Patent US3789730A successfully refreshed from Google Patents.
US3789730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic weapon with self locking bolt breech block
Assignee: Rheinmetall Industrie AG
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Filing: 1971-08-24
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Granted: 1974-02-05
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Expires: 1991-08-24
Abstract
Abstract An automatic weapon including a self locking bolt which comprises a weapon casing defining a loading chamber. A breech block moves forwards and back and is adapted to insert a cartridge into the loading chamber during the forward movement of the breech block. At least three laterally pivotable locking bolts are provided symmetrically to the longitudinal central axis of the breech block, for complete locking of the breech block against the weapon casing.
Inventors
- 👤 A Helmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:40
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/37; F41A3/00; F41A3/12; F41A3/36; F41A3/38; F41A3/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
An automatic weapon including a self locking bolt comprising a weapon casing defining a loading chamber, a breech block moving forwards and back and adapted to insert a cartridge into said loading chamber during the forward movement of said breech block, at least three laterally pivotable locking bolt means provided symmetrically to the longitudinal central axis of said breech block, for complete locking of said breechblock against said weapon casing, one of said locking bolts is arranged in the vertical longitudinal central plane of said weapon casing, cartridge magazines, said weapon casing has two apertures for receiving one end of each of said cartridge magazines, the latter are arranged, in cross-section symmetrical with respect to the vertical longitudinal central plane of said weapon casing, and each of said cartridge magazines is disposed between two adjacent locking bolt means.
Claim 2
Dependent Claim
138 words
An automatic weapon including a self locking bolt comprising a weapon casing defining a loading chamber, a breech block moving forwards and back and adapted to insert a cartridge into said loading chamber during the forward movement of said breech block, at least three laterally pivotable locking bolt means provided symmetrically to the longitudinal central axis of said breech block, for complete locking of said breechblock against said weapon casing, one of said locking bolts is arranged in the vertical longitudinal central plane of said weapon casing, cartridge magazines, said weapon casing has two apertures for receiving one end of each of said cartridge magazines, the latter are arranged, in cross-section symmetrical with respect to the vertical longitudinal central plane of said weapon casing, and each of said cartridge magazines is disposed between two adjacent locking bolt means.
Claim 3
Dependent Claim
127 words
An automatic weapon including a self locking bolt comprising a weapon casing defining a loading chamber, a breech block moving forwards and back and adapted to insert a cartridge into said loading chamber during the forward movement of said breech block, at least three laterally pivotable locking bolt means provided symmetrically to the longitudinal central axis of said breechblock, for complete locking of said breech block against said weapon casing, said weapon casing includes guide faces constituting arcs of a circle in cross-section arranged around a closed sector thereof for guidance of said breech block during its forward and backward movement, and said guide faces are provided radially to said locking bolt means, and said breech block, in cross section, has chord-like truncations between said guide faces.
Claim 4
Dependent Claim
127 words
An automatic weapon including a self locking bolt comprising a weapon casing defining a loading chamber, a breech block moving forwards and back and adapted to insert a cartridge into said loading chamber during the forward movement of said breech block, at least three laterally pivotable locking bolt means provided symmetrically to the longitudinal central axis of said breechblock, for complete locking of said breech block against said weapon casing, said weapon casing includes guide faces constituting arcs of a circle in cross-section arranged around a closed sector thereof for guidance of said breech block during its forward and backward movement, and said guide faces are provided radially to said locking bolt means, and said breech block, in cross section, has chord-like truncations between said guide faces.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |