Multi-layer expandable hose

US9863565B2 · kind B2 · utility

Assignee

• Teknor Apex Company · US

Inventors

• Chris LaTulippe · Fitchburg, US
• Kevin Cai · Danville, US
• Ron Eilertson · Mansfield, US
• Timothy L. Chapman · Stanton, US
• Steve Correa · Brownsville, US
• Michael Melo · Central Falls, US
• Paul C. Burke · Saint Johnsbury Center, US
• Darnell C. Worley, II · Uxbridge, US

Key dates

• Filing date: Nov 18, 2015
• Grant date: Jan 9, 2018
• Expiry date: May 27, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L11/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An expandable hose assembly that is able to expand one or more of longitudinally along the length-wise axis of the hose between hose ends and radially, to an expanded state in response to application of at least a minimum fluid pressure to an inner tube of the hose. Once the fluid pressure falls below the minimum fluid pressure, the hose will contract. The hose includes a thermoplastic elastomer inner layer and a slip coating layer thereon having lubricating properties that increases the life of the hose assembly. The hose assembly can include an outer sheath or covering that covers the inner tube and slip coating layer.