Swiveling chair with electrical pass-through

A bi-plate ball bearing is configured for horizontally mounting between a base and a chair. The ball bearing has an upper plate and a lower plate defining a ball bearing race and a tension member holding the plates together disposed through a central rotational axis of the bi-plate ball bearing. The...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LUNDEEN DALE ROBERT, VETTER KAY DANIEL, DAVIS, JR. WENDELL R
Format:	Patent
Sprache:	eng
Schlagworte:	BEDS CHAIRS COFFEE MILLS DOMESTIC ARTICLES OR APPLIANCES FURNITURE HUMAN NECESSITIES SOFAS SPICE MILLS SUCTION CLEANERS IN GENERAL
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