Patent ID: 11885318
Assignee: WENZHOU UNIVERSITY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. The two-dimensional motor combination piston pump according to claim 1, wherein the pump body defines four annular grooves in a circumferential direction, the four annular grooves are symmetrical about a middle face, the four annular grooves are a first annular groove, a second annular groove, a third annular groove, and a fourth annular groove;
four evenly distributed through holes are defined between the first annular groove and the second annular groove, each of the four through holes occupies an angle of 45° in circumferential width;
a set of two opposite through holes of the four through holes serve as a first through hole and communicate with the first annular groove, another set of two opposite through holes of the four through holes serve as a second through hole and communicate with the second annular groove;
another four evenly distributed through holes are defined between the third annular groove and the fourth annular groove, each of the another four through holes occupies an angle of 45° in circumferential width; a set of two opposite through holes of the another four through holes serve as a third through hole and communicate with the third annular groove, and another set of two opposite through holes of the another four through holes serves as a fourth through hole and communicate with the fourth annular groove.