FIELD: medical engineering. SUBSTANCE: device includes mounting plate positioned on chair backrest, holder housing rod and spring and welded to mounting plate, with spring resting on holder flange, washer fitted on rod end portion and nut screwed on it. Device further includes movably attached envelopes on rod end portion between nuts. Shanks of envelopes are drawn off by spring whose ends are inserted into openings at ends of shanks. EFFECT: greater comfort and stepwise extension. 3 dwg
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Authors
Dates
1995-01-20—Published
1992-10-05—Filed