Air conditioning hose
US4862923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1986 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Jun 2, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00571
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hose for auomotive air-conditioning, transporting or otherwise handling refrigerants is disclosed which comprises an inner and an outer cover and a reinforcement disposed therebetween, the inner tube including an inner and an outer peripheral wall and a polyamide layer laminated therebetween. The inner and outer peripheral walls have a specified range of elasticity, and the polyamide layer has a specified thickness, whereby the hose is rendered highly resistant to heat, moisture-permeation and refrigerant-permeable, and flexible, and further free of damage from creeps or cracks from dynamic fatigue in the vicinity of metal fitting applied on the hose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.