Patent ID: 7445533

Claim:
An injection apparatus for inflating or deflating an inflatable object comprising: (a) a housing having a top wall and an outer wall defining a center bore; (b) an inner wall within the outer wall of the housing and extending across the center bore of the housing; (c) a post slidably mounted in the inner wall; (d) an inflation needle mounted upon an end of the post; (e) a gas transport hose extending through the post and connected to the inflation needle to provide a gas supply to the inflatable object; (f) a piston extending from the post across the center bore of the housing between a top wall and the inner wall so as to define a sealed chamber between the piston and the inner wall of the injection apparatus, the piston being slidably disposed against the outer wall and top wall; and (g) a retraction hose attached to the post to provide gas to the chamber between the piston and the inner wall, wherein when the gas is supplied to the retraction hose, the pressure in the chamber forces the housing down against the inflatable object so as to remove the inflation needle from the inflatable object.