Vertically adjustable spa cover assembly
US6718566B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 24, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Sep 24, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/084
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A vertically adjustable spa cover assembly includes a cover movable above a spa between a raised position and a lowered position, the raised position being vertically above the lowered position. Lifts are used to raise and lower the cover. The cover assembly may also include a screen that surrounds the area between the cover and the spa. The lifts are threaded sections including rods and pipes which engage one another and move up and down as one or more of these threaded sections are rotated by a power source such as a motor or hand crank. The power source may engage the threaded sections through gears or sprockets, or less directly via a system of sprockets and a chain which drives the sprockets and the threaded sections in turn. Alternately, the lifts may be telescoping members pneumatically or hydraulically powered. The cover assembly may be built into a spa unit or added as a retrofit component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.