Chair back swivel mechanism
作者： Khalid Masoud , Andrew Hector
DOI:
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摘要: A chair includes a backrest swivel mechanism that is configured to permit the about vertical axis preselected range of motion. The may be swivel, or rotate, defined by an element located adjacent rearward central location below seat and rear chair. lock can selectively engaged unlock swiveling so when in locked state, cannot unlocked swivel. In some embodiments, motion with predefined range, such as +/−10° +/−20° rotation relative position backrest.
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