Automatic airing device

The utility model discloses an automatic airing device which comprises a first telescopic rod arranged on a first disc; a first winding and unwinding rope extends out of the first winding and unwinding device; the second disc is positioned above the first disc; the main shaft is connected with the s...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HU LIYUAN, HU YONGDA
Format: Patent
Sprache:chi ; eng
Schlagworte:
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