US3561679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible nozzle for aircraft rocket motors
Assignee: Individual
•
Filing: 1968-06-25
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Granted: 1971-02-09
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Expires: 1988-06-25
Abstract
Abstract A nozzle for rocket motors formed of collapsible telescoping tubes which are extended upon launch to a predetermined nozzle length whereby the advantage of reduced space during shipping and stowage may be combined with the advantage of extended nozzle length during operation.
Inventors
- 👤 Sam E Lager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:09
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/976
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
A nozzle for a rocket motor said nozzle comprising: a plurality of interconnected and telescoping concentric tubes operably attached to the afterend of the rocket motor and having both collapsed and extended positions in respect to the rocket motor; each tube being slit at the periphery thereof to permit interlocking movement when fully extended; and means for extending the tubes from a collapsed position to an extended position when the rocket motor is launched including a frangible detent positioned in the periphery of the outermost tube and severably connected to a suitable mooring device, said detent being in the shape of a yoke having a pair of opposed arms extending part way about the outer concentric tube with each arm being connected to said concentric tube by a frangible pin.
Claim 2
Dependent Claim
130 words
A nozzle for a rocket motor said nozzle comprising: a plurality of interconnected and telescoping concentric tubes operably attached to the afterend of the rocket motor and having both collapsed and extended positions in respect to the rocket motor; each tube being slit at the periphery thereof to permit interlocking movement when fully extended; and means for extending the tubes from a collapsed position to an extended position when the rocket motor is launched including a frangible detent positioned in the periphery of the outermost tube and severably connected to a suitable mooring device, said detent being in the shape of a yoke having a pair of opposed arms extending part way about the outer concentric tube with each arm being connected to said concentric tube by a frangible pin.
Claim 3
Dependent Claim
45 words
The nozzle of claim 1 wherein the concentric tubes in the extended position gradually increase in diameter from the afterend of the rocket motor to the afterend of the tubes thus varying the nozzle length and width and providing increased thrust to the rocket motor.
Claim 4
Dependent Claim
30 words
The nozzle of claim 2 wherein the concentric tubes in the extended position are adapted to lock in sealing fluidtight engagement by suitable locking members inherently located on each tube.
Claim 5
Dependent Claim
38 words
The nozzle of claim 3 wherein the locking members include an outwardly directed lip an an inwardly directed shoulder of adjacent concentric tubes which are adapted to lock in sealing engagement at the extended position of said tubes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |