Patent US3710490A successfully refreshed from Google Patents.
US3710490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for firearms
Assignee: Individual
•
Filing: 1970-07-20
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Granted: 1973-01-16
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Expires: 1990-07-20
Abstract
Abstract A safety device for inserting in the barrel of a firearm to prevent anyone from cocking, loading or firing the gun as long as the device is in position. The device comprises a plug which fits in each end of the barrel connected together by a flexible cable or similar member which is locked in position at the muzzle end of the gun. Both plugs are provided with vent openings to permit air circulation through the barrel when the device is installed. The plug which fits into the chamber has special radial flanges which engage the cartridge extractor and prevent the gun from being cocked. A special telescoping cable extension is provided on the muzzle end to hold the connecting cable taut while the device is being locked in the barrel.
Inventors
- 👤 E Cornett
- 👤 G Cornett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:46
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/44
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
149 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end, the device comprising: A. means closing the chamber to prevent insertion of amunition therein, B. flexible means connected to the chamber closing means and extending through the barrel to the muzzle end thereof, C. locking means engaging the flexible means at the muzzle end of the barrel to prevent withdrawal of the flexible means and the chamber closing means from the barrel; D. vent means in the chamber closing means and the locking means to permit air circulation through the interior of the gun barrel when the safety device is positioned in the barrel; and E. extension means on the muzzle end of the flexible means to hold the flexible means and the chamber closing means in position in the gun barrel while the locking means is fastened in position.
Claim 2
Dependent Claim
149 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end, the device comprising: A. means closing the chamber to prevent insertion of amunition therein, B. flexible means connected to the chamber closing means and extending through the barrel to the muzzle end thereof, C. locking means engaging the flexible means at the muzzle end of the barrel to prevent withdrawal of the flexible means and the chamber closing means from the barrel; D. vent means in the chamber closing means and the locking means to permit air circulation through the interior of the gun barrel when the safety device is positioned in the barrel; and E. extension means on the muzzle end of the flexible means to hold the flexible means and the chamber closing means in position in the gun barrel while the locking means is fastened in position.
Claim 3
Dependent Claim
24 words
A safety device as claimed in claim 1 wherein the extension means telescopes into a hollow member at the end of the flexible means.
Claim 4
Dependent Claim
16 words
A safety device as claimed in claim 2 wherein the extension means is a flexible member.
Claim 5
Dependent Claim
32 words
A safety device as claimed in claim 1 including means to adjust the length of the flexible connecting means to fit the length of the gun barrel in which it is used.
Claim 6
Dependent Claim
28 words
A safety device as claimed in claim 1 including means on the chamber closing means to prevent the gun bolt from being slid rearwardly to cock the gun.
Claim 7
Dependent Claim
145 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end thereof, the device comprising: A. a chamber plug to prevent insertion of ammunition in the chamber, B. a flexible connector running through the interior of the gun barrel and adjustably connected to the chamber plug, C. a locking assembly engaging the muzzle of the gun and retaining the flexible connector and the chamber plug in position in the barrel, the locking assembly comprising a locking plug with a non-metallic sleeve thereon which fits into the muzzle of the gun, said locking plug having a set screw which engages a groove in a core member fastened to the flexible connector; and D. vent means to permit air circulation through both the chamber plug and the locking assembly to prevent moisture from becoming trapped inside the gun barrel.
Claim 8
Dependent Claim
145 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end thereof, the device comprising: A. a chamber plug to prevent insertion of ammunition in the chamber, B. a flexible connector running through the interior of the gun barrel and adjustably connected to the chamber plug, C. a locking assembly engaging the muzzle of the gun and retaining the flexible connector and the chamber plug in position in the barrel, the locking assembly comprising a locking plug with a non-metallic sleeve thereon which fits into the muzzle of the gun, said locking plug having a set screw which engages a groove in a core member fastened to the flexible connector; and D. vent means to permit air circulation through both the chamber plug and the locking assembly to prevent moisture from becoming trapped inside the gun barrel.
Claim 9
Dependent Claim
38 words
A safety device as claimed in claim 6 wherein the chamber plug has radial flanges which engage a cartridge extractor mechanism on the bolt of the gun to prevent the bolt from being moved to a cocked position.
Claim 10
Dependent Claim
18 words
A safety device as claimed in claim 6 wherein a flexible extension member telescopes into the core member.
Claim 11
Dependent Claim
28 words
A safety device as claimed in claim 6 wherein the non-metallic sleeve extends over a portion of the outer surface of the gun barrel adjacent the muzzle end.
Claim 12
Dependent Claim
38 words
A safety device as claimed in claim 6 wherein the set screw in the locking plug has a special head which fits a specially contoured socket in the end of a key for locking and unlocking the device.
Claim 13
Dependent Claim
36 words
A safety device as claimed in claim 6 wherein at least a portion of the locking assembly is color coded to indicate the gage of the firearm with which the device is designed to be used.
Claim 14
Dependent Claim
151 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end thereof, the device comprising: A. a chamber plug having a plurality of longitudinal vents therethrough, B. means adjustable connecting said chamber plug to a flexible cable extending through the interior of the barrel and running the length thereof, C. a locking means engaging the cable at the muzzle end of the barrel, said locking means extending for at least a short distance into the muzzle of the gun; D. a plurality of grooves running longitudinally through the locking means to provide air circulation through the barrel in cooperation with the vents through the chamber plug; and E. a flexible telescoping extension on the end of the flexible cable at the muzzle for holding the cable and chamber plug in position in the barrel while the locking device is locked on the cable.
Claim 15
Dependent Claim
151 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end thereof, the device comprising: A. a chamber plug having a plurality of longitudinal vents therethrough, B. means adjustable connecting said chamber plug to a flexible cable extending through the interior of the barrel and running the length thereof, C. a locking means engaging the cable at the muzzle end of the barrel, said locking means extending for at least a short distance into the muzzle of the gun; D. a plurality of grooves running longitudinally through the locking means to provide air circulation through the barrel in cooperation with the vents through the chamber plug; and E. a flexible telescoping extension on the end of the flexible cable at the muzzle for holding the cable and chamber plug in position in the barrel while the locking device is locked on the cable.
Claim 16
Dependent Claim
105 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end, the device comprising: A. a chamber plug to prevent insertion of amunition in the chamber; B. flexible means connected to the chamber plug and extending through the barrel to the muzzle end thereof, C. locking means engaging the flexible means at the muzzle end of the barrel to prevent withdrawal of the flexible means and the chamber plug from the barrel, and D. the chamber plug having means to selectively regulate cocking of the firearm while the safety device is locked in position in the barrel.
Claim 17
Dependent Claim
105 words
A safety device for firearms having a barrel with a muzzle end and a chamber in the opposite end, the device comprising: A. a chamber plug to prevent insertion of amunition in the chamber; B. flexible means connected to the chamber plug and extending through the barrel to the muzzle end thereof, C. locking means engaging the flexible means at the muzzle end of the barrel to prevent withdrawal of the flexible means and the chamber plug from the barrel, and D. the chamber plug having means to selectively regulate cocking of the firearm while the safety device is locked in position in the barrel.
Claim 18
Dependent Claim
71 words
A safety device as claimed in claim 13 wherein the the means to selectively regulate cocking is a pair of radially outwardly extending flanges on the chamber plug which engage a cartridge extractor mechanism when the chamber plug is in one relative circumferential position with respect to the barrel, but do not engage the cartridge extractor when the chamber plug is in another relative circumferential position with respect to the barrel.
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US2887807A
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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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |