Method and apparatus for lifting flexible bags

摘要

A system and method for lifting heavy bags is presented. A heavy bag lifting apparatus includes a handle, a first grabber device, a second grabber device and a plurality of cross-member devices. Each of the first and second grabber devices has a plurality of pin structures. The first grabber device is pivotally connected to the second grabber device. The cross-member devices pivotally connect the first grabber device and second grabber device together. The plurality of cross-member devices are also pivotally connected to the handle. The first grabber device, the second grabber device and plurality of cross-member device are arranged so that pin structures on the first grabber device and the pin structures on the second grabber device are pushed together in proportion to an amount of weight being lifted by the heavy bag lifter apparatus.

主权项

1. A heavy bag lifting apparatus comprising:
a handle with a first end and a second end; a first grabber with two outward extending arms; a first plurality of gripper structures formed on the first grabber; a second grabber with two outward extending arms; a second plurality of gripper structures formed on the second grabber; two arms of the first grabber pivotally connected to the two arms of the second grabber; four cross-members, wherein one each of the cross-member is each pivotally connected to the two arms of the first grabber and the two arms of the second grabber so that one cross-member is connected to each of the two arms for the first grabber and the two arms of the second grabber, wherein two of the four cross-members are pivotally connected to the first end of the handle and the other two cross-members members are pivotally connected to the second end of the handle; and wherein the first grabber and the second grabber are adapted to be placed on opposite sides of a bag to be lifted; a spring to pull the first grabber toward the second grabber; and a tab formed on the two arms of the first grabber and wherein the spring is attached between one of the tabs formed on the two arms of the first grabber and one of the two arms of the second grabber.