Patent US3148845A successfully refreshed from Google Patents.
US3148845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tube system for high carrier speeds
Assignee: International Standard Electric Corp
•
Filing: 1962-05-17
•
Granted: 1964-09-15
•
Expires: 1982-05-17
Abstract
No abstract record available.
Inventors
- 👤 Buchwald Fritz
- 👤 Kudritzki Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:43
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/12; B61B13/122
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
161 words
A PNEUMATIC TUBE SYSTEM FOR HIGH SPEED CARRIERS COMPRISING A FORWARDING TUBE FOR CONVEYING A CARRIER, A FIRST SLIDE PLATE DISPOSED AT THE ENTRANCE TO SAID TUBE, A SECOND SLIDE PLATE DISPOSED AT THE EXIT OF SAID TUBE, A BLOWER PRODUCING COMPRESSION ON ONE OF ITS SIDES AND PRODUCING VACUUM ON ITS OTHER SIDE, A FIRST CONNECTION LOCATED IN SAID TUBE NEAR SAID ENTRANCE SLIDE PLATE, A FIRST VALVE CONNECTED BETWEEN SAID FIRST CONNECTION AND THE VACUUM SIDE OF SAID BLOWER TO APPLY SUCTION TO SAID TUBE, A SECOND VALVE CONNECTED BETWEEN THE COMPRESSION SIDE OF SAID BLOWER AND THE ATMOSPHERE, SAID FIRST AND SECOND VALVES NORMALLY BEING OPEN BEFORE A CARRIER HAS ENTERED SAID TUBE, A THIRD VALVE CONNECTED BETWEEN SAID FIRST CONNECTION AND THE COMPRESSION SIDE OF SAID BLOWER, A FOURTH VALVE CONNECTED BETWEEN SAID VACUUM SIDE OF SAID BLOWER AND THE ATMOSPHERE, SAID THIRD AND FOURTH VALVES NORMALLY BEING CLOSED BEFORE A CARRIER HAS ENTERED SAID TUBE, A
References Cited (Backward Citations)
US623509A
Cited
US1943451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |