Stock material or miscellaneous articles – Sheet including cover or casing – Foamed or expanded material encased
Patent
1988-11-15
1989-08-15
Van Balen, William J.
Stock material or miscellaneous articles
Sheet including cover or casing
Foamed or expanded material encased
4498, 428247, 4283144, 4283166, 4283171, B32B 326
Patent
active
048573744
ABSTRACT:
A spa/hot tub cover is structurally strong to essentially completely cover an opening of a spa/hot tub except for a limited vent, and withstand a person's weight. In so doing the spa/hot tub cover itself will not absorb vapor, moisture, or water, and thereby not become heavier because of the containment of moisture. The interior of the spa/hot tub cover has several barriers to any possible absorption of vapor, moisture, or water, whereby, if an outside or outer barrier is punctured, only a small quantity of vapor, moisture, or water, will be absorbed. At a central portion of this cover, commencing from the top and continuing on down through to the bottom, the following layers of an overall lamination are: a top weatherable plastic; a contact cement serving as a sealant and adhesive; an expanded polystyrene shaped to define the shape of the spa/hot tub cover; a contact cement serving as a sealant and adhesive; a polypropylene scrim foil; a contact cement; a closed cell foam of polyethylene; and then a bottom polyester fabric reinforced polyvinylchloride. The laminations of this central portion continue on to the periphery of each spa/hot tub cover. Where subsequent fasteners may be received, aluminum angles are selectively positioned about this periphery. The polypropylene scrim foil continues up and over the periphery of these laminations. The bottom polyester fabric reinforced polyvinylchloride also continues up alongside the periphery of these laminations. A vinyl angle is adhered about the top corner of the periphery of these laminations having a leg horizontally overlapping the periphery edge of the weatherable plastic and having a leg vertically overlapping the upturned portions of the polyester fabric reinforced polyvinylchloride. A sealing bead is located where the horizontal overlapping leg of the angle is positioned on the top weatherable plastic and where the vertical overlapping leg of the angle is positioned on the polyester fabric reinforced polyvinylchloride, thereby completing the assembly of this structurally strong, non vapor, non moisture absorbing, spa/hot tub cover. This cover in various embodiments has a sloping water draining top surface, has multiple sections, has hinges, has handles, and/or has gas spring actuators used during removal and replacement.
REFERENCES:
patent: 4088805 (1978-05-01), Wiegand
patent: 4208469 (1980-06-01), Dial
patent: 4274158 (1981-06-01), Pogorski et al.
patent: 4598506 (1986-07-01), Nohl et al.
patent: 4601072 (1986-07-01), Aine
patent: 4798756 (1989-01-01), Fukushima et al.
Mattern Jr. Roy E.
Van Balen William J.
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