Patent US1199761A successfully refreshed from Google Patents.
US3204558A
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Wear reduction additives
Assignee: Wegematic Corp
•
Filing: 1961-11-20
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Granted: 1965-09-07
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jacobson David Esriel
- 👤 Ek Stig Yngve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:51
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/24; Y; Y10; Y10S; Y10S102/00; Y10S102/704
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
FOR USE IN A GUN BARREL, IN COMBINATION: A SINGLE PROJECTILE; AN EXPLOSIVE CHARGE WHICH WHEN FIRED PRODUCES HOT PROPELLANT GASES FOR PROPELLING THE PROJECTILE THROUGH THE GUN BARREL; AND AN ADDITIVE FOR REDUCING GUN BARREL WEAR RESULTING FROM THE FIRING OF SUCH PROJECTILE COMPRISING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ZINC AND ZINC COMPOUNDS PRESENT IN AN AMOUNT BETWEEN 0.05 AND 20% BY WEIGHT OF THE PROPELLANT CHARGE TO PROVIDE ON THE INSIDE SURFACE OF THE GUN BARREL A TEMPORARY PROTECTION HAVING A HIGH RESISTANCE TO TEMPERATURES AND WEAR.
Claim 2
Dependent Claim
92 words
FOR USE IN A GUN BARREL, IN COMBINATION: A SINGLE PROJECTILE; AN EXPLOSIVE CHARGE WHICH WHEN FIRED PRODUCES HOT PROPELLANT GASES FOR PROPELLING THE PROJECTILE THROUGH THE GUN BARREL; AND AN ADDITIVE FOR REDUCING GUN BARREL WEAR RESULTING FROM THE FIRING OF SUCH PROJECTILE COMPRISING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ZINC AND ZINC COMPOUNDS PRESENT IN AN AMOUNT BETWEEN 0.05 AND 20% BY WEIGHT OF THE PROPELLANT CHARGE TO PROVIDE ON THE INSIDE SURFACE OF THE GUN BARREL A TEMPORARY PROTECTION HAVING A HIGH RESISTANCE TO TEMPERATURES AND WEAR.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |