High efficiency swimming pool or commercial liquid tank insulation device
US6571789B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Oct 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/44
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Presented is an improved insulation device which, in multiple numbers, forms a swimming pool cover, or cover for other types of liquid containers. A complete cover is formed of multiple independent floatation insulation devices that collectively cover the entire surface of the water or liquid on which they float, yet enable dispersion thereof as a safety feature from below the surface of the water or liquid by a person in the water so that the person may extend his or her head through the cover to breath air. Structurally, the insulation device is hexagonal so as to cooperatively abut adjacent insulation devices to form a complete cover. The insulation device is injection molded-from plastic in two mirror image half-shells each of which is formed with a circular recess centrally disposed within the hexagonal outer periphery. Placing the two mirror image half-shells in confronting abutting position and sonic or electronic welding the union between them forms a unitary insulation device that disperses light and heat energy from the sun into the body of liquid on which the device floats. At least one surface of one of the circular recess is provided with a very thin layer of metal or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.