Safety device including chamber probe
US4709496A · kind A · utility
Inventor
Key dates
| Filing date | Dec 18, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Dec 18, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A17/44
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A safety device for use with a repeating firearm having a magazine well for holding a box-like removable magazine, to prevent the firearm from being fired unintentionally and for providing an indication visible at some distance that the firearm is in a safe condition. A main body of the device corresponds in size with the magazine for the weapon and includes a top portion which extends into the space left open between the breech and the face of the bolt of the weapon when the bolt is withdrawn. A plunger slidably disposed within the main body is connected with a movable chamber probe which would be prevented from entering the chamber by a round of ammunition, and which prevents the plunger from being moved to a position latching the device in the firearm unless the probe is able to enter the firing chamber. Visible exposure of more than a predetermined portion of the safety device indicates that the safety device is not properly installed in the weapon and that the weapon is therefore not to be considered safe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.