US3906846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dirt control shield for an air outlet
Assignee: Individual
•
Filing: 1973-06-20
•
Granted: 1975-09-23
•
Expires: 1993-06-20
Abstract
Abstract A shield which is mounted about an airflow outlet in a room wall for reducing the accumulation of air carried dirt upon the room wall adjacent the outlet. The shield includes a reticulated side wall and deflector plate. The deflector plate serves to direct a portion of the air flowing from the outlet laterally through the openings in the shield side wall and parallel along the room wall.
Inventors
- 👤 Charles C Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
A shield mounted about an airflow outlet in a room wall for reducing the accumulation of air carried dirt upon said room wall adjacent said outlet, said shield comprising a side wall surrounding said outlet and extending substantially perpendicularly outwardly from said room wall, said shield including a deflector plate means carried at the inside of said side wall spaced from said room wall, said side wall having a plurality of openings formed therein, said deflector plate means extending around said outlet and projecting outwardly from the inside of said side wall and away from said room wall wherein a portion of the air from said outlet contacts said deflector plate means and is diverted laterally through said openings in the side wall and parAllel adjacently along said room wall.
Claim 2
Dependent Claim
130 words
A shield mounted about an airflow outlet in a room wall for reducing the accumulation of air carried dirt upon said room wall adjacent said outlet, said shield comprising a side wall surrounding said outlet and extending substantially perpendicularly outwardly from said room wall, said shield including a deflector plate means carried at the inside of said side wall spaced from said room wall, said side wall having a plurality of openings formed therein, said deflector plate means extending around said outlet and projecting outwardly from the inside of said side wall and away from said room wall wherein a portion of the air from said outlet contacts said deflector plate means and is diverted laterally through said openings in the side wall and parAllel adjacently along said room wall.
Claim 3
Dependent Claim
16 words
The shield of claim 1 wherein said deflector plate means has a plurality of openings therein.
Claim 4
Dependent Claim
63 words
The shield of claim 2 and another of said deflector plate means carried at the inside of said side wall spaced from said room wall, said two deflector plate means being in a spaced relationship and serving to divert a portion of said air flowing from said outlet laterally through said openings in said side wall and parallel adjacently along said room wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |