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US 4,476,960 AGranted
Adjustable chain anchor for lift trucks
AssigneeTowmotor Corporation
InventorWilliam T. Yarris
Life of this patent
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AssigneeTowmotor Corporation
InventorWilliam T. Yarris
Estimating the term…
The lift system for the mast assembly of a lift truck normally includes at least one hydraulic cylinder and a pair of lift chains for selectively raising and lowering a movable assembly (upright or carriage assembly) on a fixed upright assembly. The tensions in the lift chains must be precisely set and periodically adjusted by use of an adjustable anchor, including a bolt threadably mounted on the fixed upright assembly and connected to the chain. Space limitations in present day mast assemblies have dictated the need for an adjustable chain anchor that is compact and is designed to be conveniently mounted on an upper end of the fixed upright assembly for ready access. The adjustable chain anchor (19) of this invention solves this problem by providing a cam member (26) adapted to be rotated to adjust chain tension in response to selective rotation of an end of the chain (17) about a fixed pivot axis (A).
In a mast assembly (11/11') having a fixed upright assembly (12), a movable assembly (15/41') movably mounted on said fixed upright assembly (12), and a lift system (16) including a least one chain (17) having opposite ends thereof anchored to said fixed upright (12) and movable (15/41') assemblies, the improvement comprising:
A lift truck (10/10') having a mast assembly (11/11') mounted forwardly thereon, said mast assembly (11/11') including:
In an apparatus having a first member (12), a second member (41/41') mounted for relative sliding movements on said first member (12), and at least one chain (17) having opposite ends thereof anchored to said first (12) and second (40/41') members, the improvement comprising:
Dependencies are inferred from the claim text.