| 摘要 |
1,095,160. Screw-and-nut gearing. SPECIALTIES DEVELOPMENT CORPORATION. Dec. 11, 1964 [Jan. 27, 1964], No. 22411/67. Divided out of 1,091,247. Heading F2Q. A ball-threaded nut 12 has ball cross-over passages 19 for single turn threads in individual cross-over elements 18, axially spaced by spacers 22, both the elements and spacers being axially movable in an axial slot 17 in the nut. The spacers 22 may have helical ribs 24 of impregnated porous, or briquetted dry lubricating material to lubricate and/or wipe the screwthread. |
