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Pivot-Mounted Casters for Shock Load Isolation

IP.com Disclosure Number: IPCOM000037790D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-30
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Akins, TC: AUTHOR

Abstract

This article describes a mounting arrangement using shock absorbing casters for heavy machines such as printers. Resiliency is supplied by foam pads, one for compliance and another for absorbing shock.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 96% of the total text.

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Pivot-Mounted Casters for Shock Load Isolation

This article describes a mounting arrangement using shock absorbing casters for heavy machines such as printers. Resiliency is supplied by foam pads, one for compliance and another for absorbing shock.

Shipping subjects heavy machines to high shock loads. Special packing consisting of cushioned pallets is required for air shipments and internal blocking for both padded van and air shipments. In addition, the machines must accommodate uneven installation surfaces.

The arrangement shown in the figure is an economical alternative to the expensive, presently used methods. A caster 2 is mounted on a plate 3 that pivots about a pin 4 when installed on a machine base 5. A leveling foam pad 6 and a shock absorbing foam pad 7 are secured to the top of the plate 3. One such arrangement is used at each corner of a machine.

The leveling foam pad 6 compresses under load of the the machine. The compressed height permits compliance between the caster 2 and the installation surface. When subjected to shock loads, the leveling foam pad 6 compresses further to allow the shock absorbing foam pad 7 to dissipate the additional load.

Static and dynamic loads require foam pads having different characteristics. Proper choice of the foam composition for each pad allows the machine to be stable in operation and to absorb shock loads when shipped. This arrangement not only reduces the cost associated with additional packaging but also reduces ...