US3359856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun barrel with variable capacity chamber
Assignee: Rheinmetall Industrie AG
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Filing: 1966-05-05
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Granted: 1967-12-26
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Grosschopf Herbert
- 👤 Zehfeld Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:06
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; F; F41; F41A; F41A21/00; F41A21/02; F41A21/04; F41A21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A GUN BARREL COMPRISING IN COMBINATION AN OUTER SUPPORTING BARREL MEMBER, A BORE TUBE POSITIONED IN THE BARREL MEMBER AND LONGITUDINALLY DISPLACEABLE RELATIVELY THERETO IN SUCH MANNER AS TO VARY THE CAPACITY OF THE CHAMBER OF THE WEAPONS, AND MEANS FOR ADJUSTABLY HOLDING THE BORETUBE IN A REQUIRED POSITION IN THE BARREL MEMBER, SAID BORE TUBE HAVING AN END INSIDE SAID BARREL MEMBER AND A TAPERING BORE PORTION AT SAID END, SAID TAPER BORE INCREASING IN SIZE FROM THE INTERNAL DIAMETER OF SAID BORE TUBE TO SUBSTANTIALLY THE EXTERNAL DIAMETER OF THE LATTER AND FORMING A VARIABLE POSITION PAR TOF SAID CHAMBER.
Claim 2
Dependent Claim
102 words
A GUN BARREL COMPRISING IN COMBINATION AN OUTER SUPPORTING BARREL MEMBER, A BORE TUBE POSITIONED IN THE BARREL MEMBER AND LONGITUDINALLY DISPLACEABLE RELATIVELY THERETO IN SUCH MANNER AS TO VARY THE CAPACITY OF THE CHAMBER OF THE WEAPONS, AND MEANS FOR ADJUSTABLY HOLDING THE BORETUBE IN A REQUIRED POSITION IN THE BARREL MEMBER, SAID BORE TUBE HAVING AN END INSIDE SAID BARREL MEMBER AND A TAPERING BORE PORTION AT SAID END, SAID TAPER BORE INCREASING IN SIZE FROM THE INTERNAL DIAMETER OF SAID BORE TUBE TO SUBSTANTIALLY THE EXTERNAL DIAMETER OF THE LATTER AND FORMING A VARIABLE POSITION PAR TOF SAID CHAMBER.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |