A cutting chain for a chain saw including a clearer immediately in front of the cutter tooth, the clearer normally extending past the cutter tooth and preventing cutting but depressible by a solid object such as wood to allow cutting.

A cutting chain for a chain saw including a safety element in front of a cutter tooth, the safety element normally extending past the cutter tooth to inhibit cutting, but depressible by a solid object such as wood to allow cutting.

The invention is directed to a saw chain for a motor-driven chain saw which includes cutting links, side connecting links, driving links and safety links. Each safety link has an upper edge defining a wave-like contour that prevents chips from accumulating during the cutting action. The cutting links and safety links of the saw chain are arranged with respect to each other so that overlap is avoided between the tail end of the rearward projection of the safety link and the forward projection of ...

A cutting chain for a chain saw including a safety element normally preventing the cutter tooth from cutting wherein the safety element is mounted on the driver link and by inward pressure; i.e., toward the cutter bar, is rotated to a position under the cutter tooth so that the latter may cut.

In manually operated mobile storage apparatus which moves back and forth in guided movement by floor mounted tracks and which includes a manually operable drive wheel accessible by the user and connected to a storage unit drive shaft by a chain there is provided a chain tensioning device to eliminate slack and provide the appropriate tension. The chain tensioning device comprises a bearing block with a roller bearing which is journalled on the shaft and which can be drawn by bolts to deflect the...

A load binder tool uses a pair of first and second coupler-tension members pivotal connected, at spaced apart centers, to an operating handle. A pair of major gear members engage a pair of minor gear members attached to the first coupler-tension member. A tension connector pin is journaled to both the major gear member and one end of the second coupler-tension member. The rotation of the connector pin about the axis of rotation of the major gear members creates an additional mechanical advantage...

A chain, a chain wheel and a chain transmission for a lifting gear in accordance with the present invention increases the dynamic resistance of a round steel chain that is primarily intended for use in combination with a lifting gear. The chain members (5, 6) are locally deformed plastically in the area of their braces (9, 10) so as to form flat lateral zones (11).

Conveyor chains are provided which comprise free balls which are free to rotate in all directions thereby allowing for the stable conveyance of articles in any direction in the entire horizontal plane and at an increased speed in the direction of conveyance with reduced contamination in the conveyance environment. A conveyor chain 100 comprises a number of chain links 110 comprising a plurality of hinge portions 112 in a zigzag formation protruding from the front and rear end edges that are conn...

A ratchet tensioner is disclosed for a chain enclosed within a casing that does not have a removable cover. The tensioner including a body for mounting on the exterior of the casing, a plunger slidably mounted in the body and urged in use into the interior of the casing to deflect a run of the chain laterally in order to increase tension in the chain. The plunger is formed with ratchet teeth which interact with a pawl that is pivotably mounted on the body to permit movement of the plunger only i...

An assembly comprising a plurality of linked members configured to inter-operate with a cord member. The plurality of link members are interconnected such that the body of one link member passes through the inner surface defining a void of the other link member. In this way, each link member is connected to its adjacent neighbor. A load-bearing flexible cord member is configured to interoperate with the plurality of link members in such a way that a portion of the cord member passes through the ...