US3173656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inward flow turbine
Assignee: Individual
•
Filing: 1963-12-09
•
Granted: 1965-03-16
•
Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Preez Pieter Johannes Jacob Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:58
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/02; F01; F01D; F01D17/00; F01D17/10; F01D17/105; F01D5/00; F01D5/02; F01D5/04; F01D5/043; F01D5/048; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN INWARD FLOW TURBINE, INCLUDING WALLS DEFINING AN IMPELLER CHAMBER; AN IMPELLER MOUNTED TO ROTATE WITHIN THE IMPELLER CHAMBER; AND AN ACCELERATING SYSTEM HAVING A FLOW INLET, FOR CONVERTING PRESSURE ENERGY IN A WORKING FLUID INTO KINETIC ENERGY AND FOR DIRECTING FLUID FLOW ONTO THE IMPELLER THROUGH A ZONE BETWEEN THE SYSTEM AND THE IMPELLER; AND WHICH INCLUDES FLOW BLEED-OFF MEANS FOR BLEEDING OFF WORKING FLUID FROM THE ZONE AT VARYING RATES OF FLOW, THE BLEED-OFF MEANS BEING ADAPTED TO MAINTAIN SENSIBLY CONSTANT THE RATE OF FLOW OF WORKING FLUID THROUGH THE ACCELERATING SYSTEM, THEREBY MAINTAINING
Claim 2
Dependent Claim
96 words
AN INWARD FLOW TURBINE, INCLUDING WALLS DEFINING AN IMPELLER CHAMBER; AN IMPELLER MOUNTED TO ROTATE WITHIN THE IMPELLER CHAMBER; AND AN ACCELERATING SYSTEM HAVING A FLOW INLET, FOR CONVERTING PRESSURE ENERGY IN A WORKING FLUID INTO KINETIC ENERGY AND FOR DIRECTING FLUID FLOW ONTO THE IMPELLER THROUGH A ZONE BETWEEN THE SYSTEM AND THE IMPELLER; AND WHICH INCLUDES FLOW BLEED-OFF MEANS FOR BLEEDING OFF WORKING FLUID FROM THE ZONE AT VARYING RATES OF FLOW, THE BLEED-OFF MEANS BEING ADAPTED TO MAINTAIN SENSIBLY CONSTANT THE RATE OF FLOW OF WORKING FLUID THROUGH THE ACCELERATING SYSTEM, THEREBY MAINTAINING
References Cited (Backward Citations)
US810955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |