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US 10,400,926 B2Granted
Wearable rubber parts for fluid handling services including a polyurethane inner layer
AssigneeGarlock Sealing Technologies, LLC
InventorsLouis J. Mattina, Stephen Joseph Cramb, Brandon T. Phillips, Benjamin James Whipple, Sherwin A. Damdar
Life of this patent
Estimating the term…
Abstract
Wearable rubber parts for fluid handling systems include a four layer structure, wherein the inner most layer of the four layer structure is a polyurethane layer. The polyurethane can be millable polyurethane. The polyurethane used in the inner most layer can be produced by reacting diisolcyanate with a polyester and/or polyether polyols and a chain extender. The wearable rubber part can be an expansion joint, a pinch valve, or a hose.
Claims16
A flexible expansion joint comprising:
- an inner most layer comprising polyurethane;
- a reinforcement layer;
- and
- an outer layer;
- wherein the flexible expansion joint is a flowing arch expansion joint.
2 more elements
A flexible expansion joint comprising:
- an inner most layer comprising polyurethane;
- a reinforcement layer;
- and
- an outer layer;
- wherein the flexible expansion joint is an abrupt arch expansion joint.
2 more elements
Dependencies are inferred from the claim text.