Patent US2727233A successfully refreshed from Google Patents.
US2619035A
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Production of ventless delay initiators for explosive or other charges capable of exothermic reaction
Assignee: Imperial Chemical Industries Ltd
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Filing: 1948-11-01
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Granted: 1952-11-25
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Expires: 1968-11-01
Abstract
No abstract record available.
Inventors
- 👤 Idwal O Lewis
- 👤 Robert D J Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:58
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/16; F42B3/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A DELAY ELECTRIC DETONATOR COMPRISING AN ELECTRICALLY ACTUATED IGNITING CHARGE, AN INITIATING CHARGE, AND AN INTERPOSED DELAY FUSE ELEMENT CONSISTING OF A LENGTH CUT OFF FROM A FUSE COMPRISING A FLEXIBLE ENVELOPE SURROUNDING A CHARGE BASED ON INORGANIC REDUCING AGENT AND OXIDIZING AGENT POWDERS ENCLOSED IN A DETONATOR TUBE, SAID FLEXIBLE ENVELOPE SURROUNDING AN UNBROKEN CONTINUOUSLY EXTRUDED CORE OF A THERMOPLASTIC COMPOSITION OF LOW GAS EVOLUTION CHARACTERISTICS COMPRISING INORGANIC REDUCING AGENT AND OXIDIZING AGENT POWDERS EMBEDDED IN A CONTINUUM OF AN ORGANIC THERMOPLASTIC AND ADAPTED ON IGNITION TO REACT
Claim 2
Dependent Claim
89 words
A DELAY ELECTRIC DETONATOR COMPRISING AN ELECTRICALLY ACTUATED IGNITING CHARGE, AN INITIATING CHARGE, AND AN INTERPOSED DELAY FUSE ELEMENT CONSISTING OF A LENGTH CUT OFF FROM A FUSE COMPRISING A FLEXIBLE ENVELOPE SURROUNDING A CHARGE BASED ON INORGANIC REDUCING AGENT AND OXIDIZING AGENT POWDERS ENCLOSED IN A DETONATOR TUBE, SAID FLEXIBLE ENVELOPE SURROUNDING AN UNBROKEN CONTINUOUSLY EXTRUDED CORE OF A THERMOPLASTIC COMPOSITION OF LOW GAS EVOLUTION CHARACTERISTICS COMPRISING INORGANIC REDUCING AGENT AND OXIDIZING AGENT POWDERS EMBEDDED IN A CONTINUUM OF AN ORGANIC THERMOPLASTIC AND ADAPTED ON IGNITION TO REACT
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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |