| 摘要 |
1362296 Rotary positive-displacement machines COMMERCIAL SHEARING & STAMPING CO 9 Nov 1971 [12 Nov 1970] 51946/71 Heading F1F In a gear pump, or motor, pressure equalizing pockets on the outer sides of axially movable plates 13, 14 abutting the gears 11, 12 are separated from one another by radial seals (40... 44), Fig. 3 (not shown), in each plate, and annular members 23 adjoining bearings 16a, 16b, 17a, 17b have flanges 23a engaging with recesses 13a, 14a in the plates, said pockets communicating with the gear-tooth spaces across recessed peripheral areas (45..48) on each plate. Grooves (26), Fig. 2 (not shown), are formed on the inner side of each plate in register with the meshing teeth. In another embodiment, Figs. 7 and 8, each plate 13', 14' has seals 68.....74 on its outer side to separate the pockets from one another and passages 75 communicating with the gear-tooth spaces. Passages 76, 77 equalize pressures on opposite sides of the annular members 23' and the bearings. |
