Abstract: A drive-in rail attachment or arm attaches left and right side drive-in rails to left and right side uprights in a drive-in storage rack. The left and right side rail arms may each be formed from a flat plate having an upright section, a sidewall section and a rail section. The upright section may be bent about a first axis to an orientation substantially perpendicular to the sidewall section and the rail section bent about a second axis to an orientation substantially perpendicular to the sidewall section. First and second pairs of holes may be provided in the upright section, with the first pair of holes optionally offset from the second pair of holes. Drive-in rails can be attached to the storage rack without the need for welded components.

Abstract: A drive-in rail attachment or arm attaches left and right side drive-in rails to left and right side uprights in a drive-in storage rack. The left and right side rail arms may each be formed from a flat plate having an upright section, a sidewall section and a rail section. The upright section may be bent about a first axis to an orientation substantially perpendicular to the sidewall section and the rail section bent about a second axis to an orientation substantially perpendicular to the sidewall section. First and second pairs of holes may be provided in the upright section, with the first pair of holes optionally offset from the second pair of holes. Drive-in rails can be attached to the storage rack without the need for welded components.

Abstract: A pushback cart storage system includes a cart having a first pair of wheels located at a front end of the cart, and a second pair of wheels located between a rear end of the cart and a midpoint of the cart. The wheels roll along rails on a storage rack or frame. The second pair of wheels is located closer to the midpoint than to the rear end of the cart, such that the rear end of the cart extends beyond the end of the rails when the second pair of wheels are rolled to the end of the rails. Accordingly, less steel, or other material, is required to construct the rails of the storage rack, which reduces the overall cost and weight of the system, while allowing the system to support the same number of pallets as a conventional system.

Abstract: A storage rack has a spaced apart upright frames or vertical columns. Load beams extend between the upright frames. The load beams have flattened or flared ends, allowing the load beams to be directly bolted onto the vertical upright frames. The load beams may be made from standard steel channel sections, by flattening or flaring the ends in a press.

Abstract: A push-back rack storage system has a pair of spaced apart rack rails having lower outside rail flanges. A first cart has front and back wheels which roll on the lower outside rail flanges. A second cart has front wheels which roll on outside rail flanges on side rails of the first cart. The back wheels of the second cart roll on the lower rail flanges of the rack rails. A third cart has front wheels which roll on outside rail flanges of side rails of the second cart. The back wheels of the third cart roll on the lower rail flanges of the rack rails. The carts may be provided with a strut deck, a solid deck, or a wire mesh deck, without interfering with rolling operation of the carts.

Abstract: A push-back storage system includes left and right rails welded to strut members, to provide a precise predetermined spacing between the rails. As the spacing between rails is permanently set during manufacture, no on site adjustment or alignment is needed. Carts can roll smoothly on the rails as the spacing between the rails is maintained. A U-bracket or a J-hook at the front of the bedframe facilitates attachment of the bedframe to a front load beam of a rack assembly. The strut members are welded to the rails.

Abstract: A latching mechanism for a push-back cart storage system includes an outer side member having a notch, and a cart frame section having a wheel assembly supported on the outer side member and a latch assembly engageable with said notch. The mechanism prevents premature rearward rolling of unloaded carts in multiple cart push-back systems wherein the wheels of rearward rolling loaded carts roll on the unloaded carts.

Abstract: A push-back cart storage system includes an outer cart having wheels rolling on support rails. A middle cart has forward wheels rolling on side members of the outer cart. Rear wheels on the middle cart role on the support rails. An inner cart has front wheels rolling on side members of the middle cart, while rear wheels of the inner cart role on the side rails. The rolling carts are all of equal height.

Abstract: An apparatus and a method for retrofitting a storage rack assembly with a push-back system. Rail structures on which a push-back cart will travel are attached to an existing storage rack assembly with no or slight modification of the existing storage rack assembly. The push-back storage system may be retrofitted to a variety of different prior art storage racks; for example, a selective rack assembly or drive-in rack assembly.

Abstract: A warehouse storage rack organization capable of accommodating pallets arranged in four-deep push-back relation is described in which three carts that move along a single pair of rails permit internested disposition of the carts when they are unloaded, and the sequential movement of load-bearing carts by the imposition via a forklift of subsequent loads on the remaining carts. The organization utilizes only a single pair of rails to achieve the desired result, which rails are formed of conventional structural members whereby the cost of production of the organization is significantly reduced.

Abstract: A warehouse storage rack organization capable of accommodating pallets arranged in four-deep push-back relation is described in which three carts that move along a single pair of rails permit internested disposition of the carts when they are unloaded, and the sequential movement of load-bearing carts by the imposition via a forklift of subsequent loads on the remaining carts. The organization utilizes only a single pair of rails to achieve the desired result, which rails are formed of conventional structural members whereby the cost of production of the organization is significantly reduced.