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US 2008/0001335 A1Published application
Turnbuckle load indicator
AssigneeTork Lift Central Welding of Kent, Inc.
InventorJon Kay
Life of this patent
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Abstract
A load indicator for a spring loaded tensioning device. The indicator comprises an o-ring displaceable along a spring loaded tensionable shaft in a turnbuckle device. When the turnbuckle is unloaded, the indicator device is placed in a known position relative to an indicating mark. When the turnbuckle is loaded, the load causes the load indicator to be displaced a known distance for a known load on the spring loaded turnbuckle. For camper tie-downs, a displacement of about one-quarter inch is desirable for a load of about 300 pounds tension.
Claims3
A load indicating method for turnbuckles, comprising:
- providing a turnbuckle having a spring loaded linearly displaceable shaft, said shaft having an unloaded position relative to an indicating position;
- providing a moveable load indicating device on said spring loaded linearly displaceable shaft;
- moving said load indicating device to a turnbuckle unloaded position;
- loading said turnbuckle;
- observing the distance of said moveable load indicating device when said turnbuckle is loaded, from said position of said load indicating device when said turnbuckle is unloaded.
2 more elements
Dependencies are inferred from the claim text.