US3325317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead azide-elastomer explosives in film and sheet form
Assignee: Individual
•
Filing: 1966-10-03
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Granted: 1967-06-13
•
Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jr H William Voigt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:36
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C08; C08L; C08L39/00; C08L39/04; C08L39/06; Y; Y10; Y10S; Y10S102/00; Y10S102/701
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR THE PREPARATION OF EXPLOSIVE LEAD AZIDE THIN FILMS WHICH DETONATE AND PROPAGATE COMPLETELY, SAID FILM HAVING A SPECIFIC IMPULSE OF AS LOW AS ABOUT 1/8 THAT OF A COMPARABLE PENTAERYTHRITOL TETRANITRATE THIN EXPLOSIVE FILM AND COMPRISING THE STEPS OF PRECOATING COLLOIDAL LEAD AZIDE WITH 0.1% BY WEIGHT POLYVINYL PYRROLIDONE HAVING A MOLECULAR WEIGHT OF ABOUT 90,000, ADDING GUAR GUM POWDER THICKNER TO A ATER-DISPERSED ELASTOMER TO FORM A MIXTURE, STIRRING WATER INTO SAID MIXTURE TO FORM A SLURRY, ADDING SAID PRECOATED LEAD AZIDE INTO SLURRY TO FORM A GEL PASTE DISPERSION, THINLY AND UNIFORMLY SPREADING SAID GEL PASTE DISPERSION ONTO AN INERT SUBSTRATE, AND DRYING SAID ISPERSION ON SAID SUBSTRATE TO FORM A DRIED THIN FILM OF EXPLOSIVE LEAD AZIDE.
Claim 2
Dependent Claim
123 words
A PROCESS FOR THE PREPARATION OF EXPLOSIVE LEAD AZIDE THIN FILMS WHICH DETONATE AND PROPAGATE COMPLETELY, SAID FILM HAVING A SPECIFIC IMPULSE OF AS LOW AS ABOUT 1/8 THAT OF A COMPARABLE PENTAERYTHRITOL TETRANITRATE THIN EXPLOSIVE FILM AND COMPRISING THE STEPS OF PRECOATING COLLOIDAL LEAD AZIDE WITH 0.1% BY WEIGHT POLYVINYL PYRROLIDONE HAVING A MOLECULAR WEIGHT OF ABOUT 90,000, ADDING GUAR GUM POWDER THICKNER TO A ATER-DISPERSED ELASTOMER TO FORM A MIXTURE, STIRRING WATER INTO SAID MIXTURE TO FORM A SLURRY, ADDING SAID PRECOATED LEAD AZIDE INTO SLURRY TO FORM A GEL PASTE DISPERSION, THINLY AND UNIFORMLY SPREADING SAID GEL PASTE DISPERSION ONTO AN INERT SUBSTRATE, AND DRYING SAID ISPERSION ON SAID SUBSTRATE TO FORM A DRIED THIN FILM OF EXPLOSIVE LEAD AZIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |