Patent ID: 9581272
Date: 2017-02-28
CPC Classifications: F16L

Claim:
1. A hose comprising: a flexible elongated outer tube member having a first end and a second end, an interior of said outer tube member being substantially hollow; a flexible elongated inner tube member having a first end and a second end, an interior of said inner tube member being substantially hollow, said inner tube member is made from an elastic material having an elongation ratio between two and six times its contracted or unexpanded length; an inlet coupler secured to said first end of said inner and said outer tube members, said inlet coupler having a flow thru aperture with an inlet tubular extension section sealed to a first open end of said inner tube member and secured to a first open end of said outer tube member; an outlet coupler secured to said second end of said inner and said outer tube members, said outlet coupler having a flow thru aperture with an outlet tubular extension section sealed to a second open end of said inner tube member and secured to a second open end of said outer tube member; and a flow restrictor secured to said outlet coupler, whereby said flow restrictor creates an increase in water pressure between said inlet coupler and said outlet coupler upon the introduction of pressurized water through said inlet coupler to expand said inner tube member longitudinally along a length of said inner tube member and laterally across a width of said inner tube member thereby substantially increasing a length of said inner tube member to an expanded condition within said outer tube member, wherein said inner tube contracts to a substantially decreased or relaxed length when there is a decrease in water pressure between said inlet coupler causing said outer tube member to be gathered into a contracted state.