Acumulator
Igishushanyo mbonera cya horizontal kizenguruka gishingiye ku ihame ryitandukaniro muburebure bwumubare ungana wa spiral hafi ya diameter zitandukanye. Sisitemu yemerera gukusanya umubare munini wibipande, kubijyanye nigice cyigaruriwe kandi ikora muburyo bwa spiral. Byongeye kandi, iyi mashini ntabwo ikeneye imirimo idasanzwe yo kubaka kandi irashobora kwimurwa byoroshye. Igikorwa cyikora rwose cyemerera gukoresha neza inyungu zubukungu zitangwa numusaruro uhoraho.
Ubwoko bwa etage yegeranya, Horizontal spiral yegeranya hamwe na Cage yegeranya irahari kumahitamo