| 摘要 |
1280140 Springs ALFRED TEVES GmbH 20 Nov 1969 [17 Jan 1969] 36833/71 Divided out of 1,272,855 Heading F2S [Also in Division F1] In a rotary pump a vane is loaded by fluid pressure in a chamber 41 and by a leaf spring 42, which has its ends engaging with a groove 43 in the vane and a blind bore 44. To minimize fluid displacement and equalize pressures the spring may be perforated. Said spring may be replaced by either a spiral spring 51 with a pin 53 at one end lodged in a bore 54 and its other end in a groove 52 in the vane or coiled springs 60 joined at their ends by a pin located in the bore 54 and a tube 69, which engages with the groove in the vane. |
