How Dishwasher Racks Use Articulating Skis to Glide Smoothly

A mechanical assembly for dishwasher racks that uses a pivoting ski foot to help the rack slide over obstacles or transitions without getting stuck.

What it covers

This patent describes a specialized 'ski' attachment for the bottom of a dishwasher rack. The assembly uses a hub and articulation ring to allow the ski foot to pivot or tilt, helping the rack glide over the gap between the dishwasher tub and the door or over uneven tracks. It includes specific suspension arms that dampen movement, ensuring the rack doesn't jerk or jam when it hits a transition point. The tip and tail of the ski feature a serpentine design, which provides flexibility and structural support during the articulation process.

What it doesn't cover

• —Does not cover fixed, non-pivoting rack wheels or rollers.
• —Does not cover motorized or powered rack movement systems.
• —Does not cover rack designs that rely solely on ball-bearing slides.
• —Does not cover the internal plumbing or spray arm mechanisms of the dishwasher.

The clever bit

The use of a 'serpentine' body for the ski tip and tail combined with integrated suspension arms allows the rack to absorb impact forces at the transition point, rather than just rolling over it rigidly.

Why it matters

Dishwasher racks often catch or drop when rolling from the door onto the main tub track. This mechanism addresses a common consumer frustration—the 'clunk' or jam that occurs during loading and unloading. By adding a dampened, pivoting contact point, it improves the tactile quality and durability of the appliance's rack system.

Real-world examples

• 1.GE Appliances dishwashers
• 2.Haier-branded kitchen appliances
• 3.Modern high-end dishwasher lower rack glide systems