US4020763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge construction
Assignee: Individual
•
Filing: 1975-11-05
•
Granted: 1977-05-03
•
Expires: 1995-11-05
Abstract
Abstract An improved cartridge comprising an outer case member, an inner base member and an intermediate bushing member wherein the case may be plastic or similar material, the inner base member is of plastic or any other material, and the bushing member formed by injection between the case member and the base member. The intermediate bushing formed and interposed between the case member and the base member closely joins the case to the base to form a monobloc assembly.
Inventors
- 👤 Antonio Iruretagoyena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:19
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/26; F42B5/30; F42B5/307; F42B5/313
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
Improved cartridge without metallic reinforcement portions comprising an exterior or case, an internal or base member and an intermediate bushing member all of which are of plastic material, said bushing member being disposed between said case and said base by injection and closely joining said case and said base to provide an assembly forming a monobloc body provided with central orifice for a primer, said bushing member having laterallly extending portions extending externally of and over laterally extending portions of said base member so that said base member is completely enclosed within said cartridge.
Claim 2
Dependent Claim
94 words
Improved cartridge without metallic reinforcement portions comprising an exterior or case, an internal or base member and an intermediate bushing member all of which are of plastic material, said bushing member being disposed between said case and said base by injection and closely joining said case and said base to provide an assembly forming a monobloc body provided with central orifice for a primer, said bushing member having laterallly extending portions extending externally of and over laterally extending portions of said base member so that said base member is completely enclosed within said cartridge.
Claim 3
Dependent Claim
25 words
Improved cartridge, as defined in claim 1, characterized in that the case has a contour extending laterally of its axis to form an extraction collar.
Claim 4
Dependent Claim
37 words
Improved cartridge as defined in claim 2, characterized in that down from the extraction collar the case has a diameter greater than that in the rest of the cartridge for properly housing or reception into a gun.
Claim 5
Dependent Claim
81 words
Improved cartridge as defined in claim 3, characterized in that interior of the base does not enter into contact directly with the case and does not form part of the cartridge end and presents a central internal portion in contact with the gun powder, which provides resistance to the temperature and pressure conditions produced in the instant of firing, said base being united to the external case by means of the injected material rendering said intermediate bushing one conjunct body only.
Claim 6
Dependent Claim
41 words
Improved cartridge as defined in claim 4 so presented said base is in contact with said intermediate bushing having means for obtaining complete union between said base and said bushing obtained in a circular bevelling at one end of said base.
Claim 7
Dependent Claim
73 words
Improved cartridge as defined in claim 5, characterized in that the injected intermediate part closely joins the base, making the cartridge base and piston housing at the same time that surrounds the internal wall of said base in higher or lower degree, covering its bevel and extending towards its intersection with the cartridge case by means of a gradual lessening of the thickness of its wall, finishing in a point of insignificant thickness.
Claim 8
Dependent Claim
58 words
Improved cartridge as defined in claim 1 wherein said case extends over and covers said intermediate bushing member along annular side and end areas thereof and provides thereat an extraction member in the form of a circular boss on the end of the intermediate bushing member just at the meeting zone of the case and intermediate bushing 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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |