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US 3,945,288 AGranted
Saw chain
AssigneeTextron Inc.
InventorJaroslav Jiri Olmr
Life of this patent
Estimating the term…
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AssigneeTextron Inc.
InventorJaroslav Jiri Olmr
Estimating the term…
The bi-directional saw chain is made up of two links, a cutting link and a connecting link. The cutting link is symmetrical about its vertical center line and includes an L-shaped cutting section having cutting surfaces along both the leading and trailing edges. Legs extend outwardly from the cutting link on either side of the cutting section. These legs terminate in a surface which acts as a depth gauge. Each leg also includes a stop shoulder for engagement with the connecting link. The connecting link includes two offset and parallel sections, each having an outwardly extending flange. The outwardly extending flanges of adjacent connecting links form side by side parallel and spaced flanges which accommodate a perimetric trackway on the saw blade. Each connection is pivotal so that the leading leg acts as the depth gauge and the trailing leg engages the connecting link to form the stop and position the cutting link for proper functioning.
A saw chain made up of a series of pivotally connected links including a plurality of bi-directional cutting links and a plurality of connecting links pivotally connected to and extending outward from opposing ends of each cutting link, each cutting link having an L-shaped cutting element with cutting edges along both the leading and trailing edges and legs extending angularly outward on opposite sides of the cutting element and each terminating in a depth gauge at its distal end and including a stop shoulder adapted for engagement with the connecting link.
In a chain saw having a blade with a perimetrical trackway, the improvement comprising a saw chain made up of two basic links, the first link being a bi-directional cutting link having an L-shaped cutting section with cutting surfaces on both leading and trailing edges and a leg extending outward on opposite sides of the cutting section to form a depth gauge at the distal end thereof and a stop substantially adjacent the cutting section, the second link being a connecting link having two offset and parallel sections joined by a connecting section adapted for engagement with the cutting link stop, each offset section having an outwardly extending flange, said links being pivotally connected so that the connecting sections define side by side parallel and spaced flanges which accommodate the perimetrical trackway.
A saw chain made up of a series of connecting links pivotally connected by pins to form an endless chain and cutting links pivotally spaced along the endless chain, each connecting link including two offset and parallel sections joined by an intermediate section angularly disposed therebetween, each offset section including a hole therethrough to accommodate the pivot pin and an outwardly extending flange, said connecting links formed so that offset sections of adjacent links are positioned in spaced, parallel and side by side relationship.
A bi-directional saw chain cutting link symmetrical about a vertical center line and comprising:
Dependencies are inferred from the claim text.