Material or article handling – Load engaging structure of elevator or hoist device with...
Reexamination Certificate
2006-07-12
2009-06-09
Keenan, James (Department: 3652)
Material or article handling
Load engaging structure of elevator or hoist device with...
C294S110100, C414S622000
Reexamination Certificate
active
07544037
ABSTRACT:
A pallet clamping device is mounted between forks of a material handling vehicle. The device clamps to a stringer of a pallet using a pair of horizontally moveable jaws. The jaws are resiliently forced toward one another for clamping a stringer so that a clamped pallet will not move off the forks. The jaws are mounted for pivoting and sliding motion relative to mounting pins which, together with links coupling the jaws to a base of the device, tighten jaw closure if a pallet moves away from the forks. The pivoting and sliding motion of the jaws helps align the jaws with pallets not perfectly aligned with the vehicle. Depression of a foot pedal moves the jaws from a closed position to a latched open position for receiving a pallet stringer. The jaws can also be moved to an unlatched open position for receiving a greater width center stringer. Upon release of the operating device from the unlatched open position, the jaws move toward their closed position.
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Photograph of Hyster lift truck including a pallet clamp; available at least as early as Mar. 25, 2004.
Photograph of Raymond lift truck including a pallet clamp; available at least as early as Mar. 25, 2004.
Haverfield Forrest A.
Heitkamp Michael A.
Meyers Douglas W.
Soder Patrick A.
Crown Equipment Corporation
Keenan James
Stevens & Showalter LLP
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