Cutting chain for a hand-operated implement and a hand-operated implement

A chainsaw has a motor, a drive sprocket and optionally a nose sprocket 53 on the end of a guide bar 9. One of the sprockets has a blocking contour 55 in some recesses 71 to prevent some of the chains drive teeth 45 projecting into it but not others 47. This means that only certain chains are compat...

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Bibliographische Detailangaben
Hauptverfasser:	MATTHIAS SCHULZ, JOCHEN BUCHHOLTZ
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BROACHING COMPONENTS OR ACCESSORIES THEREFOR ENGINEERING ELEMENTS AND UNITS FILING GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS PLANING SAWING SAWS FOR WOOD OR SIMILAR MATERIAL SCRAPING SHEARING SLOTTING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING CEMENT, CLAY, OR STONE WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL WORKING STONE OR STONE-LIKE MATERIALS
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Beschreibung
Zusammenfassung:	A chainsaw has a motor, a drive sprocket and optionally a nose sprocket 53 on the end of a guide bar 9. One of the sprockets has a blocking contour 55 in some recesses 71 to prevent some of the chains drive teeth 45 projecting into it but not others 47. This means that only certain chains are compatible with certain sprockets. Ideally there is a chain tensioning device, the all recesses 70, 71 preferably span equal angles 150, 151 of the sprocket. The short and long teeth could be alternating as could the blocking contours. The chain links without the long drive teeth preferably still have projections to engage the guide bar. There are optionally no projections on some links and the blocking contour could entirely obscure the recess matching it.