| 摘要 |
PCT No. PCT/US82/01215 Sec. 371 Date Sep. 7, 1982 Sec. 102(e) Date Sep. 7, 1982 PCT Filed Sep. 7, 1982 PCT Pub. No. WO84/01004 PCT Pub. Date Mar. 15, 1984.A helical, positive displacement, external gear pump having a gear contact ratio greater than unity wherein the space between two meshing gear teeth registers with the cutoff edge of the outlet port at one end of the space and as it registers with the inlet edge of the inlet port at the opposite end of the space thereby eliminates the need for providing end plate recesses.
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