Claims
- 1. In a safety mechanism for a fuse of a spinning-type projectile, said safety mechanism being of the type comprising a housing having a spherical cavity therein defined by a spherical surface, a spherical rotor rotatably disposed in said spherical cavity, said spherical rotor having a through-chamber therein carrying a detonator, said through-chamber defining a longitudinal axis and including first and second orifices at opposite longitudinal and second sides separated by a reference plane containing said longitudinal axis, said first and second orifices disposed on said spherical rotor periphery of said spherical rotor in substantially diametrically opposite relationship, said housing including a detonating passage leading to a detonable charge, said spherical rotor including a locking recess engaged by a releasable projection in said housing to lock said spherical rotor in a safety position wherein said first orifice is spaced from said detonating passage in the circumferential direction, said projection disposed diametrically opposite said detonating passage, a first empty cut-out formed in said spherical rotor periphery adjacent said first orifice to reduce the mass of said spherical rotor, the improvement wherein a second empty cut-out is provided in said spherical rotor periphery adjacent said second orifice to further reduce the mass of said spherical rotor, said first and second cut-outs being arranged and configured such that no portion thereof overlies said detonating passage when said spherical rotor is in said safety position, said first and second cut-outs lying on said first and second sides, respectively, said locking recess disposed between said first cut-out and said second orifice on said first side of said spherical rotor, and a passage-covering portion of said spherical rotor periphery being disposed diametrically opposite said locking recess, said passage-covering portion being positioned between said second cut-out and said first orifice on said second side of said spherical rotor, said passage-covering portion arranged to overlie said detonating passage in said safety position of said rotor, said spherical periphery of said spherical rotor including a first surface area positioned between said passage-covering portion and said first orifice and a second surface area positioned between said passage-covering portion and said second cut-out, said first and second surface areas making surface area contact with said spherical surface of said spherical cavity to block communication between said detonating passage and said first and second orifices when said spherical rotor is in said safety position, said first and second cut-outs being separated from said through-chamber by walls defined by portions of said rotor, each of said first and second cut-outs being formed by a pair of walls extending parallel to said reference plane and the other of said walls extending perpendicular to said reference plane, said other walls lying in a common plane containing a center of said spherical rotor.
- 2. A mechanism according to claim 1, wherein said walls are flat.
- 3. A mechanism according to claim 1, where in said first and second orifices are of equal volume.
- 4. A mechanism according to claim 1, wherein said first and second orifices are diametrically opposed.
- 5. In a safety mechanism for a fuse of a spinning-type projectile, said safety mechanism being of the type comprising a housing having a spherical cavity therein defined by a spherical surface, a spherical rotor rotatably disposed in said spherical cavity, said spherical rotor having a though-chamber therein carrying a detonator, said through-chamber defining a longitudinal axis and including first and second orifices at opposite longitudinal ends thereof, said spherical rotor periphery comprising first and second sides separated by a reference plane containing said longitudinal axis, said first and second orifices disposed on said spherical rotor periphery of said spherical rotor in substantially diametrically opposite relationship, said housing including a detonating passage leading to a detonable charge, said spherical rotor including a locking recess engaged by a releasable projection in said housing to lock said spherical rotor in a safety position wherein said first orifice is spaced from said detonating passage in the circumferential direction, said projection disposed diametrically opposite said detonating passage, a first cut-out formed in said spherical rotor periphery adjacent said first orifice to reduce the mass of said spherical rotor, the improvement wherein a second cut-out is provided in said spherical rotor peripheral adjacent said second orifice and diametrically opposite said first orifice to further reduce the mass of said spherical rotor, said first and second cut-outs being arranged and configured such that no portion thereof overlies said detonating passage when said spherical rotor is in said safety position, said first and second cut-outs being of equal volume and lying on said first and second sides, respectively, said locking recess disposed between said first cut-out and said second orifice on said first side of said spherical rotor, and a passage-covering portion of said spherical rotor periphery being disposed diametrically opposite said locking recess, said passage-covering portion being positioned between said second cut-out and said first orifice on said second side of said spherical rotor, said passage-covering portion arranged to overlie said detonating passage in said safety position of said rotor said spherical periphery of said spherical rotor including a first surface area positioned between said passage-covering portion and said first orifice and a second surface area positioned between said passage-covering portion and said second cut-out, said first and second surface areas making surface area contact with said spherical surface of said spherical cavity to block communication between said detonating passage and said first and second orifices when said spherical rotor is in said safety position, each of said first and second cut-outs being formed by a pair of flat walls oriented in L-shape, said walls extending perpendicularly to one another, each of said walls extending to said periphery of said rotor.
- 6. A mechanism according to claim 5, wherein each said cut-outs is empty.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3435402 |
Sep 1984 |
DEX |
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Parent Case Info
This application is a divisional of application Ser. No. 775,400, filed Sept. 12, 1985, now U.S. Pat. No. 4,691,635.
US Referenced Citations (8)
Foreign Referenced Citations (8)
Number |
Date |
Country |
715702 |
Dec 1941 |
DE2 |
1077575 |
Mar 1960 |
DEX |
2520117 |
Nov 1975 |
DEX |
3205153 |
Sep 1983 |
DEX |
3224749 |
Jan 1984 |
DEX |
1134838 |
Apr 1957 |
FRX |
1345750 |
Jan 1963 |
FRX |
257333 |
Aug 1926 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
775400 |
Sep 1985 |
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