Patent US5331880A successfully refreshed from Google Patents.
US5331880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge-type breechblock for a gun
Assignee: Rheinmetall Industrie AG
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Filing: 1992-08-24
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Granted: 1994-07-26
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Expires: 2012-08-24
Abstract
Abstract A wedge-type breechblock is disposed at the breech end of a gun. A cartridge chamber having a length L1 in the wedge-type breechblock accommodates propellant igniters, with obturation being effected by the respective propellant igniters. A firing mechanism operatively disposed at the wedge-type breechblock detonates propellant igniters loaded into the cartridge chamber from a magazine. A propellant igniter magazine is disposed adjacent the wedge-type breechblock and includes a guide chute and individual propellant igniters lined up in a row in the guide chute. The propellant igniters each have a casing and a length L2 which is greater than the length L1 of the cartridge chamber so that when a propellant igniter is loaded in the cartridge chamber in a firing position, a rear portion of the propellant igniter remains within the casing.
Inventors
- 👤 Rolf Bartolles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:20
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/57
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
267 words
In a gun having a breech end, an arrangement comprising: a wedge-type breechblock disposed at the breech end of the gun; a cartridge chamber having a length L1 in said wedge-type breechblock for accommodating a propellant igniter; a propellant igniter magazine disposed adjacent said wedge-type breechblock and including a guide chute and individual propellant igniters lined up in a row in said guide chute, said individual propellant igniters each being at least partially encased by an exterior casing and having a length L2 which is longer than the length L1 of said cartridge chamber so that when one of said propellant igniters is loaded in said cartridge chamber in a firing position, a rear portion of said propellant igniter remains within said casing; loading means for loading one of said propellant igniters into said cartridge chamber from said magazine, said loading means including an engaging lever having a front, spring tensioned portion pivotably fastened to said breechblock for engaging one of a respective one of said casings and its associated said propellant igniter and for pushing the associated said propellant igniter into and out of said cartridge chamber; and a firing mechanism operatively disposed at said wedge-type breechblock for detonating a respective one of said propellant igniters in said cartridge chamber, with said firing mechanism being mounted for displacement relative to said breechblock, said engaging lever including grooves, and said firing mechanism including two pins which engage in said grooves so that, when said firing mechanism is displaced relative to said breechblock, said engaging lever is caused to rotate and to displace said associated said propellant igniter.
Claim 2
Dependent Claim
267 words
In a gun having a breech end, an arrangement comprising: a wedge-type breechblock disposed at the breech end of the gun; a cartridge chamber having a length L1 in said wedge-type breechblock for accommodating a propellant igniter; a propellant igniter magazine disposed adjacent said wedge-type breechblock and including a guide chute and individual propellant igniters lined up in a row in said guide chute, said individual propellant igniters each being at least partially encased by an exterior casing and having a length L2 which is longer than the length L1 of said cartridge chamber so that when one of said propellant igniters is loaded in said cartridge chamber in a firing position, a rear portion of said propellant igniter remains within said casing; loading means for loading one of said propellant igniters into said cartridge chamber from said magazine, said loading means including an engaging lever having a front, spring tensioned portion pivotably fastened to said breechblock for engaging one of a respective one of said casings and its associated said propellant igniter and for pushing the associated said propellant igniter into and out of said cartridge chamber; and a firing mechanism operatively disposed at said wedge-type breechblock for detonating a respective one of said propellant igniters in said cartridge chamber, with said firing mechanism being mounted for displacement relative to said breechblock, said engaging lever including grooves, and said firing mechanism including two pins which engage in said grooves so that, when said firing mechanism is displaced relative to said breechblock, said engaging lever is caused to rotate and to displace said associated said propellant igniter.
Claim 3
Dependent Claim
71 words
The arrangement of claim 1, wherein the casing of each said propellant igniter has a length L3 which is less than the length L2 of the propellant igniter, and the casing enclosed the rear end of the propellant igniter in a form locking manner so that, in order to fire the propellant igniter, the propellant igniter along with its casing, is pushed for loading the propellant igniter into the cartridge chamber.
Claim 4
Dependent Claim
41 words
The arrangement of claim 2, wherein each said casing has an annular groove into which engages the front portion of said engaging lever in order to load or extract the respective propellant igniter into and out of said cartridge chamber, respectively.
Claim 5
Dependent Claim
58 words
The arrangement of claim 1, wherein said casings each have a length which is approximately the same length as that of said propellant igniters, have a slot-shaped opening extending parallel to a longitudinal axis of said casing, and include on their side facing the wedge-type breechblock means for centering the propellant igniter disposed in the respective said casing.
Claim 6
Dependent Claim
16 words
The arrangement of claim 4, and further including chain studs connecting said casings with one another.
Claim 7
Dependent Claim
48 words
The arrangement of claim 4, wherein said front portion of said engaging lever is shaped to grip through the slot-shaped openings and around a bottom portion of the propellant igniter in order to load and remove the respective propellant igniter into and out of said cartridge chamber, respectively.
Claim 8
Dependent Claim
46 words
The arrangement of claim 1, wherein said firing mechanism includes a housing portion having a firing pin, said housing portion, in a firing position, lying in a force lock against a rear end of a respective one of said propellant igniters disposed in said cartridge chamber.
Claim 9
Dependent Claim
220 words
In a gun having a breech end, an arrangement comprising: a wedge-type breechblock disposed at the breech end of the gun; a cartridge chamber having a length L1 in a said wedge-type breechblock for accommodating propellant igniters; a propellant igniter magazine disposed adjacent said wedge-type breechblock and including a guide chute and individual ones of said propellant igniters lined up in a row in said guide chute, said individual propellant igniters each being partially encased by an exterior casing and having a length L2 which is longer than the length L1 of said cartridge chamber so that when one of said propellant igniter is loaded in said cartridge chamber in a firing position, a rear portion of said propellant igniter remains within said casing, and each said casing has an annular groove; loading means for loading one of said propellant igniters into said cartridge chamber from said magazine, said loading means including an engaging lever having a front, spring tensioned portion which is pivotably fastened to said breechblock and which engages in said groove of a respective said casing in order to load or extract the respective said propellant igniter into and out of said cartridge chamber; and a firing mechanism operatively disposed at said wedge-type breechblock for detonating a respective one of said propellant igniters in said cartridge chamber.
Claim 10
Dependent Claim
220 words
In a gun having a breech end, an arrangement comprising: a wedge-type breechblock disposed at the breech end of the gun; a cartridge chamber having a length L1 in a said wedge-type breechblock for accommodating propellant igniters; a propellant igniter magazine disposed adjacent said wedge-type breechblock and including a guide chute and individual ones of said propellant igniters lined up in a row in said guide chute, said individual propellant igniters each being partially encased by an exterior casing and having a length L2 which is longer than the length L1 of said cartridge chamber so that when one of said propellant igniter is loaded in said cartridge chamber in a firing position, a rear portion of said propellant igniter remains within said casing, and each said casing has an annular groove; loading means for loading one of said propellant igniters into said cartridge chamber from said magazine, said loading means including an engaging lever having a front, spring tensioned portion which is pivotably fastened to said breechblock and which engages in said groove of a respective said casing in order to load or extract the respective said propellant igniter into and out of said cartridge chamber; and a firing mechanism operatively disposed at said wedge-type breechblock for detonating a respective one of said propellant igniters in said cartridge chamber.
Claim 11
Dependent Claim
72 words
The arrangement of claim 8, wherein said casing of each said propellant igniter has a length L3 which is less than the length L2 of the propellant igniter, and said casing encloses only the rear end of the propellant igniter in a form locking manner so that, in order to fire said propellant igniter, said propellant igniter along with its casing, is pushed for loading said propellant igniter into said cartridge chamber.
Claim 12
Dependent Claim
225 words
In a gun having a breech end, an arrangement comprising: a wedge-type breechblock disposed at the breech end of the gun; a cartridge chamber having a length L1 in said wedge-type breechblock for accommodating propellant igniters; a propellant igniter magazine disposed adjacent said wedge-type breechblock and including a guide chute and individual ones of said propellant igniters lined up in a row in said guide chute, said individual propellant igniters each being at least partially encased by an exterior casing and having a length L2 which is longer than the length L1 of said cartridge chamber so that when a propellant igniter is loaded in said cartridge chamber in a firing position, a rear portion of said propellant igniter remains within said casing, and wherein chain studs are provided and connect said casings with one another, and said casings each having a length which is approximately the same length as that of said propellant igniters, having a slot-shaped opening parallel to a longitudinal axis of said casing, and includes, on their side facing the wedge-type breechblock, means for centering the propellant igniter disposed in the respective said casing; loading means for loading one of said propellant igniters into said cartridge chamber from said magazine; and a firing mechanism operatively disposed at said wedge-type breechblock for detonating one of said propellant igniters in said cartridge chamber.
Claim 13
Dependent Claim
225 words
In a gun having a breech end, an arrangement comprising: a wedge-type breechblock disposed at the breech end of the gun; a cartridge chamber having a length L1 in said wedge-type breechblock for accommodating propellant igniters; a propellant igniter magazine disposed adjacent said wedge-type breechblock and including a guide chute and individual ones of said propellant igniters lined up in a row in said guide chute, said individual propellant igniters each being at least partially encased by an exterior casing and having a length L2 which is longer than the length L1 of said cartridge chamber so that when a propellant igniter is loaded in said cartridge chamber in a firing position, a rear portion of said propellant igniter remains within said casing, and wherein chain studs are provided and connect said casings with one another, and said casings each having a length which is approximately the same length as that of said propellant igniters, having a slot-shaped opening parallel to a longitudinal axis of said casing, and includes, on their side facing the wedge-type breechblock, means for centering the propellant igniter disposed in the respective said casing; loading means for loading one of said propellant igniters into said cartridge chamber from said magazine; and a firing mechanism operatively disposed at said wedge-type breechblock for detonating one of said propellant igniters in said cartridge chamber.
Claim 14
Dependent Claim
82 words
The arrangement of claim 10, wherein said loading means includes an engaging lever having a front, spring tensioned portion pivotably fastened to said breechblock for engaging and pushing the propellant igniters into and out of said cartridge chamber, wherein the front portion of said engaging lever is shaped to extend through the slot-shaped openings and grip around a bottom portion of the propellant igniter in order to load and remove the respective propellant igniter into and out of said cartridge chamber, respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-25 | 1998-01-24 | 1998-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-25 | 2002-01-24 | 2002-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-25 | 2006-01-24 | 2006-07-26 | $7700.00 | Window Closed / Lapsed |