US3237850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow fan with boundary layer control
Assignee: Borg Warner Corp
•
Filing: 1964-08-24
•
Granted: 1966-03-01
•
Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Theodor H Troller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:46
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/68; F04D29/681; F04D29/682; F04D29/684; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN AXIAL FLOW FAN ASSEMBLY COMPRISING AN AXIAL FLOW IMPELLER; A PLURALITY OF STATOR VANES DOWNSTREAM FROM SAID IMPELLER, EACH SAID STATOR VANES HAVING A HOLLOW CONSTRUCTION AND BEING DIVIDED INTO FIRST AND SECOND COMPARTMENTS; MEANS DEFINING A SUCTION SLOT IN SAID FIRST COMPARTMENT; MEANS DEFINING A BLOWING SLOT IN SAID SECOND COMPARTMENT; FAN MEANS DRIVEN CONJOINTLY WITH SAID IMPELLER FOR SUPPLYING SUCTION AND PRESSURE TO SAID FIRST AND SECOND COMPARTMENT RESPECTIVELY.
Claim 2
Dependent Claim
72 words
AN AXIAL FLOW FAN ASSEMBLY COMPRISING AN AXIAL FLOW IMPELLER; A PLURALITY OF STATOR VANES DOWNSTREAM FROM SAID IMPELLER, EACH SAID STATOR VANES HAVING A HOLLOW CONSTRUCTION AND BEING DIVIDED INTO FIRST AND SECOND COMPARTMENTS; MEANS DEFINING A SUCTION SLOT IN SAID FIRST COMPARTMENT; MEANS DEFINING A BLOWING SLOT IN SAID SECOND COMPARTMENT; FAN MEANS DRIVEN CONJOINTLY WITH SAID IMPELLER FOR SUPPLYING SUCTION AND PRESSURE TO SAID FIRST AND SECOND COMPARTMENT RESPECTIVELY.
References Cited (Backward Citations)
US2156133A
Cited
GB477449A
Cited
US2294586A
Cited
US2405768A
Cited
US2344835A
Cited
US2597510A
Cited
US2637487A
Cited
US2618433A
Cited
US3009630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |