US3132562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Launching system for rocket driven devices
Assignee: Dow Chemical Co
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Filing: 1961-05-16
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Granted: 1964-05-12
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 Ludo K Frevel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
AN UNDERGROUND APPARATUS FOR LAUNCHING ROCKET DRIVEN VEHICLES INCLUDING SAID VEHICLE WHICH COMPRISES; A MULTISTAGE, RIGID, SMOOTH-BORE, EVACUABLE ACCELERATOR TUBE, SAID TUBE BEING POSITIONED VERTICALLY UNDERGROUND WITH ITS UPPER END AT ABOUT GROUND SURFACE LEVEL AND HAVING A FLANGE AT ITS TOP, SAID ACCELERATOR TUBE HAVING A GAS VENT SYSTEM NEAR THE BOTTOM FOR REMOVAL AND PURGING OF EXCESS GASES FROM SAID TUBE SUBSEQUENT TO A LAUNCHING OF SAID VEHICLE. A VACUUM LOCK ATTACHED TO THE BOTTOM OF SAID ACCELERATOR TUBE FOR HOLDING A ROCKET DRIVEN VEHICLE TO BE LAUNCHED WHEREBY SAID VEHICLE IS INTRODUCED INTO SAID ACCELERATOR TUBE, A MULTIPLICITY OF GAS STORAGE VESSELS SURROUNDING SAID ACCELERATOR TUBE, EACH OF SAID GAS STORAGE VESSELS BEING SUBSTANTIALLY THE SAME LENGTH AS SAID ACCELERATOR TUBE, EACH OF SAID GAS STORAGE VESSELS DIVIDED INTERNALLY INTO SECTIONS CORRESPONDING IN LENGTH TO THE STAGES OF SAID ACCELERATOR TUBE, EACH OF SAID GAS STORAGE VESSELS CONTAINING A COMPRESSED, LOW MOLECULAR WEIGHT GAS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HELIUM AND MIXTURES THEREOF AND EACH OF SAID SECTIONS OF SAID GAS STORAGE VESSELS FITTED WITH A TUNGSTEN ARC HEAT PRODUCING DEVICE IN ITS UPPER PORTION,
Claim 2
Dependent Claim
190 words
AN UNDERGROUND APPARATUS FOR LAUNCHING ROCKET DRIVEN VEHICLES INCLUDING SAID VEHICLE WHICH COMPRISES; A MULTISTAGE, RIGID, SMOOTH-BORE, EVACUABLE ACCELERATOR TUBE, SAID TUBE BEING POSITIONED VERTICALLY UNDERGROUND WITH ITS UPPER END AT ABOUT GROUND SURFACE LEVEL AND HAVING A FLANGE AT ITS TOP, SAID ACCELERATOR TUBE HAVING A GAS VENT SYSTEM NEAR THE BOTTOM FOR REMOVAL AND PURGING OF EXCESS GASES FROM SAID TUBE SUBSEQUENT TO A LAUNCHING OF SAID VEHICLE. A VACUUM LOCK ATTACHED TO THE BOTTOM OF SAID ACCELERATOR TUBE FOR HOLDING A ROCKET DRIVEN VEHICLE TO BE LAUNCHED WHEREBY SAID VEHICLE IS INTRODUCED INTO SAID ACCELERATOR TUBE, A MULTIPLICITY OF GAS STORAGE VESSELS SURROUNDING SAID ACCELERATOR TUBE, EACH OF SAID GAS STORAGE VESSELS BEING SUBSTANTIALLY THE SAME LENGTH AS SAID ACCELERATOR TUBE, EACH OF SAID GAS STORAGE VESSELS DIVIDED INTERNALLY INTO SECTIONS CORRESPONDING IN LENGTH TO THE STAGES OF SAID ACCELERATOR TUBE, EACH OF SAID GAS STORAGE VESSELS CONTAINING A COMPRESSED, LOW MOLECULAR WEIGHT GAS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HELIUM AND MIXTURES THEREOF AND EACH OF SAID SECTIONS OF SAID GAS STORAGE VESSELS FITTED WITH A TUNGSTEN ARC HEAT PRODUCING DEVICE IN ITS UPPER PORTION,
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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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |