Patent ID: 8360119

Claim:
A high-pressure inflation pump comprising, in combination: a head including a compartment, a passageway in communication with the compartment, and a threaded section, with the compartment located intermediate the passageway and the threaded section, with the passageway including an opening formed in an outer periphery of the head, with the threaded section adapted to engage with a threaded end of a high-pressure gas container; a nozzle mounted to the opening of the head, with the nozzle adapted to engage with a valve of a tire and to guide high-pressure gas in the high-pressure container flowing through the passageway into the tire for inflating the tire; a piercing member received in the compartment of the head, with the piercing member including a base and a piercing portion, with the base having an outer diameter larger than a diameter of the passageway, with the base abutting an intersection of the compartment and the passageway, with the piercing portion including an annular abutting shoulder, with the piercing portion adapted to pierce an end face of the threaded end of the high-pressure gas container, with the annular abutting shoulder adapted to press against the end face of the threaded end of the high-pressure gas container when the end face of the threaded end of the high-pressure gas container is pierced by the piercing portion and when the high-pressure gas container is in a non-inflating position, with the base including a hole in communication with the passageway, with the base further including an air guiding hole extending from an outer periphery of the base through the hole; and a resilient member received in the compartment, with the resilient member including a support end, a pressing end, and a chamber formed in the support end and the pressing end, with the piercing member received in the chamber with a deformation space formed between an outer periphery of the piercing member and an inner periphery of the chamber, with the inner periphery of the chamber contacting an outer periphery of the piercing portion at the pressing end by at least one first contact point, with the inner periphery of the chamber contacting the outer periphery of the base at the support end by at least one second contact point.