Patent ID: 11879462
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. The Moineau pump-type quantitative liquid-discharging apparatus of claim 9, further comprising a coupling housing accommodating the coupling part therein, wherein:
the coupling part includes a first coupling hub, a second coupling hub, and a coupling disc disposed between the first coupling hub and the second coupling hub,
first and second coupling protruding parts are formed on side surfaces of the first and second coupling hubs which face each other, respectively, and
first and second coupling grooves, into which the first and second coupling protruding parts are inserted and by which movements of the first and second coupling protruding parts are guided, respectively, are formed at side surfaces of the coupling disc, the first and second coupling grooves being formed to extend perpendicular to each other.