3088392A
Cited
US3177796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |