| 摘要 |
<p>1305307 Feeding record tapes RCA CORPORATION 30 April 1970 [6 May 1969] 20770/70 Heading G5R Air inlets 45, 46, 47 produce air bearings 54, 56, 58 to reduce stiction between a tape 10 and the walls of a vacuum buffer column 20, the flow of air from outside into the mouth of the column 20 being restricted by a member 44. The column 20 may be tapered, Fig. 2b (not shown), or stepped.</p> |
