IP Library Granted Patent US 8,844,580
Granted Patent B2
US 8,844,580 · App. 12/751,139 · Granted Sep 30, 2014

Low fluid permeation rubber hose

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Quick Facts
Patent No.
US 8,844,580
App. No.
12/751,139
Granted
Sep 30, 2014
Kind
B2
Abstract

Low or near zero fluid permeation hose for petroleum and other chemical transfer applications. The hose includes an inner tube formed of a vulcanized rubber, and a barrier layer of a strip of a fluoropolymer of other polymeric material resistant to fluid permeation. The strip is spiral wound about the longitudinal axis of the hose.

Claims (16)

1. A low fluid permeation hose, the hose extending lengthwise along a longitudinal axis and comprising:

an inner tube formed of a vulcanized rubber;

a first barrier layer comprising a first strip of a first polymeric material having a pair of edges defining a widthwise extent of the first strip therebetween, the first strip being spiral wound about the longitudinal axis with each edge of the first strip being spaced-apart from the next adjacent edge; and

a sealing strip spiral formed of a vulcanized rubber wound about the longitudinal axis on the first strip, the sealing strip having a widthwise extent overlapping each edge of the first strip and the next adjacent edge thereof.

2. The hose of claim 1 wherein the first polymeric material is a thermoplastic.

3. The hose of claim 1 wherein the first polymeric material is a fluoropolymer.

4. The hose of claim 1 wherein the first polymeric material is selected from the group consisting of polytetraflurorethylenes (PTFE), fluorinated ethylene propylenes (FEP), and copolymers, blends, and combinations thereof.

5. The hose of claim 1 wherein the first strip is a film having a thickness of between about 1-10 mil.

6. The hose of claim 1 wherein:

the first strip has a pair of edges defining a widthwise extent of the first strip therebetween; and

each edge of the first strip is overlapped by the next adjacent edge.

7. The hose of claim 1 wherein the vulcanized rubber forming the sealing strip is a fluororubber.

8. The hose of claim 1 wherein the barrier layer is the outermost layer of the hose.

9. The hose of claim 1 wherein the barrier layer is the innermost layer of the hose.

10. The hose of claim 1 further comprising a second barrier layer, the second barrier layer comprising a second strip of a second polymeric material spiral wound about the longitudinal axis.

11. The hose of claim 10 wherein the second polymeric material is a fluoropolymer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 5, 2018
From: PARKER-HANNIFIN CORPORATION
To: PARKER INTANGIBLES, LLC
Reel/Frame 045843/0859 →