Semi-automatic pool cover
US4351072A · kind A · utility
8Cited by
11References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1980 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Aug 11, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/101
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flexible tarpaulin is rolled about a drum mounted on an axle that is secured to a rigid deck by mounting brackets. A spring acting between the axle and the drum serves to retract the tarpaulin onto the drum. A releasable retraction lock may be used to prevent retraction. The tarpaulin has apertures spaced along its edges and a plurality of fasteners are employed having latching pins that extend through the apertures into anchors embedded in the deck to secure the tarpaulin over the pool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.