PUMP HEAD AND VALVE STEM ASSEMBLY
An apparatus comprising a valve stem. The valve stem assembly can be part of a rim or inner tube. The valve stem assembly can include a valve core body and a valve stem. The valve core body can be sealed to the valve stem by a valve core body seal. The valve core body can include a spring-loaded pintle that can be configured to open and close when a pump head is attached. The valve core body can include a groove configured to retain a locking device of a pump head. The sides of the groove can be eased, for example, chamfered or filleted. The tip of the valve core body can be eased, for example, chamfered or filleted.
1 . A kit, comprising:
a valve core body of a bicycle tire tube including:
a spring-loaded pintle that is configured to open when a pump head is attached;
at least one of a chamfered or filleted tip; and
a groove configured to retain a locking device of the pump head;
the pump head including:
a lower body including holes and a chamber for receiving at least a portion of the valve core body;
balls located in the holes; and
an actuator sleeve for selectively trapping the balls against the groove and releasing the balls from the groove.
2 . The kit of claim 1 , wherein the pintle includes a seal.
3 . The kit of claim 1 , wherein the pump head further includes a head pintle for actuating the pintle of the valve core body.
4 . The kit of claim 1 , wherein the pump head further includes a preload bushing configured to preload the pump head from the valve core body.