| 摘要 |
1,098,809. Seats. M. P. BURKE. Oct. 17, 1966, No. 46227/66. Heading A4J. A seat 12, which is mounted on a tubular column to tilt about a pivot 50, is counterbalanced by the force of a compression spring 52, exerted through a cable 54. The seat is preferably mounted to rotate about the vertical axis of thrust bearing 38, together with sleeve 34, in which spring 52 is adjustably held between blocks 56 and 58. Steel cable 54 extends over pulley 70 and along channel 74 in sleeve 34. Screwthreads 30 are provided so that, on turning the ring 32, the column is extended telescopically to vary the height of the seat. |
