Patent ID: 9746280
Date: 2017-08-29
CPC Classifications: F41B

Claim:
1. A pressure regulator comprising: a hollow first housing including a hollow projection on a first end surface, an axial channel through the projection and communicating with inside of the first housing, and a connector on a second end surface; an output pressure gauge disposed on the first housing and communicating with inside of the first housing; a check valve disposed on the first housing and communicating with inside of the first housing; a pressure regulation assembly including a sleeve releasably fastened in the channel and having an axial tunnel communicating with inside of the first housing, a biasing member disposed in the tunnel, and a hub disposed on an end of the biasing member; a hollow second housing including an internal space with the projection disposed therein, and a plurality of holes on an end, each of the holes having overlapping circular portions and of larger and smaller sizes; a plurality of fasteners driven through the overlapping circular portions of smaller size of the holes into the first housing to secure the second housing, the pressure regulation assembly, and the first housing together; a switch disposed on the first housing and communicating with inside of the first housing; and a pressure relief valve disposed on the first housing and communicating with inside of the first housing; wherein in an unfastened state of the second housing, the fasteners are configured to drive through the overlapping circular portions of larger size of the holes.