Patent ID: 6863526
Filing Date: 2005-03-08
Classification: F21L,F23D

Abstract:
1. A lantern having a mantle, a chimney, an ignition bowl, and a fuel system with a pump subassembly, the pump subassembly adapted to facilitate the forming of a tight seal in the system during pumping, the pump subassembly including a beveled seat having an interior end with a cylindrical configuration constituting an interior guard with a first O-ring on the beveled seat adjacent to the interior guard, the beveled seat having an exterior end with a cylindrical configuration constituting an exterior guard with a second O-ring on the seat adjacent to the exterior guard, and an intermediate guard on the seat between the first O-ring and the second O-ring, the first and second O-rings being fabricated of an elastomeric material with an essentially common diameter, the interior and intermediate guards being spaced an essentially common first distance from the first O-ring and the exterior and intermediate guards being spaced an essentially common second distance from the second O-ring and with the second distance being less than the first distance.