Grab apparatus for handling bins or cases
First Claim
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1. In an apparatus for grabbing and lifting a case having side walls each formed with a hole, the improvement comprising:
- a plurality of grabs each havinga support anda plurality of generally vertical lift arms each having an upper end independently pivotal in the support about a respective common axis and a lower end provided with a horizontally projecting finger engageable into one of the holes, the fingers of each grab projecting horizontally in the same direction from the respective arm and being vertically offset from one another.
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Abstract
An apparatus for grabbing and lifting a case having side walls each formed with a hole has a plurality of grabs each having a plurality of pivotal lift arms each having a lower end provided with a horizontally projecting finger engageable into one of the holes. The fingers of each grab are vertically offset from one another.
12 Citations
14 Claims
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1. In an apparatus for grabbing and lifting a case having side walls each formed with a hole, the improvement comprising:
a plurality of grabs each having a support and a plurality of generally vertical lift arms each having an upper end independently pivotal in the support about a respective common axis and a lower end provided with a horizontally projecting finger engageable into one of the holes, the fingers of each grab projecting horizontally in the same direction from the respective arm and being vertically offset from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In an apparatus for grabbing and lifting a case having side walls each formed with a hole, the improvement comprising:
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a support; and a plurality of generally vertical grabs each having a plurality of pivotal lift arms each having an upper end independently pivotal about a respective axis in the support and a lower end provided with a horizontally projecting finger engageable into one of the holes, the fingers of each arm being vertically offset from one another and all projecting horizontally in the same direction from the respective arms, and respective springs biasing the arms into a position with the fingers vertically one above the other. - View Dependent Claims (10)
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11. In an apparatus for grabbing and lifting a case having side walls each formed with a hole, the improvement comprising:
a plurality of grabs each having a support and a plurality of generally vertical lift arms each having an upper end independently pivotal in the support and a lower end provided with a horizontally projecting finger engageable into one of the holes, the fingers of each grab projecting horizontally in the same direction from the respective arm and being vertically offset from one another, each grab having three such arms with respective fingers.
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12. In an apparatus for grabbing and lifting a case having side walls each formed with a hole, the improvement comprising:
a plurality of grabs each having a support, a plurality of generally vertical lift arms each having an upper end independently pivotal in the support and a lower end provided with a horizontally projecting finger engageable into one of the holes, the fingers of each grab projecting horizontally in the same direction from the respective arm and being vertically offset from one another, and a brace arm engageable with an inside face of a respective side of the case.
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13. An apparatus for grabbing and lifting a case having side walls each formed with a hole, the apparatus comprising two horizontally spaced grabs each having
a support; -
a plurality of lift arms pivotal on the support and each having a lower end provided with a horizontally projecting finger engageable into one of the holes, the fingers of each grab being vertically offset from one another; springs braced between the support and the arms and biasing the lower ends into outer positions one above the other; and drive means for pivoting the supports and swinging the fingers against respective sides of the case such that at least one of the fingers engages in the respective hole and at least one of the fingers is deflected back out of the outer position. - View Dependent Claims (14)
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Specification