Baths – closets – sinks – and spittoons – Dry closets – With heating meas
Patent
1976-11-08
1977-11-29
Artis, Henry K.
Baths, closets, sinks, and spittoons
Dry closets
With heating meas
4172, E04H 316, E04H 318, F16L 2202
Patent
active
040598551
ABSTRACT:
A retractable cover mechanism for covering an open area, such as a swimming pool. The mechanism comprises a pair of parallel channels secured on a respective opposed side of an open area to be covered. A plurality of displaceable intermediate cylinders are provided in each of the channels between displaceable end cylinders. The intermediate cylinders are water-conducting and the end cylinder at a first common end of both channels is water-conducting. The end cylinders at a second common end of both channels have solid end walls which are non-water conducting. A first extensible conduit means is secured between facing ends of adjacent ones of the intermediate and end cylinders. Attachment means are secured to at least some of the cylinders and to a cover sheet to displaceably support the cover sheet between the pair of parallel channels. First and second conduit means are connectable to a source of water pressure. The second extensible conduit means is secured between outer end walls of the end cylinders and an associated one of the first and second conduit means whereby the source of water pressure is applicable against the outer end walls of one of the end cylinders at a common end of each of the channels. Valve means is further provided to evacuate the first and second conduit means.
REFERENCES:
patent: 3092844 (1963-06-01), Brunson
patent: 3309716 (1967-03-01), Merrit
patent: 3413661 (1968-12-01), Ross
patent: 3903552 (1975-09-01), Erlandsson et al.
patent: 3979782 (1976-09-01), Lamb
patent: 3982286 (1976-09-01), Foster
LandOfFree
Retractable cover for ground opening does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retractable cover for ground opening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retractable cover for ground opening will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1628581