Patent ID: 8186373
Filing Date: 2012-05-29
Classification: F04B,Y10T

Abstract:
1. An inflation device, comprising: a hollow central tube including a reception end at a first end of the central tube and a connection portion at a second end of the central tube, wherein a valve mouth is disposed in the reception end, a flange extends radially outward from the connection portion, a first O-ring is located between the flange and the reception end, a first groove is defined on an outside of the connection portion, a second O-ring is engaged with the first groove, and threads are defined on an outer periphery of a distal end of the connection portion; a first mounting unit having a first casing and a locking ring, wherein a first space is defined in the first casing, the reception end of the central tube is received in the first space, a first threaded hole is defined in an inner periphery of the first casing and disposed beside the first space, the locking ring has an opening, the central tube extends through the opening, the locking ring is connected with the first casing so as to enclose the reception end of the central tube, the flange and the first O-ring, the flange is pressed against the opening of the locking ring, the first threaded hole is adapted to be connected with an American style tire valve, and the first mounting unit is rotatable and adapted to move the American style tire valve into the first mounting unit; and a second mounting unit having inner threads and a second threaded hole in an inner periphery thereof, wherein a second space is defined beside the inner threads, a second groove is defined beside the second threaded hole, the inner threads are threadedly connected with the threads on the connection portion, the second space accommodates the second O-ring in the first groove, a third O-ring is engaged with the second groove, the second threaded hole is adapted to be connected with a French style tire valve, and the second mounting unit is rotatable and adapted to move the French style tire valve into the second mounting unit; wherein the inner threads of the second mounting unit is glued to the threads of the central tube so that the second mounting unit is co-rotated with the central tube and the first mounting unit is rotatable relative to the reception end of the central tube.