US4007689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blocking mechanism for an impact fuze
Assignee: Rheinmetall Air Defence AG
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Filing: 1976-06-14
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Granted: 1977-02-15
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Expires: 1996-06-14
Abstract
Abstract A blocking mechanism for an impact fuze comprising a spring-loaded blocking sleeve lengthwise displaceable in the fuze housing and provided with at least one radially movable blocking body. The blocking body can be brought by means of a spring-loaded blocking bolt lengthwise displaceable within the blocking sleeve into a position blocking the blocking sleeve in the fuze housing. The fuze housing has a recess into which there can engage the blocking body for blocking the blocking sleeve in a first position. The fuze housing has a further substantially wedge-shaped recess which tapers towards the rear in which there can be wedged the blocking body between a wall of this recess and the blocking bolt, in a second position of the blocking sleeve, for the purpose of securing the blocking bolt against displacement towards the rear.
Inventors
- 👤 Robert Apotheloz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
A blocking mechanism for an impact fuze comprising a fuze housing, a blocking sleeve mounted to be lengthwise displaceable within the fuze housing, means for spring-loading the blocking sleeve, said blocking sleeve being provided with at least one radially movable blocking body, a blocking bolt lengthwise displaceable within the blocking sleeve for bringing the blocking body into a position blocking the blocking sleeve in the fuze housing, means for spring-loading the blocking bolt, said fuze housing having a recess into which there can engage the blocking body for blocking the blocking sleeve in a first position, said fuze housing having a further substantially wedge-shaped recess tapering towards the rear of the fuze housing, said further recess having a wall, the blocking body in a second position of the blocking sleeve being clampable between the wall of the further recess and the blocking bolt for securing the blocking bolt against rearward displacement.
Claim 2
Dependent Claim
151 words
A blocking mechanism for an impact fuze comprising a fuze housing, a blocking sleeve mounted to be lengthwise displaceable within the fuze housing, means for spring-loading the blocking sleeve, said blocking sleeve being provided with at least one radially movable blocking body, a blocking bolt lengthwise displaceable within the blocking sleeve for bringing the blocking body into a position blocking the blocking sleeve in the fuze housing, means for spring-loading the blocking bolt, said fuze housing having a recess into which there can engage the blocking body for blocking the blocking sleeve in a first position, said fuze housing having a further substantially wedge-shaped recess tapering towards the rear of the fuze housing, said further recess having a wall, the blocking body in a second position of the blocking sleeve being clampable between the wall of the further recess and the blocking bolt for securing the blocking bolt against rearward displacement.
Claim 3
Dependent Claim
46 words
The blocking mechanism as defined in claim 1, wherein said wall together with the lengthwise axis of the blocking bolt encloses an acute angle, the tangent of which is smaller than the coefficient of friction of dry static friction between the blocking body and the wall.
Claim 4
Dependent Claim
39 words
The blocking mechanism as defined in claim 1, wherein the further recess possesses the shape of a surface of revolution, the generatrix of which comprises approximately one-quarter of a circle and a rearwardly merging tangent located in said wall.
Claim 5
Dependent Claim
164 words
A blocking mechanism for an impact fuze comprising a fuze housing having a front end and a rear end, a blocking sleeve mounted to be lengthwise displaceable within the fuze housing, means for resiliently loading the blocking sleeve, said blocking sleeve being provided with at least one radially movable blocking body, a blocking bolt lengthwise displaceable within the blocking sleeve for bringing the blocking body into a position blocking the blocking sleeve in the fuze housing, means for resiliently loading the blocking bolt, said fuze housing having means defining a recess into which there can engage the blocking body for blocking the blocking sleeve in a first position, said fuze housing having means defining a further recess tapering towards the rear end of the fuze housing, said further recess including a wall, the blocking body in a second position of the blocking sleeve being held between the wall of the further recess and the blocking bolt for securing the blocking bolt against rearward displacement.
Claim 6
Dependent Claim
164 words
A blocking mechanism for an impact fuze comprising a fuze housing having a front end and a rear end, a blocking sleeve mounted to be lengthwise displaceable within the fuze housing, means for resiliently loading the blocking sleeve, said blocking sleeve being provided with at least one radially movable blocking body, a blocking bolt lengthwise displaceable within the blocking sleeve for bringing the blocking body into a position blocking the blocking sleeve in the fuze housing, means for resiliently loading the blocking bolt, said fuze housing having means defining a recess into which there can engage the blocking body for blocking the blocking sleeve in a first position, said fuze housing having means defining a further recess tapering towards the rear end of the fuze housing, said further recess including a wall, the blocking body in a second position of the blocking sleeve being held between the wall of the further recess and the blocking bolt for securing the blocking bolt against rearward displacement.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |