Back to results
US 10,378,652 B2Granted
Seal for a vacuum material lifter
AssigneeVacuworx Global, LLC
InventorsRobert Denton, James Ray Podesta, William 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.
Claims20
A vacuum lifter vacuum pad seal for a vacuum lifter sized to lift heavy objects, 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;
- wherein the seal in cross section includes:
- substantially straight top and bottom sides, and
- opposing left and right sides, each of the left and right sides including:
- a valley centered at a midpoint of a respective side;
- and
- substantially straight portions above and below the valley.
5 more elements
A vacuum lifter vacuum pad seal for a vacuum lifter sized to lift heavy objects, 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;
- wherein the seal in cross section includes:
- substantially straight top and bottom sides, and
- opposing left and right sides, each of the left and right sides including substantially straight portions.
2 more elements
A method for manufacturing a seal for use in a vacuum lifter vacuum pad configured to lift heavy objects, the method comprising:
- curing an extruded natural rubber closed cell thermoset elastomer segment in a heated closed mold to form a core structure surrounded by an integral and continuous nonporous external skin;
- and
- after the curing, cutting a segment of the seal to length;
- wherein the core structure and the external skin is liquid- and petrochemical-resistant;
- and
- wherein the heated closed mold in cross section includes:
- substantially straight top and bottom sides, and
- opposing left and right sides, each of the left and right sides including substantially straight portions.
5 more elements
Dependencies are inferred from the claim text.