US3674227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fragmenting cover
Assignee: Raytheon Co
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Filing: 1970-03-23
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Granted: 1972-07-04
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Expires: 1990-03-23
Abstract
Abstract A protective cover for a window is made of fragmentable material, and is equipped with a fragmenting actuator so when it is desired to remove the cover, the fragmenting actuator fragments the cover. In the preferred embodiment, the cover is a dome over a window for a radiation detector, for example, in the nose of a missile.
Inventors
- 👤 Stanley I Jacobson
- 👤 John R Sansbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:20
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/32; F42B10/38; F42B10/42; F42B10/46
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
95 words
The combination of a missile having a nose and a radiation transparent detector window in the missile nose, with a fragmentable protective cover over the detector window; said protective cover being made of fragmentable material; attachment means for attaching and retaining the protective cover on the missile nose over the detector window in the missile nose; fragmenting means responsive to a fragmenting signal and positioned with respect to the fragmentable cover so that upon receipt of a fragmenting signal, said fragmenting means fragments said protective cover to expose the detector window in the missile nose.
Claim 2
Dependent Claim
95 words
The combination of a missile having a nose and a radiation transparent detector window in the missile nose, with a fragmentable protective cover over the detector window; said protective cover being made of fragmentable material; attachment means for attaching and retaining the protective cover on the missile nose over the detector window in the missile nose; fragmenting means responsive to a fragmenting signal and positioned with respect to the fragmentable cover so that upon receipt of a fragmenting signal, said fragmenting means fragments said protective cover to expose the detector window in the missile nose.
Claim 3
Dependent Claim
27 words
The combination of claim 1 wherein said fragmentable cover has internal balanced stresses, which stresses are unbalanced by said fragmenting means to cause fragmentation of said cover.
Claim 4
Dependent Claim
14 words
The combination of claim 2 wherein said fragmentable cover is made of glass-like material.
Claim 5
Dependent Claim
44 words
The combination of claim 3 wherein said fragmentable cover has compressive stresses near its external surfaces and tensile stresses interiorly of its surfaces so that notching of the fragmentable cover by said fragmenting means causes restabilization of stresses which causes fragmentation of the cover.
Claim 6
Dependent Claim
15 words
The combination of claim 4 wherein said fragmentable cover is made of chemically strengthened glass.
Claim 7
Dependent Claim
37 words
The combination of claim 1 wherein said attachment means comprises at least three attachment clips secured to the missile nose and engaging over said protective cover to retain the protective cover with respect to said missile nose.
Claim 8
Dependent Claim
34 words
The combination of claim 6 wherein said missile nose has a seal ring therearound posteriorly to the detector window and said protective cover engages over said detector window anD engages on said seal ring.
Claim 9
Dependent Claim
15 words
The combination of claim 7 wherein said protective cover is spaced from said detector window.
Claim 10
Dependent Claim
27 words
The combination of claim 8 wherein said fragmentable cover has internal balanced stresses, which stresses are unbalanced by said fragmenting means to cause fragmentation of said cover.
Claim 11
Dependent Claim
14 words
The combination of claim 9 wherein said fragmentable cover is made of glass-like material.
Claim 12
Dependent Claim
45 words
The combination of claim 10 wherein said fragmentable cover has compressive stresses near its external surfaces and tensile stresses interiorly of its surfaces so that notching of the fragmentable cover by said fragmenting means causes re tabilization of stresses which causes fragmentation of the cover.
Claim 13
Dependent Claim
15 words
The combination of claim 11 wherein said fragmentable cover is made of chemically strengthened glass.
Claim 14
Dependent Claim
45 words
The combination of claim 1 wherein said fragmenting means comprises a sharp device movably mounted with respect to said missile nose and movable into engagement with the edge of said protective cover so that said sharp device notches said protective cover to cause its fragmentation.
Claim 15
Dependent Claim
28 words
The combination of claim 13 wherein said sharp device is a point on a piston, said piston being substantially axially movable toward the edge of said protective cover.
Claim 16
Dependent Claim
42 words
The combination of claim 14 wherein said fragmenting means has a pyrotechnic actuator attached to the missile nose and positioned to drive said pointed piston toward said protective cover so that upon actuation of said pyrotechnic actuator, said fragmenting cover is fragmented.
Claim 17
Dependent Claim
27 words
The combination of claim 15 wherein said detector window is substantially spherical and said protective cover is substantially semispherical and substantially uniformly spaced from said detector window.
Claim 18
Dependent Claim
27 words
The combination of claim 16 wherein said fragmentable cover has internal balanced stresses, which stresses are unbalanced by said fragmenting means to cause fragmentation of said cover.
Claim 19
Dependent Claim
14 words
The combination of claim 17 wherein said fragmentable cover is made of glass-like material.
Claim 20
Dependent Claim
44 words
The combination of claim 18 wherein said fragmentable cover has compressive stresses near its external surfaces and tensile stresses interiorly of its surfaces so that notching of the fragmentable cover by such fragmenting means causes restabilization of stresses which causes fragmentation of the cover.
Claim 21
Dependent Claim
15 words
The combination of claim 19 wherein said fragmentable cover is made of chemically strengthened glass.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |