FIELD: mechanical engineering.
SUBSTANCE: charging hatch is defined by round portion 5 defining bottom and part 4 defining side wall. Round portion 5 is composed of viewing glass 10 with inner surface 12 and edge region 14. Portion 4 of bowl narrowing toward bottom of portion 5 is formed from rigid synthetic material. Viewing glass 10 is made curved along the entire length of edge region 14 defining side wall so that edge region 14 of round portion 5 defining bottom forms rounded glass protrusion 16. Viewing glass 10 includes inclined annular connecting portion 6 extending along outer edge of glass protrusion 16 and inclined relative to inner surface 12 of round portion 5. Upper end 18 is tightly engaged with inner end 20 of portion 4 defining side wall.
EFFECT: simplified construction, reliable sealing and easy maintenance of charging hatch.
6 cl, 3 dwg
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