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US 11,078,051 B2Granted
Seal for a vacuum material lifter
AssigneeVacuworx Global, LLC
InventorsRobert Denton, James Ray Podesta, William J. Solomon
Life of this patent
Estimating the term…
Abstract
A seal for a vacuum lifter and method of manufacture wherein the seal has a continuous unbroken outer fluid resistant skin of elastomer which forms a boundary around a homogeneous cellular structure with no interior seams or joints.
Claims19
A vacuum lifter comprising:
- a rotator configured for attachment to a boom of a piece of construction equipment;
- a pad including a gland extending along a periphery of the pad;
- and
- a seal located in the gland, the seal comprising:
- a cured natural rubber closed cell thermoset elastomer core structure surrounded by an integral and continuous nonporous external skin, the core structure and the external skin being liquid- and petrochemical-resistant.
2 more elements
Dependencies are inferred from the claim text.