Clutch having tamper evident indicator
AssigneeIllinois Tool Works Inc.
InventorIan Ross Ferrier
Life of this patent
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Abstract
A clutch for lifting a concrete component, including a toroidal connector, a latch movable relative to the toroidal connector between a disengaged condition and an engaged condition, and a coupler for coupling the toroidal connector to a lifting apparatus, wherein the coupler includes a first part and a second part pivotal relative to the first part about a pin, and wherein the coupler includes a tamper evident indicator to indicate that the clutch has not been disassembled.
Claims16
A clutch for lifting a concrete component, the clutch comprising:
- a toroidal connector;
- a latch movable relative to the toroidal connector from a disengaged condition to an engaged condition;
- and
- a coupler configured to couple the toroidal connector to a lifting apparatus, wherein the coupler includes a first part and a second part pivotal relative to the first part about a pin, and wherein the coupler includes a bush around a central portion of the pin and a tamper evident indicator having an initial shape that visually indicates that the clutch has not been disassembled and then reassembled using the same tamper evident indicator,
- wherein the pin defines a circular groove about its circumference and the tamper evident indicator includes a member anchored to the bush and in engagement with a part of the pin that defines the circular groove to prevent movement of the pin along its longitudinal axis relative to the bush.
A clutch for lifting a concrete component, the clutch comprising:
- a toroidal connector;
- a latch movable relative to the toroidal connector from a disengaged condition to an engaged condition;
- and
- a coupler configured to couple the toroidal connector to a lifting apparatus, wherein the coupler includes (A) a first part, (B) a pin, (C) a second part pivotal relative to the first part about the pin, and (D) a tamper evident indicator that prevents movement of the pin along a longitudinal axis of the pin;
- wherein the second part forms a second loop configured to engage the lifting apparatus, wherein a longitudinal axis of the tamper evident indicator is parallel to an axis of the second loop, and wherein the tamper evident indicator includes a physical deformation that visually indicates that the same tamper evident indicator has not been removed from the coupler and then reassembled.
A clutch for lifting a concrete component, the clutch comprising:
- a toroidal connector;
- a latch movable relative to the toroidal connector from a disengaged condition to an engaged condition;
- and
- a coupler configured to couple the toroidal connector to a lifting apparatus, wherein the coupler includes a first part and a second part pivotal relative to the first part about a pin, and wherein the coupler further includes a non-cylindrical bush around a central portion of the pin,
- wherein the bush includes a tamper evident indicator having an initial shape that visually indicates that the clutch has not been disassembled and reassembled using the same tamper evident indicator.
Dependencies are inferred from the claim text.