Patent US3089272A successfully refreshed from Google Patents.
US3089272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking type safety breech plug for firearms
Assignee: Individual
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Filing: 1961-07-31
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Granted: 1963-05-14
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Don E Mckinlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:39
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A LOCKING TYPE SAFETY BREECH PLUG FOR FIREARMS, SAID PLUG COMPRISING AN ELONGATED BODY GENERALLY RECTANGULAR IN CROSS SECTION AND OF A SIZE TO BE INSERTED INTO THE RECEIVER RECESS OF A FIREARM THROUGH THE SHELL EJECTION OPENING, AN INTERCHANGEABLE ADAPTER BLOCK REMOVABLY SECURED TO THE REAR END OF SAID BODY, SAID BLOCK HAVING A REARWARDLY EXTENDING CYLINDRICAL PROJECTION FOR INSERTION IN AN OPENING IN THE REAR END OF THE RECEIVER RECESS, AN AXIAL BORE IN SAID BODY AT THE FORWARD END, A TRANSVERSE BORE IN SAID BODY INTERSECTING SAID AXIAL BORE, A PLUNGER SLIDABLY RECEIVED IN SAID AXIAL BORE, A CYLINDRICAL NOSE PORTION ON THE FORWARD END OF SAID PLUNGER FOR INSERTION INTO THE CHAMBER OF A FIREARM, THE FORWARD END OF SAID NOSE PORTION BEING BEVELED TO FACILITATE INSERTION OF SAID PLUG INTO THE RECEIVER RECESS, A TRANSVERSE ARM AT THE REAR END OF SAID NOSE PORTION EXTENDING OUTWARDLY OF SAID BODY, A REARWARDLY EXTENDING EAR ON SAID ARM OVERLAPPING SAID BODY, A NOTCH IN SAID PLUNGER ADJACENT THE REAR END, A
Claim 2
Dependent Claim
174 words
A LOCKING TYPE SAFETY BREECH PLUG FOR FIREARMS, SAID PLUG COMPRISING AN ELONGATED BODY GENERALLY RECTANGULAR IN CROSS SECTION AND OF A SIZE TO BE INSERTED INTO THE RECEIVER RECESS OF A FIREARM THROUGH THE SHELL EJECTION OPENING, AN INTERCHANGEABLE ADAPTER BLOCK REMOVABLY SECURED TO THE REAR END OF SAID BODY, SAID BLOCK HAVING A REARWARDLY EXTENDING CYLINDRICAL PROJECTION FOR INSERTION IN AN OPENING IN THE REAR END OF THE RECEIVER RECESS, AN AXIAL BORE IN SAID BODY AT THE FORWARD END, A TRANSVERSE BORE IN SAID BODY INTERSECTING SAID AXIAL BORE, A PLUNGER SLIDABLY RECEIVED IN SAID AXIAL BORE, A CYLINDRICAL NOSE PORTION ON THE FORWARD END OF SAID PLUNGER FOR INSERTION INTO THE CHAMBER OF A FIREARM, THE FORWARD END OF SAID NOSE PORTION BEING BEVELED TO FACILITATE INSERTION OF SAID PLUG INTO THE RECEIVER RECESS, A TRANSVERSE ARM AT THE REAR END OF SAID NOSE PORTION EXTENDING OUTWARDLY OF SAID BODY, A REARWARDLY EXTENDING EAR ON SAID ARM OVERLAPPING SAID BODY, A NOTCH IN SAID PLUNGER ADJACENT THE REAR END, A
References Cited (Backward Citations)
US3018576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |