| 摘要 |
941,317. Gyroscopic apparatus. SPERRY RAND CORPORATION. April 1,1960 [April 8, 1959], No.11532/60. Drawings to Specification. Heading G1C. A flotation liquid, for use in a liquid-floated instrument such as a gyroscope, consists wholly of polybromotrifluoroethylene, or a mixture wherein it is mixed with polychlorotrifluoroethylene with or without a polymeric thickener. The specific gravity may be between 1. 85 and 2. 5, and the vapour pressure 20 to 180 microns, at 165‹F. and the solidification point may be between -65‹ F. and 5‹ F. Specification 772, 432 is referred to. |
