US3352239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge case
Assignee: Dynamit Nobel AG
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Filing: 1965-09-07
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Granted: 1967-11-14
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Schinnerer Thomas
- 👤 Umbach Hans
- 👤 Frobel Elise
- 👤 Frogel Ernst Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
F; F42; F42B; F42B7/00; F42B7/02; F42B7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A CARTRIDGE, COMPRISING: A GENERALLY TUBULAR CARTRIDGE CASE HAVING AN AXIS, A FORWARD DISCHARGING END AND A REARWARD IGNITION END; A PROPELLANT CHARGE IN SAID CASE; BUCKSHOT IN SAID CASE FORWARDLY OF SAID CHARGE; A SYNTHETIC POLYMER CLOSURE DISK CLOSING SAID CASE FORWARDLY OF SAID BUCKSHOT, HAVING A WEB PORTION, A FORWARD TUBULAR PORTION EXTENDING FROM THE RIM OF SAID WEB PORTION, AND A REARWARD TUBULAR PORTION EXTENDING FROM THE RIM OF SAID WEB PORTION; SAID DISK BEING SYMMETRICAL WITH RESPECT TO A PLANE EXTENDING THROUGH SAID WEB PORTION AND PERPENDICULAR TO THE AXIS OF SAID CASE SO THAT SAID DISK MAY BE INSERTED IN SAID CASE SO THAT SAID DISK CASE HAVING A FORWARD U-CROSS SECTIONAL SHAPED ANNULAR PORTION REVERSELY FLANGED AND ENGAGING SAID FORWARD TUBULAR PORTION ON OPPOSITE SIDES TO PROVIDE A LABYRINTH TYPE FORWARD SEAL.
Claim 2
Dependent Claim
138 words
A CARTRIDGE, COMPRISING: A GENERALLY TUBULAR CARTRIDGE CASE HAVING AN AXIS, A FORWARD DISCHARGING END AND A REARWARD IGNITION END; A PROPELLANT CHARGE IN SAID CASE; BUCKSHOT IN SAID CASE FORWARDLY OF SAID CHARGE; A SYNTHETIC POLYMER CLOSURE DISK CLOSING SAID CASE FORWARDLY OF SAID BUCKSHOT, HAVING A WEB PORTION, A FORWARD TUBULAR PORTION EXTENDING FROM THE RIM OF SAID WEB PORTION, AND A REARWARD TUBULAR PORTION EXTENDING FROM THE RIM OF SAID WEB PORTION; SAID DISK BEING SYMMETRICAL WITH RESPECT TO A PLANE EXTENDING THROUGH SAID WEB PORTION AND PERPENDICULAR TO THE AXIS OF SAID CASE SO THAT SAID DISK MAY BE INSERTED IN SAID CASE SO THAT SAID DISK CASE HAVING A FORWARD U-CROSS SECTIONAL SHAPED ANNULAR PORTION REVERSELY FLANGED AND ENGAGING SAID FORWARD TUBULAR PORTION ON OPPOSITE SIDES TO PROVIDE A LABYRINTH TYPE FORWARD SEAL.
References Cited (Backward Citations)
FR1009415A
Cited
BE506372A
Cited
FR1051698A
Cited
CH306674A
Cited
FR1105279A
Cited
FR1094753A
Cited
US2842057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |