Patent US4023294A successfully refreshed from Google Patents.
US4023294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for firearms
Assignee: Individual
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Filing: 1976-07-19
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Granted: 1977-05-17
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Expires: 1996-07-19
Abstract
Abstract For insertion in a firearm to prevent discharge thereof, a plastic rod having longitudinal ribs fits in the barrel and extends into one of the cylinder chambers of the weapon. The outer end of the rod is recessed from the muzzle end of the barrel and is tapped and threaded. A key threads into the rod and may be pulled outwardly to remove the rod from the gun barrel.
Inventors
- 👤 Joseph P. Knopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:43
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A safety device for a firearm having a hollow barrel with a muzzle end and a firing chamber located at the opposite end of the barrel, said device comprising in combination: an elongate rod adapted to be inserted from said muzzle end into said barrel and firing chamber to grippingly engage the interior wall of said barrel, said rod being shorter in length that the combined length of said barrel and firing chamber; a tool for inserting and removing said rod from the barrel and firing chamber, said tool including a shank portion smaller in size than said barrel and of sufficient length to push said rod into said firing chamber when said shank portion is inserted into said barrel from the muzzle end; and means for coupling said shank portion of the tool with said one end of the rod within said barrel, whereby said tool may be pulled outwardly of the muzzle end of said barrel to remove said rod therefrom.
Claim 2
Dependent Claim
163 words
A safety device for a firearm having a hollow barrel with a muzzle end and a firing chamber located at the opposite end of the barrel, said device comprising in combination: an elongate rod adapted to be inserted from said muzzle end into said barrel and firing chamber to grippingly engage the interior wall of said barrel, said rod being shorter in length that the combined length of said barrel and firing chamber; a tool for inserting and removing said rod from the barrel and firing chamber, said tool including a shank portion smaller in size than said barrel and of sufficient length to push said rod into said firing chamber when said shank portion is inserted into said barrel from the muzzle end; and means for coupling said shank portion of the tool with said one end of the rod within said barrel, whereby said tool may be pulled outwardly of the muzzle end of said barrel to remove said rod therefrom.
Claim 3
Dependent Claim
45 words
The invention of claim 1, wherein said rod is of smaller diameter than said barrel and includes spaced apart ribs extending generally longitudinally along the exterior surface of said rod, said ribs grippingly engaging the interior wall of said barrel to retain said rod therein.
Claim 4
Dependent Claim
24 words
The invention of claim 2, wherein said ribs are resiliently deformable to permit said rod to be received in barrels having different bore sizes.
Claim 5
Dependent Claim
14 words
The invention of claim 2, wherein each rib is tapered outwardly from said rod.
Claim 6
Dependent Claim
21 words
The invention of claim 1, wherein said coupling means comprises a threaded connection of said tool with said one rod end.
Claim 7
Dependent Claim
21 words
The invention of claim 1, including an enlarged handle on said tool connected with said shank portion at one end thereof.
Claim 8
Dependent Claim
35 words
The invention of claim 1, wherein said one end of the rod is tapped and threaded and said shank portion of said tool has an end which is matingly threaded to provide said coupling means.
Claim 9
Dependent Claim
27 words
The invention of claim 7, including an enlarged handle of said tool connected with said shank portion at the end thereof opposite the end which is threaded.
Claim 10
Dependent Claim
48 words
The invention of claim 7, wherein said rod is of smaller diameter than said barrel and includes a plurality of spaced apart ribs extending generally longitudinally along the exterior surface of said rod, said ribs grippingly engaging the internal walls of said barrel to retain said rod therein.
Claim 11
Dependent Claim
14 words
The invention of claim 9, wherein each rib is tapered outwardly from said rod.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |