| 摘要 |
1,256,388. Adjustable chairs. G. H. MUNSTER (Doerner Products Co., Ltd.). Sept.25, 1969, No.47186/69. Headings A4J and A4U. The back 11, of a chair is pivoted at 23 and controlled by a torsion spring 23. The pivot 23 is carried on a frame 13 fixed to a base 12. In modifications (not shown) the seat bottom is also resiliently supported, either to tilt as a unit with the back or independently of the back. |
