F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
F21V21/14—Adjustable mountings
F21V21/16—Adjustable mountings using wires or cords
F21V21/18—Adjustable mountings using wires or cords operated by springs
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Engineering & Computer Science
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General Engineering & Computer Science
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Storage Of Web-Like Or Filamentary Materials
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Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles
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