US3210228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making a filament wound pressure vessel
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-07-06
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Granted: 1965-10-05
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Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Bluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:37
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/602; F; F17; F17C; F17C1/00; F17C1/16; B29L; B29L2031/00; B29L2031/712; B29L2031/7154; B29L2031/7156; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2203/0658; F17C2203/0663; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2209/2163
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A METHOD OF PROVIDING A REFERENCE CONTOUR FOR FILAMENT WINDING OF PRESSURE VESSELS WHICH INCLUDES THE STEPS OF FORMING AN ELASTOMERIC FILM IN THE SHAPE OF A BLADDER SHAPED TO THE DESIRED INTERNAL CONFIGURATION OF THE PRESSURE VESSEL, RIGIDIZING THE BLADDER SUFFICIENTLY TO BE RIGID AT THE DESIRED CONFIGURATION OF LOW INTENAL PRESSURE IN THE ORDER OF ABOUT 25 TO 50 P.S.I., WINDING FILAMENTOUS MATERIAL ON THE RIGIDIZED BLADDER UNDER TENSION, AND CONCURRENTLY WITH THE WINDING STEP INCREASING THE INTERNAL PRESSURE IN THE BLADDER IN SUFFICIENT AMOUNT TO COMPENSATE FOR THE INCREASING APPLIED EXTERNAL PRESSURE DURING WINDING DUE TO THE TENSION OF THE APPLIED FILAMENTOUS MATERIAL.
Claim 2
Independent Claim
106 words
A METHOD OF PROVIDING A REFERENCE CONTOUR FOR FILAMENT WINDING OF PRESSURE VESSELS WHICH INCLUDES THE STEPS OF FORMING AN ELASTOMERIC FILM IN THE SHAPE OF A BLADDER SHAPED TO THE DESIRED INTERNAL CONFIGURATION OF THE PRESSURE VESSEL, RIGIDIZING THE BLADDER SUFFICIENTLY TO BE RIGID AT THE DESIRED CONFIGURATION OF LOW INTENAL PRESSURE IN THE ORDER OF ABOUT 25 TO 50 P.S.I., WINDING FILAMENTOUS MATERIAL ON THE RIGIDIZED BLADDER UNDER TENSION, AND CONCURRENTLY WITH THE WINDING STEP INCREASING THE INTERNAL PRESSURE IN THE BLADDER IN SUFFICIENT AMOUNT TO COMPENSATE FOR THE INCREASING APPLIED EXTERNAL PRESSURE DURING WINDING DUE TO THE TENSION OF THE APPLIED FILAMENTOUS MATERIAL.
Claim 3
Dependent Claim
93 words
A FILAMENT WINDING MANDREL COMPRISING AN ELASTOMERIC FILM SHAPED TO FORM A BLADDER HAVING A REFERENCE CONTOUR ON ITS PERIPHERAL SURFACE, A RIGIDIZING THIN RESIN LAMINATE OF GLASS CLOTH MATED TO THE PERIPHERAL SURFACE OF SAID BLADDER, AND FITTINGS COMPRISING A HUB AND A NECK BONDED TO SAID BLADDER FOR SUPPORTING SAID BLADDER IN A WINDING MACHINE, SAID FITTINGS BEING DISPOSED ON THE AXIS OF ROTATION OF SAID BLADDER AND FORMING AXIAL AIR PASSAGE MEANS THROUGH WHICH A PRESSURIZING FLUID MAY BE INTRODUCED INTO THE INTERIOR OF THE BLADDER DURING A WINDING OPERATION.
Claim 4
Dependent Claim
93 words
A FILAMENT WINDING MANDREL COMPRISING AN ELASTOMERIC FILM SHAPED TO FORM A BLADDER HAVING A REFERENCE CONTOUR ON ITS PERIPHERAL SURFACE, A RIGIDIZING THIN RESIN LAMINATE OF GLASS CLOTH MATED TO THE PERIPHERAL SURFACE OF SAID BLADDER, AND FITTINGS COMPRISING A HUB AND A NECK BONDED TO SAID BLADDER FOR SUPPORTING SAID BLADDER IN A WINDING MACHINE, SAID FITTINGS BEING DISPOSED ON THE AXIS OF ROTATION OF SAID BLADDER AND FORMING AXIAL AIR PASSAGE MEANS THROUGH WHICH A PRESSURIZING FLUID MAY BE INTRODUCED INTO THE INTERIOR OF THE BLADDER DURING A WINDING OPERATION.
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |