Patent ID: 8991023
Filing Date: 2015-03-31
Classification: F16L,Y10T

Abstract:
1. A pneumatic device assembly comprising: a housing for the pneumatic device; said housing having a port located therein; a push to connect fitting cartridge receivable in said port, said push to connect fitting cartridge having a longitudinal axis; said push to connect fitting cartridge comprising plastic and including at least a first and a second protrusion located on an outer surface thereof and where the first protrusion is positioned axially apart from the second protrusion along the longitudinal axis of said push to connect fitting cartridge; said push to connect fitting cartridge comprising an O-ring positioned in a channel on the outer surface, the O-ring positioned adjacent to one of the first or second protrusions; said port having an undercut located on an inner surface thereof for interacting with at least one of the first or second protrusions to create an interlock between said push to connect fitting cartridge and said housing; wherein when said push to connect fitting cartridge is in a fully inserted position inside said port, both the first and second protrusions are axially advanced beyond said undercut and simultaneously contact the inner surface of the port and the O-ring does not pass the undercut so as to be maintained axially apart from the undercut; and said pneumatic device is selected from the group consisting of: a pneumatic brake and a pneumatic height control valve.