US3131912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Investment mixer
Assignee: Individual
•
Filing: 1954-02-01
•
Granted: 1964-05-05
•
Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Edmund A Steinbock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/88; B01F31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A DEVICE OF THE CLASS DESCRIBED THE COMBINATION OF A MOTOR HAVING A SHAFT, A VACUUM PUMP SECURED TO THE MOTOR AND CONNECTED TO THE SHAFT AT ONE END OF THE MOTOR TO BE OPERATED THEREBY, A COUPLEABLE DRIVING MEMBER OF A SEPARABLE FRICTION DRIVE DEVICE SECURED TO THE OTHER END OF THE MOTOR SHAFT, AN INVESTMENT MIXER INCLUDING A DRIVEN MIXING ELEMENT, A COUPLEABLE DRIVEN MEMBER OF THE SEPARABLE FRICTION DRIVE DEVICE CARRIED BY THE INVESTMENT MIXER DRIVEN MIXING ELEMENT FOR FRICTIONAL ENGAGEMENT WITH THE DRIVING MEMBER OF THE SEPARABLE FRICTION DRIVE DEVICE, AND MEANS CONNECTING THE VACUUM PUMP AND INVESTMENT MIXER PROVIDING A SUCTION PASSAGE TO ESTABLISH AND MAINTAIN A VACUUM IN THE MIXER.
Claim 2
Independent Claim
116 words
A DEVICE OF THE CLASS DESCRIBED THE COMBINATION OF A MOTOR HAVING A SHAFT, A VACUUM PUMP SECURED TO THE MOTOR AND CONNECTED TO THE SHAFT AT ONE END OF THE MOTOR TO BE OPERATED THEREBY, A COUPLEABLE DRIVING MEMBER OF A SEPARABLE FRICTION DRIVE DEVICE SECURED TO THE OTHER END OF THE MOTOR SHAFT, AN INVESTMENT MIXER INCLUDING A DRIVEN MIXING ELEMENT, A COUPLEABLE DRIVEN MEMBER OF THE SEPARABLE FRICTION DRIVE DEVICE CARRIED BY THE INVESTMENT MIXER DRIVEN MIXING ELEMENT FOR FRICTIONAL ENGAGEMENT WITH THE DRIVING MEMBER OF THE SEPARABLE FRICTION DRIVE DEVICE, AND MEANS CONNECTING THE VACUUM PUMP AND INVESTMENT MIXER PROVIDING A SUCTION PASSAGE TO ESTABLISH AND MAINTAIN A VACUUM IN THE MIXER.
References Cited (Backward Citations)
US244091A
Cited
US1784307A
Cited
US1863977A
Cited
US2036713A
Cited
US2453914A
Cited
US2637986A
Cited
US2605086A
Cited
US2562805A
Cited
US2556263A
Cited
US2690246A
Cited
US2777177A
Cited
US2666307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |