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Title: US4835433: Apparatus for direct conversion of radioactive decay energy to electrical energy
[ Derwent Title ]

Country: US United States of America

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8 pages

Inventor: Brown, Paul M.; Boise, ID

Assignee: Nucell, Inc., Portland, OR
other patents from NUCELL, INC. (410830) (approx. 1)
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Published / Filed: 1989-05-30 / 1988-02-08

Application Number: US1988000153070

IPC Code: Advanced: G21H 1/04;
Core: G21H 1/00;
IPC-7: G21H 1/00;

U.S. Class: Current: 310/305; 136/202; 376/320; 976/DIG.412;
Original: 310/305; 136/202; 376/320;

Field of Search: 376/320,321 310/301,304,305 136/202

Priority Number:
1986-04-23  US1986000855607

Abstract: A nuclear battery in which the energy imparted to radioactive decay products during the spontaneous disintegrations of radioactive material is utilized to sustain and amplify the oscillations in a high-Q LC tank circuit is provided. The circuit inductance comprises a coil wound on a core composed of radioactive nuclides connected in series with the primary winding of a power transformer. The core is fabricated from a mixture of three radioactive materials which decay primarily by alpha emission and provides a greater flux of radioactive decay products than the equivalent amount of a single radioactive nuclide.

Attorney, Agent or Firm: Murray, Leslie G. ;

Primary / Asst. Examiners: Kyle, Deborah L.; Wasil, Daniel

Maintenance Status: E1 Expired  Check current status

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Related Applications:
Application Number Filed Patent Pub. Date  Title
US1986000855607 1986-04-23       

Parent Case:

    This is a continuation of application Ser. No. 06/855,607, filed Apr. 23, 1986, now abandoned.

Designated Country: DE FR GB NL SE 

Family: Show 12 known family members

First Claim:
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I claim:     1. Apparatus for converting radioactive energy to electrical energy, said apparatus comprising:
  • an electrical conductor wound on a core to form an inductor having a first inductance, said core being of radioactive material;
  • a capacitor having a predetermined capacitance C;
  • a transformer having a primary winding, a secondary winding and a transformer core, said primary winding and said secondary winding wound on said transformer core, said primary winding having a second inductance, said secondary winding for coupling electrical energy to a workload; and
  • electrical conductor means for connecting said inductor, said capacitor and said primary winding in series fashion to form a series LCR circuit wherein electrical oscillations are induced, said electrical oscillations being sustained and amplified by the energy transferred to said electrical conductor by the radioactive decay of said radioactive material, wherein L is the sum of said first inductance and said second inductance and R is a predetermined resistance.

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Forward References: Show 17 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (17)   |   Backward references (10)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 8pp US2548225* 1951-04 Linder    
Get PDF - 4pp US2712097* 1955-06 Auwarter    
Get PDF - 6pp US2739283* 1956-03 Roehrig    
Get PDF - 6pp US3290522* 1966-12 Ginell    
Get PDF - 3pp US3409820  1968-11 Burke   Electric power apparatus
Get PDF - 5pp US3562613  1971-02 Adler  Baumgartner Freres S.A. TIMEPIECE DRIVEN BY NUCLEAR ENERGY
Get PDF - 5pp US3939366  1976-02 Ato et al.  Agency of Industrial Science & Technology Method of converting radioactive energy to electric energy and device for performing the same
Get PDF - 18pp US3944438  1976-03 Hursen et al.  Arco Medical Products Company Generation of electrical power
Get PDF - 12pp US4489269  1984-12 Edling et al.   Atomic battery with beam switching
  * some details unavailable
Foreign References: None

Other Abstract Info: CHEMABS 108(16)139590J DERABS C87-348784

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