Automatic air sport gun
US6497229B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 2001 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41B11/721
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
It is possible, in an automatic air gun, to reduce a piston block's size and effectively use a compressed gas' pressure. A change valve and a open-close valve are positioned below a cylinder block. A change valve closing portion is exposed in a change valve gas chamber. The change valve is located so only a rod portion is positioned in the change valve gas chamber. When the compressed gas is supplied to a bullet discharge ventilating opening side, through the change valve gas chamber, the closing portion opens a bullet discharge air-supply opening thereby allowing the compressed gas to flow to the bullet discharge air-supply opening. When the compressed gas is supplied to a blow-back ventilating opening, the closing portion makes a blow-back air-supply opening change to the opening state; the change valve rod prevents supply of the compressed gas to the change valve gas chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.