| 摘要 |
955,057. Bearings. BENDIX CORPORATION. Nov. 12, 1962 [Nov. 13, 1961], No. 42715/62. Heading F2A. [Also in Division G1] A bearing assembly for a gyroscope has a fluid bearing which operates during normal conditions and a ball-bearing, serving as a combined radial and thrust bearing, which comes into operation when the fluid bearing becomes inoperative. The fluid bearing comprises two co-operating cup-shaped components 70, 110 which are carried by an extension 46 of a head 42 and by a gimbal 24 respectively. The component 70 consists of a part 72, Fig. 2, which, having external screw-threads at 84, is secured to a part 74; Fig. 4, having internal screw-threads at 102. The component 110 is secured to the gimbal 24 by screws 111 and is located by a pin 115 thereof which is received by a recess 116 in the gimbal. The ball-bearing 60 has its inner race 62 mounted on the extension 46 of the head 42 and its outer race 64 attached to the component 70, thus the latter is connected to the extension 46. In use, compressed air is supplied by a conduit 54 to a bore 52 in the extension 46 of the head 42 and is conveyed to a chamber 106 in the component 70 from where it is passed through spaced openings 92, 98 therein, into a space 126 between the components 70 and 110. The air is allowed to escape through the annular space between the components 70 and 110 and through openings 120 in the component 110. A quantity of air passes through the ballbearings 60 and serves to eliminate radial and axial play. In a modification, the conduit 54 is out of alignment with the axis of the gimbal 24 and the bore 52 does not pass through the head 42. |
