Patent US4538520A successfully refreshed from Google Patents.
US4538520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun cartridge
Assignee: WILHELM BRENNEKE KG ILMENAUWEG 2 3012 LANGENHAGEN 1 GERMANY
•
Filing: 1983-11-07
•
Granted: 1985-09-03
•
Expires: 2003-11-07
Abstract
Abstract A cartridge includes a gun barrel bullet made up of a metal head and an elastically deformable plug made up of two parts. The first plug part is connected to the head and defines an open ended chamber which is closed off by the second plug part. The first part includes a tapering pin which projects downwardly through the chamber and engages in an opening in the second part so that on firing the bullet remains an integral unit.
Inventors
- 👤 Alfons Schmitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:17
CPC Classifications
F; F42; F42B; F42B7/00; F42B7/02; F42B7/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
A gun cartridge including a bullet including a metal head having a pointed end and a rear face, an elastically deformable first plug part connected to said rear face of said metal head, having wall means defining an interior open ended space, and having at least one tapering pin extending down through said space to said open end, a second plug part positively connected to said open end of said first plug part to substantially close off said space, and defining an opening therein in which said tapering pin engages.
Claim 2
Dependent Claim
90 words
A gun cartridge including a bullet including a metal head having a pointed end and a rear face, an elastically deformable first plug part connected to said rear face of said metal head, having wall means defining an interior open ended space, and having at least one tapering pin extending down through said space to said open end, a second plug part positively connected to said open end of said first plug part to substantially close off said space, and defining an opening therein in which said tapering pin engages.
Claim 3
Dependent Claim
30 words
A cartridge according to claim 1, wherein said pin is in the shape of a truncated cone and in that said opening defined in said second plug part is circular.
Claim 4
Dependent Claim
57 words
A cartridge according to claim 1, wherein said second plug part is a thin plate having a peripheral edge set at an angle to the plane of said plate, which edge fits in seal-tight manner against an inner surface of said wall means of said first plug part at said open end to provide said positive connection.
Claim 5
Dependent Claim
15 words
A cartridge according to claim 3, wherein said thin plate has air holes defined therein.
Claim 6
Dependent Claim
27 words
A cartridge according to claim 1, wherein the length of said closed space is a relatively large proportion of the overall length of said combined plug parts.
References Cited (Backward Citations)
DE2615859A1
Cited
DE2929628A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |