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US3832290A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of electroforming a rocket chamber

Assignee: National Aeronautics and Space Administration
•
Filing: 1972-09-14
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Granted: 1974-08-27
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Expires: 1992-09-14
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Abstract

Abstract A TRANSPIRATION COLLED ROCKET CHAMBER IS MADE BY FORMING A POROUS METAL WALL ON A SUITABLY SHAPED MANDREL. THE POROUS WALL MAY BE MADE OF SINTERED POWDERED METAL, METAL FIBERS SINTERED ON THE MANDREL OR WIRES WOVEN ONTO THE MANDREL AND THEN SINTERED TO BOND THE INTERFACES OF THE WIRES. INTERSECTING ANNULAR AND LONGITUDINAL RIBS ARE THEN ELECTROFORMED ON THE POROUS WALL. AN INTERCHAMBER WALL HAVING ORIFICES THEREIN IS THEN ELECTROFORMED OVER THE ANNULAR AND LONGITUDINAL RIBS. PARALLEL LONGITUDINAL RIB ARE THEN FORMED ON THE OUTSIDE SURFACE OF THE INTERCHAMBER WALL AFTER WHICH AN ANNULAR JACKET IS ELECTROFORMED OVER THE PARALLEL RIBS TO FORM DISTRIBUTION PASSAGES THEREWITH. A FEED MANIFOLD COMMUNICATING WITH THE DISTRIBUTION PASSAGES MAY BE FABRICATED AND WELDED TO THE ROCKET CHAMBER OR THE FEED MANIFOLD MAY BE ELECTROFORMED IN PLACE.

Inventors

  • 👤 A Fortini

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 22:42
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1977-08-26 1978-02-25 1978-08-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-26 1982-02-25 1982-08-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-26 1986-02-25 1986-08-27 $7700.00 Window Closed / Lapsed

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