PTC fitting cartridge

摘要

A Push To Connect (PTC) fitting cartridge for connecting to a pneumatic device, such as, an air brake or a height control valve, the PTC fitting cartridge including at least one protrusion positioned on an outer surface of the PTC fitting cartridge, which is provided to interact with an undercut positioned on an inner surface of a port. The undercut interacts with the protrusion to substantially eliminate stress on the surrounding material to reduce the chance of fraction thereof.

主权项

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.