US3176618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket motor construction and fabrication process
Assignee: Hexcel Products Inc
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Filing: 1961-06-14
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Granted: 1965-04-06
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Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Richard P Forsberg
- 👤 John P Schafer
- 👤 Wells A Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; F02K9/14; F02K9/24; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
IN A ROCKET MOTOR FOR THE UTILIZATION OF HIGH SPECIFIC IMPLUSE PROPELLANTS HAVING AN IDEALIZED STOICHIOMETRIC RATIO OF PROPELLANT AND OXIDIZER, THE COMBINATION OF A ROCKET GRAIN HAVING A PLURALITY OF LAYERS OF RADIALLY ORIENTED HONEYCOMB, SAID HONEYCOMB FORMED OF CONSUMABLE MATERIAL AND FILLED WITH PRESELECTED FUEL COMPONENTS, EACH ONE OF SAID LAYERS FORMED BY WINDING STRIPS OF HONEYCONB HELICALLY ALONG A SUPPORTING SURFACE, A CONDUCTIVE FOIL HELICALLY WOUND INTERMEDIATE ADJACENT LAYERS OF HONEYCOMB IN EACH LAYER OF PROVIDE CONDUCTIVE PATHS BETWEEN ADJACENT LAYERS OF THE GRAIN AND AN ADHESIVE TO BOND THE HONEYCOMB STRIPS AND INTERLEAVING FOIL TOGETHER TO PROVIDE AN INTEGRAL GRAIN STRUCTURE.
Claim 2
Dependent Claim
105 words
IN A ROCKET MOTOR FOR THE UTILIZATION OF HIGH SPECIFIC IMPLUSE PROPELLANTS HAVING AN IDEALIZED STOICHIOMETRIC RATIO OF PROPELLANT AND OXIDIZER, THE COMBINATION OF A ROCKET GRAIN HAVING A PLURALITY OF LAYERS OF RADIALLY ORIENTED HONEYCOMB, SAID HONEYCOMB FORMED OF CONSUMABLE MATERIAL AND FILLED WITH PRESELECTED FUEL COMPONENTS, EACH ONE OF SAID LAYERS FORMED BY WINDING STRIPS OF HONEYCONB HELICALLY ALONG A SUPPORTING SURFACE, A CONDUCTIVE FOIL HELICALLY WOUND INTERMEDIATE ADJACENT LAYERS OF HONEYCOMB IN EACH LAYER OF PROVIDE CONDUCTIVE PATHS BETWEEN ADJACENT LAYERS OF THE GRAIN AND AN ADHESIVE TO BOND THE HONEYCOMB STRIPS AND INTERLEAVING FOIL TOGETHER TO PROVIDE AN INTEGRAL GRAIN STRUCTURE.
Claim 3
Dependent Claim
86 words
A REINFORCED ROCKET GRAIN COMPRISING A COHERENT AMORPHOUS PROPELLANT MASS OF FUEL AND OXIDANT; A STRUCTURAL HONEYCOMB FUEL COMPONENT REINFORCING SAID PROPELLANT MASS SUBSTANTIALLY THROUGHOUT ITS BODY; SAID HONEYCOMB COMPRISING AT LEAST ONE RELATIVELY NARROW RIBBON OF EXPANDED HONEYCOMB HELICALLY WOUND INTO CYLINDRICAL SHAPE EXTENDING SUBSTANTIALLY THE FULL LENGTH OF THE GRAIN; SAID PROPELLANT MASS FILLING ALL OF THE CELLS OF THE HONEYCOMB AND INTIMATELY ADHERED TO THE WALLS OF THE HONEYCOMB; PROPELLANT MASS INCLUDING SUFFICIENT OXIDANT TO SUPPORT COMBUSITION OF THE STRUCTURAL HONEYCOMB FUEL COMPONENT.
Claim 4
Dependent Claim
86 words
A REINFORCED ROCKET GRAIN COMPRISING A COHERENT AMORPHOUS PROPELLANT MASS OF FUEL AND OXIDANT; A STRUCTURAL HONEYCOMB FUEL COMPONENT REINFORCING SAID PROPELLANT MASS SUBSTANTIALLY THROUGHOUT ITS BODY; SAID HONEYCOMB COMPRISING AT LEAST ONE RELATIVELY NARROW RIBBON OF EXPANDED HONEYCOMB HELICALLY WOUND INTO CYLINDRICAL SHAPE EXTENDING SUBSTANTIALLY THE FULL LENGTH OF THE GRAIN; SAID PROPELLANT MASS FILLING ALL OF THE CELLS OF THE HONEYCOMB AND INTIMATELY ADHERED TO THE WALLS OF THE HONEYCOMB; PROPELLANT MASS INCLUDING SUFFICIENT OXIDANT TO SUPPORT COMBUSITION OF THE STRUCTURAL HONEYCOMB FUEL COMPONENT.
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |