Patent US3871604A successfully refreshed from Google Patents.
US3871604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable jettisoning ejector for aircrafts
Assignee: Individual
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Filing: 1973-10-26
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Granted: 1975-03-18
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Expires: 1993-10-26
Abstract
Abstract This retractable ejector device for jettisoning loads from an aircraft comprises a non-return valve for storing gas under the maximum pressure until the telescopic piston has completed its operative stroke, the gas being then released from a reserve chamber to retract the piston.
Inventors
- 👤 Pierre Fernand Coutin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:42
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/02; B64D1/04; B64D1/06; F; F42; F42B; F42B3/00; F42B3/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
355 words
A retractable ejector device for jettisoning a load from an aircraft comprising a cylinder having an inlet port at one end and a restricted open end, a two section telescopic piston positioned in and spaced from said cylinder, each section of said piston having a hollow interior open at both ends of said piston, a first section of said piston having a head at its inner end portion, slideable in said cylinder and of a greater diameter than said cylinder restricted open end, a restriction in the hollow interior of said first section, at least one port through the inner end portion of said first section, a second section of said piston having a head at its inner end portion, slideable in said first section and of a greater diameter tham said restricted interior of said first section, a restriction in the hollow interior of said second section and at least one port through the inner end portion of said second section, a tubular distributor positioned in and spaced from said second section hollow interior, having a head at its inner end slideable in said second section, an exterior recess in said tubular distributor head, a flange at its other end portion of greater diameter than said second section restriction, a chamber at the lower portion of said tubular distributor, means closing said chamber at its outer end, a valve seat formed at the upper end of this chamber, a ball in said chamber maintained in the vicinity of said valve seat by said closing means, ports in said chamber disposed under said flange and connecting said chamber to the hollow interior of said second section in a retracted position of said distrubutor while said ports connect said chamber to the atmosphere in an extended position of said distributor, said ball being removed from said valve seat when gas pressure in said tubular distributor is higher than the gas pressure in said hollow second section, and said ball being forced against said valve seat as soon as the gas pressure in said hollow second section becomes higher than the gas pressure in said hollow distributor.
Claim 2
Dependent Claim
355 words
A retractable ejector device for jettisoning a load from an aircraft comprising a cylinder having an inlet port at one end and a restricted open end, a two section telescopic piston positioned in and spaced from said cylinder, each section of said piston having a hollow interior open at both ends of said piston, a first section of said piston having a head at its inner end portion, slideable in said cylinder and of a greater diameter than said cylinder restricted open end, a restriction in the hollow interior of said first section, at least one port through the inner end portion of said first section, a second section of said piston having a head at its inner end portion, slideable in said first section and of a greater diameter tham said restricted interior of said first section, a restriction in the hollow interior of said second section and at least one port through the inner end portion of said second section, a tubular distributor positioned in and spaced from said second section hollow interior, having a head at its inner end slideable in said second section, an exterior recess in said tubular distributor head, a flange at its other end portion of greater diameter than said second section restriction, a chamber at the lower portion of said tubular distributor, means closing said chamber at its outer end, a valve seat formed at the upper end of this chamber, a ball in said chamber maintained in the vicinity of said valve seat by said closing means, ports in said chamber disposed under said flange and connecting said chamber to the hollow interior of said second section in a retracted position of said distrubutor while said ports connect said chamber to the atmosphere in an extended position of said distributor, said ball being removed from said valve seat when gas pressure in said tubular distributor is higher than the gas pressure in said hollow second section, and said ball being forced against said valve seat as soon as the gas pressure in said hollow second section becomes higher than the gas pressure in said hollow distributor.
References Cited (Backward Citations)
US2233521A
Cited
US2730401A
Cited
US2746425A
Cited
US2931341A
Cited
US3056623A
Cited
US3229589A
Cited
US3557550A
Cited
US3756545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |