Method and apparatus for lifting flexible bags
View Patent ↗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.
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.
2. The heavy bag lifting apparatus of claim 1 wherein the first plurality of gripper structures further comprises:
a plurality of pointed teeth.
3. The heavy bag lifting apparatus of claim 2 wherein the plurality of pointed teeth further comprises:
an equally spaced apart plurality of pointed teeth.
4. The heavy bag lifting apparatus of claim 1 wherein the equally spaced apart plurality of pointed teeth further comprises:
an equally spaced apart plurality of pointed teeth that are made out of a single piece of metal.
5. The heavy bag lifting apparatus of claim 1 wherein the two outward extending arms of the first grabber further comprises:
two outward extending arms that extend outward from the first grabber at about a 45 degree angle.
6. The heavy bag lifting apparatus of claim 1 wherein the first grabber further comprises:
a first grabber that is generally rectangle in shape.
7. The heavy bag lifting apparatus of claim 6 wherein the first grabber is formed out of wood.
8. The heavy bag lifting apparatus of claim 1 wherein the two arms of the first grabber further comprises:
two arms of the first grabber that are made of metal.
9. The heavy bag lifting apparatus of claim 1 wherein the two arms of the first grabber wrap at least partly around four of four sides of the first grabber.
10. The heavy bag lifting apparatus of claim 1 wherein the cross-members are pivotally connected to outward ends of the two arms of the first grabber and to outward ends of the two arms of the second grabber.
11. The heavy bag lifting apparatus of claim 1 wherein the first grabber is generally rectangle in shape and about 1.5 inches tall, about 10 inches in length and about ⅜ of an inch thick.
12. 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 are pivotally connected to the second end of the handle;
wherein the first grabber and the second grabber are adapted to be placed on opposite sides of a bag to be lifted; and
plastic pins connecting the two arms of the first grabber to the two arms of the second grabber and the four cross-members to the two arms of the first grabber and the two arms of the second grabber.
13. 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 are pivotally connected to the second end of the handle;
wherein the first grabber and the second grabber are adapted to be placed on opposite sides of a bag to be lifted; and
plastic pins connecting the two arms of the first grabber to outward ends of the two arms of the second grabber, wherein the pins are located at central locations of the first grabber at central locations of the two arms of the second grabber.