Patent for Dica ProStack Slot Lock Cribbing Blocks

Dica, known for its outrigger pads, has received a patent for its ProStack Slot Lock Interlocking Cribbing Blocks. Issued in late 2022, the patent (US Patent 11,479,939), is for the slot and flange interlocking system. Each block has a flat lower surface with downward extending lips positioned at opposing ends of the lower surface. When the blocks are stacked and pressure is applied, the blocks lock together, giving users the ability to safely gain cribbing height where the ground is uneven.

“Slot Lock Cribbing Blocks can be used under medium sized equipment with stabiliser or outrigger reaction forces up to 100,000lb such as aerial lifts, digger derricks, concrete pump trucks and knuckle boom cranes,” said Kris Koberg, CEO of Dica.

The interlocking system can be used independently or integrated with slotted SafetyTech Outrigger Pads to increase bearing area and decrease ground bearing pressures. Each layer used increases cribbing height by five inches. “The combination of variable height, interlocking stackability, and compatibility with SafetyTech Outrigger Pads gives operators the safety, stability, and versatility needed when working in unlevel environments,” said Koberg.

The cribbing blocks are purposefully made from a combination of post-consumer and post-industrial recycled material. This material mixture provides users with a long lasting and environmentally friendly solution that won’t splinter, crack, or rot.

Dica, Urbandale, Iowa, is a family-owned and operated company that specialises in building high performance engineered outrigger pads, crane pads, cribbing blocks and magnetic sling protectors that are lightweight, easy to use, and long-lasting. ica products are made in the USA, ASME B30.5 compliant and used by operators on all seven continents and in more than 50 countries around the world.