Radiation shielded electron discharge device
阅读：769发布：2022-06-19
专利汇可以提供Radiation shielded electron discharge device专利检索，专利查询，专利分析的服务。并且An electron discharge device is provided with shields to protect against inadvertent emission of penetrating electromagnetic radiation. The positions and mounting of the shields is designed to provide shielding in all directions which is relatively undefeatable by inadvertent tampering by the user.，下面是Radiation shielded electron discharge device专利的具体信息内容。
1. A high voltage electron discharge device comprising an evacuated cylindrical glass envelope having a plurality of electrodes therein and being surrounded by radiation shielding means intimately associated with said device comprising: first shield means bonded to said envelope comprising elastomeric polymer binder means including a radiation attenuating filler in an amount sufficient to provide a radiation attenuating factor of about 10 per 0.040-0.045 inch thickness of said first shield, and having flame retardant means therein; and second shielding means adjacent said envelope comprising a plurality of shield means coaxially mounted generally normal to the axis of said device including at least one shield mounted adjacent one end of said cylindrical envelope and at least one other shield mounted adjacent the opposite end of said envelope, said shields cooperating to provide a complete shield which will intercept internally generated radiation regardless of direction.
2. The device of claim 1 wherein said filler is lead oxide and the amount of filler in said first shield is about 2.5-3 parts by weight per part binder.
3. The device of claim 1 wherein said second shielding means comprise metallic discs mounted within said envelope and having an effective thickness of about 80 mils and sufficient diameter to provide, with said first shield, complete surroundment of said electrodes.
4. The device of claim 1 wherein said second shielding means includes at least one shield mounted externally of said envelope.
5. The device of claim 1 wherein one of said electrodes comprises an anode having an anode cap protruding from one end of said envelope and a series of leads protruding from an opposite end of said envelope and said second shielding means includes a shield for said anode cap and another shield in intimate contact with said leads protruding from said envelope, said shieldS being made of insulative material having radiation-attenuating properties similar to said first shield and being positioned contiguous to said first shield.
6. The device of claim 1 wherein said binder is selected from the class consisting of chlorinated polyethylene, chlorosulfonated polyethylene, and silicone rubber.
7. The device of claim 1 wherein said binder is chlorosulfonated polyethylene and said filler is lead oxide.
8. A high voltage electron discharge device comprising an evacuated cylindrical glass envelope having a cathode and an anode therein and being substantially surrounded by a first shielding means comprising a lead-oxide-filled chlorosulfonated polyethylene shield having fire-retardant means therein and having a loading ratio of about 2.5 to 3 parts by weight lead oxide per part binder and having a total thickness of about 0.125 inch; said device having second shielding means within said envelope comprising a first metallic disc having an effective thickness of about 80 mils coaxially positioned in said envelope adjacent one end of said cylinder and a second metallic disc having an effective thickness of about 80 mils positioned adjacent the opposite end of said cylinder, said discs being mounted normal to the axis of said device and having sufficient diameter to intersect any radiation having a direction which would avoid intersection with said first shield.
9. The device of claim 8 wherein said anode is connected to an anode cap passing through one end of said cylindrical glass envelope and said cathode is connected to leads which pass through the opposite end of said envelope and into a base comprising an insulating member having a series of parallel pins protruding therefrom; said base having a diameter slightly larger than said envelope and being contiguous with one end of said envelope; and said first shield extending from said anode cap to said base and having an inner diameter approximately equal to the diameter of said envelope to provide a snug fit thereon and an interference fit with said base.
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