Rocket fuse with delayed-action arming |
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| 申请号 | US3633511D | 申请日 | 1969-11-12 | 公开(公告)号 | US3633511A | 公开(公告)日 | 1972-01-11 |
| 申请人 | LACROIX E; | 发明人 | MAURY LOUIS; | ||||
| 摘要 | A rocket fuse with delayed-action arming comprises a fixed cylinder containing microballs and a spring-loaded plunger in the cylinder tends to force the balls out through a calibrated orifice. In the stored position the orifice is closed by a closing ring which can slide on the cylinder with a helical movement to open the orifice at the end of such movement. The movement takes place due to inertia when the rocket is launched and the ensuing movement of the plunger is used to arm the detonator. | ||||||
| 权利要求 | 1. A rocket fuse with delayed arming action, comprising: a. a body, B. a slide movable within said body between a storage position and an armed position, c. a detonator carried by said slide, said detonator being operable only when said slide is in its armed position, d. means urging said slide to its armed position; e. an abutment preventing movement of said slide from its storage position to its armed position, and f. a delayed-action arming device for retracting said abutment to permit movement of said slide to its armed position, said delayed-action arming device including: I. a chamber defined by a fixed cylIndrical wall having at least one orifice therein, II. a plunger within said chamber supporting said abutment, III. microballs within said chamber supporting said plunger, IV. resilient means urging said plunger in a direction for retracting said abutment and for pushing said balls out of said chamber through said orifice, V. a closing ring coaxial with and surrounding said cylindrical wall, said ring having at least one orifice and an exterior flange, VI. guide means for causing said closing ring to move helically with respect to said cylindrical wall between a storage position in which said closing ring closes said orifice in said wall and an armed position in which said orifices in said wall and ring are aligned so that said microballs can flow through said orifices out of said chamber, VII. an arming ring coaxial with and surrounding said closing ring, said arming ring being axially slidable with respect to said closing ring and having an interior flange, and VIII. resilient means urging said arming ring in a direction in which its interior flange engages said exterior flange of said closing ring and maintains the latter in its storage position, the initial movement of the rocket when fired causing said arming ring to move axially to compress said resilient means VIII and release the engagement between said flanges whereupon toe rotational movement of the rocket causes said closing ring to move helically to its armed position so that said microballs escape from said chamber and permit said resilient means IV to retract said abutment and allow said detonatorcarrying slide to move to its armed position. 2. A rocket fuse as defined in claim 1 including means for preventing rotation of said arming ring, a bore in the flange of said closing ring, and a locking stud carried by the flange of said arming ring and being accommodated by said bore to prevent helical movement of said closing ring. 3. A rocket fuse as defined in claim 1 wherein said closing ring flange has a mass sufficient to serve as an inertia flywheel. 4. A rocket fuse as defined in claim 1 including a male helical member carried by said cylindrical wall, and a female helical means formed in said closing ring and cooperating with said helical member to produce helical movement of said closing ring. 5. A rocket fuse as defined in claim 1 wherein the face of said closing ring flange which faces said arming ring flange is formed with an inclined path which begins at said bore, said stud engaging said inclined path under the influence of resilient means VIII and returning said closing ring to its storage position after a partial movement of the latter toward its armed position. |
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