Chemical resistant evaporation control structures
US10155619B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2014 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jul 11, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to chemically resistant structures that float on top of a liquid to reduce the level of evaporation from the liquid. The liquid could be in a small container or vat, or in a larger pool, pond, or reservoir. The structure is preferably a foamed material of a polyamide or fluoropolymer, or may be a hollow or foamed structure having a polyamide or fluoropolymer outer layer. The structures covering the liquid may consist of a single structure or two or more discrete structures that partially or fully cover the surface of a liquid. The covering is especially useful where the fluid contains toxic, reactive or corrosive substances. One preferred structure is a polyvinylidene fluoride foam structure (such as a KYNAR from Arkema Inc) at about 0.1-36 inches in length/diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.