US3087412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvered outside air intake
Assignee: American Air Filter Co Inc
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Filing: 1961-04-06
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Granted: 1963-04-30
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Expires: 1981-04-06
Abstract
No abstract record available.
Inventors
- 👤 Gifford I Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:20
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/082; F; F24; F24F; F24F13/00; F24F13/08; F24F13/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN AN AIR INTAKE OF THE TYPE HAVING SEPARATE, HORIZONTALLY EXTENDING CHEVRON-SHAPED LOUVER BLADES DISPOSED IN SUPERPOSED SPACED RELATION; SUB-LOUVER MEANS PROVIDED ALONG THE APEX OF EACH CHEVRON BLADE, SAID SUB-LOUVER MEANS INCLUDING A SLOT IN ONE LEG OF SAID CHEVRON AND EXTENDING ALONG SAID APEX, AND AN AIR DEFLECTING TAB PROJECTING FROM SAID APEX AND OVERLYING SAID SLOT TO FORM, WITH THE OTHER LEG OF SAID CHEVRON, AN INCLUDED ANGLE GREATER THAN THE INCLUDED ANGLE BETWEEN THE TWO LEGS OF SAID CHEVRON.
Claim 2
Dependent Claim
83 words
IN AN AIR INTAKE OF THE TYPE HAVING SEPARATE, HORIZONTALLY EXTENDING CHEVRON-SHAPED LOUVER BLADES DISPOSED IN SUPERPOSED SPACED RELATION; SUB-LOUVER MEANS PROVIDED ALONG THE APEX OF EACH CHEVRON BLADE, SAID SUB-LOUVER MEANS INCLUDING A SLOT IN ONE LEG OF SAID CHEVRON AND EXTENDING ALONG SAID APEX, AND AN AIR DEFLECTING TAB PROJECTING FROM SAID APEX AND OVERLYING SAID SLOT TO FORM, WITH THE OTHER LEG OF SAID CHEVRON, AN INCLUDED ANGLE GREATER THAN THE INCLUDED ANGLE BETWEEN THE TWO LEGS OF SAID CHEVRON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |