Patent US3034869A successfully refreshed from Google Patents.
US3034869A
Expired / Lapsed
US
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Catalyst retainer
Assignee: Scientific Design LLC
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Filing: 1958-05-29
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Granted: 1962-05-15
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Expires: 1978-05-29
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:52
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/008; B01J8/02; B01J8/06; B01J2208/00; B01J2208/00796; B01J2208/00884; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/49876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN COMBINATION, A CATALYTIC REACTOR TUBE; CATALYST PARTICLES LOCATED THEREIN; AND A COMPRESSIBLE HELICAL SPRING HAVING AT LEAST ONE END A CATALYST PARTICLE RETAINING MEANS; SAID RETAINING MEANS BEING INWARDLY DIRECTED AND ADAPTED TO PREVENT THE PASSAGE OF CATALYST PARTICLES THERETHROUGH, AND BEING INTERPOSED BETWEEN SAID CATALYST PARTICLES AND SAID HELICAL SPRING; SAID HELICAL SPRING HAVING A PLURALITY OF CONVOLUTIONS IN CONTINUOUS CIRCUMFERENTIAL CONTACT WITH THE INNER WALL OF SAID TUBE NEAR A TUBE EXTREMITY AND EXERTING A RADIALLY DRIECTED FORCE AGAINST THE INNER WALL OF SAID TUBE, SAID RADIALLY DIRECTED FORCE PROVIDING THE SOLE MEANS OF CATALYST SUPPORT SPRING RETENTION IN THE SAID TUBE.
Claim 2
Dependent Claim
105 words
IN COMBINATION, A CATALYTIC REACTOR TUBE; CATALYST PARTICLES LOCATED THEREIN; AND A COMPRESSIBLE HELICAL SPRING HAVING AT LEAST ONE END A CATALYST PARTICLE RETAINING MEANS; SAID RETAINING MEANS BEING INWARDLY DIRECTED AND ADAPTED TO PREVENT THE PASSAGE OF CATALYST PARTICLES THERETHROUGH, AND BEING INTERPOSED BETWEEN SAID CATALYST PARTICLES AND SAID HELICAL SPRING; SAID HELICAL SPRING HAVING A PLURALITY OF CONVOLUTIONS IN CONTINUOUS CIRCUMFERENTIAL CONTACT WITH THE INNER WALL OF SAID TUBE NEAR A TUBE EXTREMITY AND EXERTING A RADIALLY DRIECTED FORCE AGAINST THE INNER WALL OF SAID TUBE, SAID RADIALLY DIRECTED FORCE PROVIDING THE SOLE MEANS OF CATALYST SUPPORT SPRING RETENTION IN THE SAID TUBE.
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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |