Patent ID: 7811079

Claim:
Mold ( 1 ) for a blow molding machine for manufacturing containers ( 2 ) from parisons ( 3 ), said mold ( 1 ) comprising a lateral wall ( 4 ) and a mold bottom ( 7 ) together defining a cavity ( 8 ) for receiving a parison ( 3 ), said cavity ( 8 ) being generally symmetrical with respect to a main axis ( 10 ), said mold bottom ( 7 ) being provided with a gas conduit ( 12 ) opening into the cavity ( 8 ) for injecting into the same a pressurized gas in order to facilitate withdrawing of the blow molded container ( 2 ), wherein the mold ( 1 ) further comprises a groove ( 16 ) provided on an internal face ( 15 ) of the mold bottom ( 7 ), said groove ( 16 ) extending along a closed contour around the main axis ( 10 ), and wherein said conduit ( 12 ) opens into said groove ( 16 ).