Patent US2904487A successfully refreshed from Google Patents.
US2904487A
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US
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Control device
Assignee: Individual
•
Filing: 1954-11-17
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Granted: 1959-09-15
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Expires: 1974-11-17
Abstract
No abstract record available.
Inventors
- 👤 James J Dickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:11
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/02; G21C7/06; G21C7/08; G21C7/12; G21C7/16; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SELF-POWEDERED DEVICE FOR THE AUTOMATIC CONTROL OF A NUCLEAR REACTOR COMPRISING A SATIONERY HOLLOW CURVED CONTROL MEMBER OPEN ALONG ONE EDGE AND BEING MADE OF A NEUTRON ABSORBING MATERIAL, A MOVABLE CURVED CONTROL MEMBER MADE OF A NEUTRON ABSORBING MATERIAL IN THE FORM OF A PLATE AND BEING MOUNTED TO ROTATE INTO AND OUT OF THE STATIONERY CONTROL MEMBER, A BIMETAL HELIX CONSISTING OF A STRIP CONTAINING URANIUM AND A METAL STRIP BONDED THERETO AND HAVING A COEFFICIENT OF THERMAL EXPANSION SUBSTANTIALLY EQUIVALENT TO THAT OF THE URANIUM-CONTAINING STRIP, AND MEANS FOR TRANSLATING THE ROTARY MOTIONS OF THE BIMETAL HELIX TO THE MOVABLE CONTROL MEMBER
Claim 2
Dependent Claim
106 words
A SELF-POWEDERED DEVICE FOR THE AUTOMATIC CONTROL OF A NUCLEAR REACTOR COMPRISING A SATIONERY HOLLOW CURVED CONTROL MEMBER OPEN ALONG ONE EDGE AND BEING MADE OF A NEUTRON ABSORBING MATERIAL, A MOVABLE CURVED CONTROL MEMBER MADE OF A NEUTRON ABSORBING MATERIAL IN THE FORM OF A PLATE AND BEING MOUNTED TO ROTATE INTO AND OUT OF THE STATIONERY CONTROL MEMBER, A BIMETAL HELIX CONSISTING OF A STRIP CONTAINING URANIUM AND A METAL STRIP BONDED THERETO AND HAVING A COEFFICIENT OF THERMAL EXPANSION SUBSTANTIALLY EQUIVALENT TO THAT OF THE URANIUM-CONTAINING STRIP, AND MEANS FOR TRANSLATING THE ROTARY MOTIONS OF THE BIMETAL HELIX TO THE MOVABLE CONTROL MEMBER
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |