US3913766A — Self loading and unloading vehicle with laterally…

Claim 1

Independent Claim 232 words

A stacker crane comprising a horizontally movable tower having a vertically movable tray elevator and a tray carried thereby movable transversely of the direction of movement of said tower to deposit or remove pallets with respect to storage cells at one side of said tower wherein said cells have a depth in the direction of transverse motion of said tray sufficient to store two pallets; and means for effecting said transverse motion of said tray to either of two pallet handling positions with respect to said cells, said means comprising a telescopic beam structure for supporting said tray and carried by said elevator; four double acting hydraulic cylinders having respective piston rods extended outwardly of respective cylinders in neutral position; said cylinders being arranged in two pairs wherein the cylinders of each pair are integrally connected at their piston rod ends, a piston rod of each pair being connected together, a piston rod of one pair being secured to said tray elevator, a piston rod of said other pair being connected to drive said telescopic beam structure, whereby pressurizing of said latter cylinder (365) effects tray motion to a predetermined distance in one direction, and pressurizing the cylinder (360) integral with said latter cylinder (365) effects continued motion of said tray in the same dirction to a further predetermined distance, wherein said predetermined distance correspond to pallet positions in a storage cell.

Claim 2

Dependent Claim 232 words

A stacker crane comprising a horizontally movable tower having a vertically movable tray elevator and a tray carried thereby movable transversely of the direction of movement of said tower to deposit or remove pallets with respect to storage cells at one side of said tower wherein said cells have a depth in the direction of transverse motion of said tray sufficient to store two pallets; and means for effecting said transverse motion of said tray to either of two pallet handling positions with respect to said cells, said means comprising a telescopic beam structure for supporting said tray and carried by said elevator; four double acting hydraulic cylinders having respective piston rods extended outwardly of respective cylinders in neutral position; said cylinders being arranged in two pairs wherein the cylinders of each pair are integrally connected at their piston rod ends, a piston rod of each pair being connected together, a piston rod of one pair being secured to said tray elevator, a piston rod of said other pair being connected to drive said telescopic beam structure, whereby pressurizing of said latter cylinder (365) effects tray motion to a predetermined distance in one direction, and pressurizing the cylinder (360) integral with said latter cylinder (365) effects continued motion of said tray in the same dirction to a further predetermined distance, wherein said predetermined distance correspond to pallet positions in a storage cell.

Claim 3

Dependent Claim 95 words

A stacker crane as set forth in claim 1, said telescopic beam structure being reversible to extend said tray in the opposite direction; wherein pressurizing the piston rod connected cylinder (355) of the other pair of cylinders when said cylinders are in neutral position effects movement of said tray to a predetermined distance in a reverse direction, and pressurizing the cylinder (350) integral with said latter cylinder, effects continued motion of said tray to a further predetermined distance in said reverse direction, for handling pallets in storage cells on the other side of said tower.

Claim 4

Dependent Claim 70 words

A stacker crane as set forth in claim 2, said connected piston rods having a slide guide means connection with said tray elevator to maintain said pairs of cylinders in predetermined alignment with the direction of movement of said tray, and all aforementioned connections of piston rods being pivotal wherein said hydraulic cylinders are carried as an integral coplanar unit having limited rocking movement as said beam structure is actuated.

Claim 5

Dependent Claim 179 words

A stacker crane comprising a tower having horizontally spaced columns, a tray elevator in the space between said columns and means comprising an elevator drive means for vertical actuation of said tray elevator, said tray elevator having a tray for carrying cargo and means supporting said tray for horizontal movement in a direction to receive or unload a cargo; including means for centering cargo on said tray transversely of said direction of movement comprising actuatable finger means carried by said tray elevator on opposite sides of said tray and disposed to engage respective opposite sides of cargo upon being actuated toward each other; actuating means for simultaneous operation of said finger means in opposite directions carried by said tray elevator and means for operating said actuating means whereby said finger means can shift an off-center cargo to a position wherein it is transVersely centered on said tray; a mounting for said finger means comprising respective rockable shafts at the sides of said tray and carried by said tray elevator and connected to said actuating means to effect said rocking.

Claim 6

Dependent Claim 179 words

A stacker crane comprising a tower having horizontally spaced columns, a tray elevator in the space between said columns and means comprising an elevator drive means for vertical actuation of said tray elevator, said tray elevator having a tray for carrying cargo and means supporting said tray for horizontal movement in a direction to receive or unload a cargo; including means for centering cargo on said tray transversely of said direction of movement comprising actuatable finger means carried by said tray elevator on opposite sides of said tray and disposed to engage respective opposite sides of cargo upon being actuated toward each other; actuating means for simultaneous operation of said finger means in opposite directions carried by said tray elevator and means for operating said actuating means whereby said finger means can shift an off-center cargo to a position wherein it is transVersely centered on said tray; a mounting for said finger means comprising respective rockable shafts at the sides of said tray and carried by said tray elevator and connected to said actuating means to effect said rocking.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-10-20	1979-04-21	1979-10-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-10-20	1983-04-21	1983-10-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-10-20	1987-04-21	1987-10-21	$7700.00	Window Closed / Lapsed

Self loading and unloading vehicle with laterally moveable load transfer means

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