| 摘要 |
A pocketed spring assembly (12, 12a, 12', 12d) comprises a plurality of parallel strings (26, 27, 26a, 27a, 26d, 27d) of individually pocketed springs (28, 29) of different heights. Each string is joined to an adjacent string. Each string has first and second opposed plies of fabric (47, 49) and a plurality of pockets (34, 35, 34d, 35d) formed along a length of the string by transverse seams (52, 52d) joining the plies. An upper end (70, 70d) of each transverse seam (52, 52d) is below the upper surface (60) of the string so as to partially separate adjacent pockets within a string of springs when the spring is relaxed. The strings of springs (26, 27, 26a, 27a, 26d, 27d) have ventilation openings (80) to increase airflow. |
