US3265292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw rotor machine
Assignee: Svenska Rotor Maskiner AB
•
Filing: 1966-01-03
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Granted: 1966-08-09
•
Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Schibbye Lauritz Benedictus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:16
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/0042; F04C29/0078; F01; F01C; F01C1/00; F01C1/08; F01C1/12; F01C1/14; F01C1/16; F02; F02B; F02B53/00; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/16; F04C27/00; F04C27/008; F04C27/009; F04C29/0007; F02B2730/00; F02B2730/05; F04C2230/00; F04C2230/70; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A SCREW ROTOR MACHINE FOR AN ELASTIC WORKING FLUID COMPRISING COAXIAL ROTORS JOURNALLED IN A HOUSING IN PARALLEL GROUPS AND PROVIDED WITH HELICAL LANDS AND INTERVENING GROOVES HAVING WRAP ANGLES OF LESS THAN 360*, ONE ROTOR IN A GROUP COOPERATING WITH A ROTOR IN ANOTHER GROUP WITHIN EACH SET OF AXIALLY EQUALLY LOCATED ROTORS OF THE DIFFERENT GROUPS AND ONE OF SAID COOPERATING ROTORS AT LEAST IN ONE SET BEING OF MALE ROTOR TYPE AND THE OTHER OF FEMALE ROTOR TYPE, THE HOUSING HAVING AT LEAST ONE WORKING SPACE PROVIDED WITH LOW PRESSURE AND HIGH PRESSURE PORTS AND BARREL AND END WALLS SEALING ENCLOSING ROTORS PROVIDED THEREIN, ONE ROTOR AT LEAST IN A FIRST COAXIAL ROTOR GROUP COMPRISING AT LEAST ONE AXIALLY PROJECTING STUD, AT LEAST ONE FURTHER ROTOR HAVING A CENTRAL BORE SURROUNDING AND CONNECTED WITH SAID STUD BY THE INTERFERENCE BETWEEN AT LEAST ONE PAIR OF ROTATIONALLY
Claim 2
Dependent Claim
149 words
A SCREW ROTOR MACHINE FOR AN ELASTIC WORKING FLUID COMPRISING COAXIAL ROTORS JOURNALLED IN A HOUSING IN PARALLEL GROUPS AND PROVIDED WITH HELICAL LANDS AND INTERVENING GROOVES HAVING WRAP ANGLES OF LESS THAN 360*, ONE ROTOR IN A GROUP COOPERATING WITH A ROTOR IN ANOTHER GROUP WITHIN EACH SET OF AXIALLY EQUALLY LOCATED ROTORS OF THE DIFFERENT GROUPS AND ONE OF SAID COOPERATING ROTORS AT LEAST IN ONE SET BEING OF MALE ROTOR TYPE AND THE OTHER OF FEMALE ROTOR TYPE, THE HOUSING HAVING AT LEAST ONE WORKING SPACE PROVIDED WITH LOW PRESSURE AND HIGH PRESSURE PORTS AND BARREL AND END WALLS SEALING ENCLOSING ROTORS PROVIDED THEREIN, ONE ROTOR AT LEAST IN A FIRST COAXIAL ROTOR GROUP COMPRISING AT LEAST ONE AXIALLY PROJECTING STUD, AT LEAST ONE FURTHER ROTOR HAVING A CENTRAL BORE SURROUNDING AND CONNECTED WITH SAID STUD BY THE INTERFERENCE BETWEEN AT LEAST ONE PAIR OF ROTATIONALLY
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |