Patent Number: 050650335
Section: claims

1. A coupling apparatus for providing cable controls to a storage unit in a radiographic system for manipulating a quantity of radioactive material, in a radioactive capsule, between a stored position and a use position, the storage unit having a passage through it for storing said radioactive capsule in the passage and shielding the surrounding environment from the stored radioactive material, a flexible leader attached to said radioactive capsule adapted to be guided through said passage, and comprising: disconnectable coupling means having a connector assembly fixed to said storage unit at one end of said passage and a separable control cable assembly of tubular shape,  said connector assembly having a tubular aperture for receiving said separable control cable assembly endwise therein, and means for releasably locking said control cable assembly to said connector assembly,  said connector assembly having means responsive to movement of said flexible leader for automatic locking of said radioactive capsule in the stored position upon return of said radioactive capsule to the stored position within said storage unit,  said responsive means comprising:  a slide member and a sleeve, said sleeve having a hole defined therein, said slide member having a larger diameter aperture and a smaller diameter aperture defined therein,  a mass attached to said source cable means for engagement with said sleeve hole and said small diameter aperture,  said slide member having an open position during which said sleeve hole and said larger diameter aperture are in alignment, and a locked position during which said sleeve hole and said smaller diameter aperture are in alignment capturing said mass therebetween,  biasing means for urging said slide member toward said locked position, and  said slide member and said sleeve defining therebetween interlocking means for holding said slide member in said open position, said mass triggering the interlocking means to disengage upon return of said radioactive capsule to the stored position allowing said biasing means to move said slide member.  said separable control cable assembly having means to receive said engagement means for locking said separable control cable assembly against withdrawal from said tubular aperture upon rotation of said dial;  said means for preventing, including said one end of said slide member engaging sides of said aperture of said dial surface while said slide member is in said open position and said dial in said operate position, thereby preventing movement of said dial from said operate position until said slide member is slid from said operate position to said locked position.  providing a connector assembly fixed to said storage unit at one end of said passage and a separable control cable assembly of tubular shape,  attaching said control cable assembly to said storage unit, said connector assembly having a tubular aperture for receiving said separable control cable assembly endwise therein, and means for releasably locking said control cable assembly to said connector assembly, automatically locking said radioactive capsule in said stored position upon return of said radioactive capsule to the stored position within said storage unit,  providing a slide member and a sleeve, said sleeve having a hole defined therein, said slide member having a larger diameter aperture and a smaller diameter aperture defined therein,  providing a mass attached to said source cable means for engagement with said sleeve hole and said small diameter aperture, said slide member having an open position during which said sleeve hole and said larger diameter aperture are in alignment, and a locked position during which said sleeve hole and said smaller diameter aperture are in alignment capturing said mass therebetween,  and providing biasing means for urging said slide member toward said locked position, and said slide member and said sleeve defining therebetween interlocking means for holding said slide member in said open position, said mass triggering the interlocking means to disengage upon return of said radioactive capsule to the stored position allowing said biasing means to move said slide member.  said separable control cable assembly having means to receive said engagement means for locking said separable control cable assembly against withdrawal from said tubular aperture upon rotation of said dial.  a slide member and a sleeve, said sleeve having a hole defined therein, said slide member having a larger diameter aperture and a smaller diameter aperture defined therein,  a mass attached to said source cable means, said mass having a diameter too large to fit through said sleeve hole and said smaller diameter aperture and small enough to fit through said larger diameter aperture,  said slide member having an open position during which said sleeve hole and said larger diameter aperture are in alignment allowing movement of said source cable means with attached mass in one direction through said larger diameter aperture, and a locked position during which said sleeve hole and said smaller diameter aperture are in alignment capturing said mass therebetween thereby preventing any movement of said source cable means,  biasing means for urging said slide member toward said locked position,  said slide member and said sleeve defining therebetween interlocking means for holding said slide member in said open position, said mass triggering the interlocking means to disengage upon return of said radioactive capsule to the stored position allowing said biasing means to urge said slide member from said open position to said locked position thereby safely storing said radioactive capsule in said stored position.  a slide member and a sleeve, said sleeve having a hole defined therein, said slide member having a larger diameter aperture and a smaller diameter aperture defined therein,  a mass attached to said source cable means for engagement with said sleeve hole and said smaller diameter aperture,  said slide member having an open position during which said sleeve hole and said larger diameter aperture are in alignment, and a locked position during which said sleeve hole and said smaller diameter aperture are in alignment capturing said mass therebetween.  biasing means for urging said slide member toward said locked position,  said slide member and said sleeve defining therebetween interlocking means for holding said slide member in said open position, said mass triggering the interlocking means to disengage upon return of said radioactive capsule to the stored position allowing said biasing means to move said slide member. 2. A coupling apparatus according to claim 1 wherein said means for releasably locking includes a dial mounted in said connector assembly for concentric rotation about the axis of said tubular aperture, said dial having engagement means activated upon rotating said dial, 3. A coupling apparatus according to claim 2 wherein said mass and said radioactive capsule are attached to said flexible leader at substantially opposite ends thereof, said mass extending into said connector assembly when said radioactive capsule is stored in said storage unit. 4. A coupling apparatus according to claim 3 wherein said dial has a connect position during which said engagement means are inoperative and an operate position during which said engagement means are activated to engage said means for receiving said engagement means, thereby locking said separable control cable assembly against withdrawal. 5. A coupling apparatus according to claim 4 wherein said dial further includes means providing a dial surface, said dial surface having an aperture formed therein, said dial surface for engaging one end of said slide member when said slide member is in the locked position and said dial in said connect position, thereby preventing movement of said slide member from said locked position to said open position, said aperture to receive said one end of said slide member when said dial is in said operate position and said slide member in said open position. 6. A coupling apparatus according to claim 5 wherein said biasing means includes a spring. 7. A coupling apparatus according to claim 6 wherein said interlocking means comprises a recess defined in said slide member for receiving said sleeve. 8. A coupling apparatus according to claim 7 further including means for preventing detachment of said separable control cable assembly from said connector assembly until said radioactive capsule is stored in said stored position, 9. A method for providing cable controls to a storage unit on a radiographic system for manipulating a quantity of radioactive material, in a radioactive capsule, between a stored position and a use position, the storage unit having a passage through it for storing said radioactive capsule in the passage and shielding the surrounding environment from the stored radioactive material, a flexible leader attached to said radioactive capsule adapted to be guided through said passage, and comprising the steps of: 10. A method according to claim 9 wherein said means for releasably locking includes a dial mounted in said connector assembly for concentric rotation about the axis of said tubular aperture, said dial having engagement means activated upon rotating said dial, 11. A method according to claim 8 wherein said mass and said radioactive capsule are attached to said flexible leader at substantially opposite ends thereof, said mass extending into said connector assembly when said radioactive capsule is stored in said storage unit. 12. In a radiographic apparatus for manipulating a quantity of radioactive material between a stored position and a use position, including a capsule of said radioactive material, a storage unit with means defining a passage through it for storing the capsule in the passage and shielding the surrounding environment from the stored radioactive material, a source cable means attached to said radioactive capsule and adapted to be guided through said passage, said storage unit passage having respective inlet and outlet ports, a separable control cable means, connector means for receiving the control cable means and disposed at the inlet port of the storage unit, said separable control cable means adapted for releasable engagement with said source cable means, said source cable assembly in combination with the connector means comprising: 13. In a radiographic apparatus as set forth in claim 12 wherein said interlocking means comprises a recess defined in said slide member for receiving said sleeve. 14. In a radiographic apparatus as set forth in claim 13 wherein said mass comprises a ball on said source cable means, said ball being disposed at an end of said source cable remote from said radioactive capsule. 15. In a radiographic apparatus as set forth in claim 14 wherein said biasing means for urging comprises a spring. 16. In a radiographic apparatus for manipulating a quantity of radioactive material between a stored position and a use position, including a capsule of said radioactive material, a storage unit with means defining a passage through it for storing the capsule in the passage and shielding the surrounding environment from the stored radioactive material, a source cable means attached to said radioactive capsule and adapted to be guided through said passage, said storage unit passage having respective inlet and outlet ports, a separable control cable means, connector means for receiving the control cable means and disposed at the inlet port of the storage unit, said separable control cable means adapted for releasable engagement with said source cable means, said source cable assembly in combination with the connector means comprising: 17. In a radioactive apparatus as set forth in claim 16 wherein said interlocking means comprises a recess defined in said slide member for receiving said sleeve. 18. In a radioactive apparatus as set forth in claim 17 wherein said mass comprises a ball on said source cable means, said ball being disposed at an end of said source cable remote from said radioactive capsule. 19. In a radiographic apparatus as set forth in claim 18 wherein said biasing means for urging comprises a spring.