Delay unit for a projectile
US11598619B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2019 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Dec 31, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C15/005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of delaying a mechanism in a firearm and a delay unit for a projectile comprising i) a first and a second pressure chamber (3a, 3b) arranged to receive combustion gases in a firearm via at least one inlet (1a, 1b) arranged to each of said first and second pressure chambers (3a, 3b) following firing of a projectile ii) at least one outlet for transferring the combustion gases (4a, 4b), arranged to each of said first and second pressure chambers (3a, 3b), to a piston chamber in which a displaceable piston (6) is arranged dividing the piston chamber into a compartment (5b) having a volume V1 upstream the piston (6) and a compartment (5a) having a volume V2 downstream the piston (6), wherein said at least one outlet (4a, 4b) from the first and second pressure chambers (3a, 3b) are arranged to transfer said combustion gases to said compartments (5a, b) of said piston chamber to provide an overall pressure difference between compartments (5a) and (5b) pressing the piston (6) at an initial idle position downstream whereby the volume V2 of compartment (5a) is reduced and whereby the piston (6) being pressed downstream towards an end position actuates a fun…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.