US3211080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft control unit
Assignee: Individual
•
Filing: 1963-12-20
•
Granted: 1965-10-12
•
Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Elmer P Rader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A DRAFT CONTROL UNIT WITH A FLUID COMPRISING, A DEFLECTION CONE HAVING A NECK, A BASE AND BASE COVER HAVING AN AIR PASSAGE THERETHROUGH, A PLATE SECURED TO SAID DEFLECTION SAID CONE, A MOTOR SECURED TO SAID PLATE, SAID DEFLECTION CONE HAVING AT LEAST ONE PERFORATION IN ITS NECK, A BEARING SHAFT SUPPORT AND BEARING CARRIED BY SAID MOTOR, A MOTOR SHAFT EXTENDING FROM SAID MOTOR THROUGH SAID BEARING SHAFT SUPPORT AND BEARING AND THROGH THE NECK OF SAID DEFLECTION CONE, A SUCTION FAN BLADE SECURED TO SAID MOTOR SHAFT EXTERIORLY OF THE DEFLECTION CONE, BRACKETS FOR ATTACHMENT OF SAID DEFLECTION CONE TO THE FLUE WHEREBY SAID SUCTION FAN BLADE IS SITUATED WITHIN THE FLUE, MEANS FOR ACTUATING SAID MOTOR, AND BLOWER MEANS FOR INTRODUCING AIR INTO SAID CONE THROUGH THE AIR PASSAGE IN THE BASE COVER TO COOL SAID MOTOR AND FOR EXHAUSTING SAID AIR TO THE ATMOSPHERE THROUGH SAID PERFORATION.
Claim 2
Dependent Claim
152 words
A DRAFT CONTROL UNIT WITH A FLUID COMPRISING, A DEFLECTION CONE HAVING A NECK, A BASE AND BASE COVER HAVING AN AIR PASSAGE THERETHROUGH, A PLATE SECURED TO SAID DEFLECTION SAID CONE, A MOTOR SECURED TO SAID PLATE, SAID DEFLECTION CONE HAVING AT LEAST ONE PERFORATION IN ITS NECK, A BEARING SHAFT SUPPORT AND BEARING CARRIED BY SAID MOTOR, A MOTOR SHAFT EXTENDING FROM SAID MOTOR THROUGH SAID BEARING SHAFT SUPPORT AND BEARING AND THROGH THE NECK OF SAID DEFLECTION CONE, A SUCTION FAN BLADE SECURED TO SAID MOTOR SHAFT EXTERIORLY OF THE DEFLECTION CONE, BRACKETS FOR ATTACHMENT OF SAID DEFLECTION CONE TO THE FLUE WHEREBY SAID SUCTION FAN BLADE IS SITUATED WITHIN THE FLUE, MEANS FOR ACTUATING SAID MOTOR, AND BLOWER MEANS FOR INTRODUCING AIR INTO SAID CONE THROUGH THE AIR PASSAGE IN THE BASE COVER TO COOL SAID MOTOR AND FOR EXHAUSTING SAID AIR TO THE ATMOSPHERE THROUGH SAID PERFORATION.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |