Browse Prior Art Database

Caster Machine Shipments

IP.com Disclosure Number: IPCOM000088111D
Original Publication Date: 1977-Apr-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Perry, DA: AUTHOR [+2]

Abstract

A caster block 3 is formed of a block 4 of foam plastic, such as 35.2 kg/cubic meter polyethylene, through which a cylindrical opening 5 has been die-cut. The foam plastic block is glued within a plastic tray 6. The tray including side walls 7 and a bottom wall 8 may be formed of drawn polystyrene with a thickness of approximately 2 millimeters.

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Caster Machine Shipments

A caster block 3 is formed of a block 4 of foam plastic, such as 35.2 kg/cubic meter polyethylene, through which a cylindrical opening 5 has been die-cut. The foam plastic block is glued within a plastic tray 6. The tray including side walls 7 and a bottom wall 8 may be formed of drawn polystyrene with a thickness of approximately 2 millimeters.

The die-cut cylindrical opening 5 in the foam block 4 is sized to permit a machine caster to be received therein and retained by a friction fit. The block assembly is not only economical to fabricate and easy to install, but can withstand a high static loading (a set of four can withstand the weight of a 1500 to 2000 pound machine), are reuseable, and are not subject to damage that would compromise performance, for example, being punctured by a forktruck tire will not significantly impair performance. In addition, the blocks act as load spreaders, function to provide shock and vibration isolation, are lightweight, small in size, and eliminate the need for specialized pallets.

By modest alteration of the blocks, additional functions may be achieved which are of benefit in particular environments. For example, by using wider blocks, buffer space around the machine can be provided.

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