US4188886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure probe for safety-arming device
Assignee: United States Department of the Navy
•
Filing: 1978-05-26
•
Granted: 1980-02-19
•
Expires: 1998-05-26
Abstract
Abstract An air pressure sensing probe for providing static-dynamic differential airressure to operate a guided missile warhead safety-arming device is disclosed. The probe assembly is hermetically sealed to keep the device free of dirt and moisture during storage. An electrically initiated squib, fired at a predetermined time after missile launch, supplies gas pressure to the base of the probe which acts as a piston. The probe breaks a tip seal, extends laterally out from the missile, and wedges into the erect position. The base of the probe contacts a sliding punch which severs seals from two air pressure conduits and aligns air passageways with static and dynamic pressure ports in the probe. Differential air pressure is thus fed to a safety-arming device which utilizes pneumatic operation.
Inventors
- 👤 Larry F. Brauer
- 👤 Jefferson O. Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:28
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/28; F42C15/31; F42C15/29
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
An erectable pressure probe for sensing static and dynamic pressure in a fluid, comprising: a housing having an opening; a probe having a tip and a base, said base being slidably retained within said housing, said tip being extensible through said opening, and said probe having conduit means for separately transmitting fluid static and dynamic pressure from said tip to said base; probe erection means attached to said housing and responsive to an external signal for extending said tip through said opening to define an extended tip; and fluid pressure distribution means positioned to cooperate with said base and extended tip for conducting static and dynamic fluid pressure from said tip through said conduit means to a remote operator.
Claim 2
Dependent Claim
119 words
An erectable pressure probe for sensing static and dynamic pressure in a fluid, comprising: a housing having an opening; a probe having a tip and a base, said base being slidably retained within said housing, said tip being extensible through said opening, and said probe having conduit means for separately transmitting fluid static and dynamic pressure from said tip to said base; probe erection means attached to said housing and responsive to an external signal for extending said tip through said opening to define an extended tip; and fluid pressure distribution means positioned to cooperate with said base and extended tip for conducting static and dynamic fluid pressure from said tip through said conduit means to a remote operator.
Claim 3
Dependent Claim
28 words
An erectable pressure probe as set forth in claim 1 wherein said opening is a sealable opening and said base is sealingly slidable between retracted and extended positions.
Claim 4
Dependent Claim
52 words
An erectable pressure probe as set forth in claim 2 wherein said base being in said extended position corresponds to said tip being extended through said sealable opening, and when said base is in said retracted position, said tip is retracted within said housing, and a frangible seal closes said sealable opening.
Claim 5
Dependent Claim
36 words
An erectable pressure probe as set forth in claim 2 wherein aforesaid probe erection means comprises a gas generating squib attached to aforesaid housing and positioned to pressurize said housing and said sealingly slidable probe base.
Claim 6
Dependent Claim
94 words
An erectable probe as set forth in claim 4 wherein said probe erection means further comprises: said gas generating squib being electrically initiatable; a source of electric energy; an arming wire; and an electric switch releasably retaining said arming wire and operative in response to release of said arming wire, said switch being electrically connected between said source of electric energy and said electrically initiatable gas generating squib; whereby release of said arming wire from said switch causes said switch to close and supply electric energy to said gas generating squib, initiating said squib.
Claim 7
Dependent Claim
77 words
An erectable pressure probe as set forth in claim 2 wherein aforesaid fluid pressure distribution means includes: static and dynamic pressure output ports each configured to receive and retain a sealed pressure conducting tube leading from said remote operator; and guillotine punch means cooperating with said base and slidably retained to aforesaid housing for severing a seal on said sealed pressure conducting tubes in response to said base moving from said retracted position to said extended position.
Claim 8
Dependent Claim
26 words
An erectable pressure probe as set forth in claim 6 wherein said guillotine punch means is releasably retained in an initial position by a shearable pin.
Claim 9
Dependent Claim
48 words
An erectable pressure probe as set forth in claim 2 wherein said probe base includes a tapered portion, and said housing includes a corresponding tapered aperture aligned with and adjacent to said sealable opening for receiving and retaining said tapered portion of said base in said extended position.
Claim 10
Dependent Claim
63 words
An erectable pressure probe as set forth in claim 8 wherein said probe has a dorsal keyway extending from a point adjacent said tip to a point adjacent said tapered base portion, and said housing has a pin extending from said housing adjacent said sealable opening and engaging said dorsal keyway for guiding said probe from said retracted position to said extended position.
Claim 11
Dependent Claim
25 words
An erectable pressure probe as set forth in claim 8 wherein said conduit means exits said probe through said tapered portion of said probe base.
References Cited (Backward Citations)
US1883583A
Cited
US2246510A
Cited
US3670656A
Cited
US3382805A
Cited
US3643508A
Cited
US3973501A
Cited
US3938443A
Cited
US3960086A
Cited
US3961577A
Cited
US3968751A
Cited
US3990370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |