Special-shaped ratchet wheel, length adjusting device and head-mounted equipment

The utility model discloses a special-shaped ratchet wheel, a length adjusting device and head-mounted equipment. The head-mounted equipment comprises a length adjusting device, the length adjusting device comprises a special-shaped ratchet wheel, the special-shaped ratchet wheel comprises an inner...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	FAN YAHUA, LI DONG, LI SONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS STANDS OR SUPPORTS THERMAL INSULATION IN GENERAL WEAPONS
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