Spray freezer tunnel

Claim 1

IN A FOOD FREEZING APPARATUS, THE COMBINATION OF AN ELONGATED HOUSING FORMING A TUNNEL, A LONGITUDINAL PARTITION PROVIDED IN SAID TUNNEL AND SEPARATING THE SAME INTO AN UPPER COMPARTMENT AND A LOWER COMPARTMENT, A FOOD CONVEYOR PASSING THROUGH SAID TUNNEL FROM ONE END THEREOF TO THE OTHER, SAID CONVEYOR HAVING A LOADING END, A DISCHARGE END, AN UPPER FOOD CONVEYING RUN PASSING THROUGH SAID UPPER COMPARTMENT ALONG SAIDS PARTITION AND A LOWER RETURN RUN PASSING THROUGH SAID LOWER COMPARTMENT, A PLURALITY OF TRANSVERSELY EXTENDING ROTATABLE GUIDING ROLLS PROVIDED AT LONGITUDINALLY SPACED POINTS IN SAID LOWER COMPARTMENT, THE LOWER RUN OF SAID CONVEYOR PASSING IN A CATENARY PATH OVER SAID GUIDING ROLLS WHEREBY TO MAINTAIN APPROPRIATE TENSION ON THE UPPER RUN OF THE CONVEYOR PASSING ALONG SAID PARTITION, AND MEANS FOR DISCHARGING VOLATILIZABLE LIQUEFIED GAS INTO SAID UPPER COMPARTMENT, SAID HOUSING FORMING SAID TUNNEL COMPRISING A PLURALITY OF MODULAR SECTIONS ASSEMBLED IN END-TO-END RELATIONSHIP, SAID TUNNEL PARTITION COMPRISING A PLURALITY OF PLANAR PARTITION MEMBERS EMBODIED IN THE RESPECTIVE TUNNEL SECTIONS, AND LONGITUDINALLY EXTENDING WEAR STRIPS MOUNTED ON THE UPPER SURFACE OF EACH PARTITION MEMBER, THE WEAR STRIPS ON EACH PARTITION MEMBER BEING LATERALLY OFFSET FROM AND LONGITUDINALLY OVERLAPPING THE WEAR STRIPS ON THE NEXT ADJACENT PARTITION MEMBER, THE UPPER RUN OF SAID CONVEYOR RIDING ON SAID WEAR STRIPS, TOGETHER WITH FIXED FASTENER MEANS SECURING ONE END OF EACH OF SAID WEAR STRIPS AT A FIXED POINT TO ITS ASSOCIATED PARTITION MEMBER, AND SELF-ADJUSTING FASTENER MEANS SECURING THE OTHER END OF EACH WEAR STRIP TO THE PARTITION MEMBER SO AS TO PERMIT LONGITUDINAL EXPANSION AND CONTRACTION OF THE WEAR STRIP UNDER CHANGES IN TEMPERATURE INDEPENDENTLY OF THE ASSOCIATED PARTITION MEMBER.