Computer monitor stand

Patent No. US6220558 (titled "Computer monitor stand") on Aug 26, 1999. The application was issued on Apr 24, 2001.

What is this patent about?

’558 is related to the field of computer peripheral supports, specifically monitor stands designed to bridge over docking stations for portable computers. In the context of modern office setups, these stands must provide a stable, elevated platform for heavy displays while maintaining a low profile to accommodate the docking hardware underneath. Traditional plastic stands often struggle with long-term structural integrity, leading to unsightly sagging or mechanical failure when supporting larger, professional-grade monitors.

The underlying idea behind ’558 is that the load-bearing capacity of a plastic structure can be exponentially increased by alternating the orientation of structural channels rather than relying on standard one-sided ribbing. By using an inverted rib construction, the design creates a series of alternating U-shaped channels where the base wall of one channel is vertically offset from the next. This geometry significantly increases the moment of inertia of the platform, allowing a lightweight plastic component to mimic the stiffness of much thicker or metal-reinforced structures.

The claims of ’558 focus on a base platform architecture comprising spaced-apart side channel members connected by a series of adjacent transverse channel members. The defining characteristic is the spatial relationship between these transverse elements: a first channel is inverted relative to the second, meaning their respective base walls are offset by a specific vertical distance. This interlocking, undulating cross-section forms the primary structural engine of the stand, distributing weight across the entire width of the platform to the supporting legs.

In practice, the invention is implemented as a two-piece assembly consisting of this high-strength molded base and a separate aesthetic cover. The base features the alternating channel grid, while the cover provides a flat, uniform surface for the monitor to rest upon. By integrating the legs directly into the intersections of the side and transverse channels, the design ensures that the sustained loading of a heavy monitor is transferred directly down the vertical axis of the legs, preventing the off-axis bending moments that typically cause plastic stands to buckle.

This approach differs from prior solutions by achieving high rigidity without the use of sheet metal reinforcements, which are known to interfere with wireless signals and fail EMI compliance tests. While traditional designs simply add more vertical ribs to the underside of a flat plate, this alternating channel geometry provides a moment of inertia roughly 350% greater than single-sided ribbing of the same thickness. This allows the stand to support monitors weighing 85 pounds or more while remaining thin enough to maintain an ergonomically correct viewing height.

How does this patent fit in bigger picture?

Technical Landscape

In the late 1990s when ’558 was filed, computer peripheral support systems were typically implemented using either reinforced plastic shells or metal-based frames to accommodate the increasing weight of cathode-ray tube displays. At a time when systems commonly relied on internal sheet metal reinforcements to provide structural rigidity, hardware constraints made achieving high load-bearing capacity non-trivial without introducing electromagnetic interference or increasing the vertical profile of the stand. In this era, plastic molding techniques for office equipment were generally limited to single-sided ribbing, which often resulted in material fatigue or excessive deflection when supporting heavy hardware over extended periods.

Prosecution Position

The disclosed invention achieves a meaningful technical advancement through an architectural shift in structural ribbing design, specifically utilizing an inverted rib construction within a plastic base. By integrating adjacent transverse channel members where one channel is inverted relative to the next and anchored between side channel members, the architecture creates a high-rigidity lattice that overcomes the load-bearing constraints of conventional single-sided ribbing. This structural configuration enables the technical effect of supporting sustained heavy loads while maintaining a low-profile, non-conductive form factor, effectively eliminating the need for EMI-prone metal reinforcements or expensive high-density polymers.

Claims

The patent contains a total of 0 claims, with no independent claims identified. Consequently, there are no independent claims to define the core focus of the invention, and no dependent claims exist to provide additional details or specific limitations to the primary subject matter.

Litigation Cases New

US Latest litigation cases involving this patent.

Case NumberFiling DateTitle
1:25-cv-07157Jun 26, 2025Bestergo Inc. v. CKnapp Sales, Inc.

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US6220558

Application Number
US09383807A
Filing Date
Aug 26, 1999
Publication Date
Apr 24, 2001
External Links
Slate, USPTO , Google Patents