Water load container device for a microwave heat applicator

Claim 1

A fluid dummy load container device for being readily removably inserted into a portion of a waveguide member of a microwave heat applicator device for heat sealing thermoplastic food containing packagings, said waveguide member having wall portions defining a circular opening extending into an interior waveguide cavity, comprising: a container means (51) being integrally formed to have a unitary structure and having a downwardly extending circular fluid receptacle member (55) and a circular upper ledge member (56), said receptacle member having a contoured interior wall surface defining a cavity (57, 91) with a varying diameter from a top end to a bottom end of said cavity, said receptacle member dimensioned for being received in the circular opening (38) of the waveguide (12), said container mean for being cantilever mounted to the waveguide with said receptacle member for projecting within the interior waveguide cavity (46) with said ledge member extending beyond and atop the exterior wall portions of the waveguide; and cover means (52) formed of a suitable metal having a generally disk shape and dimensioned for being affixed to the waveguide and atop said upper ledge member, said cover means having a circular downwardly projecting ledge member (59) dimensioned for being received within a portion of said cavity, said downwardly projecting ledge member having a circumferential O-ring notch (60) mountingly receiving an O-ring gasket means (53), said O-ring gasket means being configured for providing a fluid seal between said container means and said cover means, said cover means having a fluid inlet port (61) and a fluid outlet port (62) to enable input and removal of a fluid load within said cavity; whereby a graduated fluid load effect is provided to a portion of the microwave energy within a portion of the waveguide.