초록 ▼

A portable liquid containment has an endless containment wall surrounding a liquid containment area. To form the containment a top layer of elastomeric polymer compound is formed to the shape of the containment wall and containment area and is reinforced with woven fabric to provide a reinforced, li

A portable liquid containment has an endless containment wall surrounding a liquid containment area. To form the containment a top layer of elastomeric polymer compound is formed to the shape of the containment wall and containment area and is reinforced with woven fabric to provide a reinforced, liquid-impervious, seamless and foldless top membrane. A bottom layer of the same elastomeric polymer compound is applied to the inverted top layer and in curing unites with the underside of the top membrane while the top layer is inverted.

대표청구항 ▼

[ We claim:] [1.] A method of making a portable liquid containment having an upstanding endless curb enclosing a recessed containment surface comprising the steps of:a) providing a form having an endless curb enclosing an area of surface which is recessed relative to the curb;b) applying a continuou

[ We claim:] [1.] A method of making a portable liquid containment having an upstanding endless curb enclosing a recessed containment surface comprising the steps of:a) providing a form having an endless curb enclosing an area of surface which is recessed relative to the curb;b) applying a continuous layer of a curable liquid elastomeric polymeric material over the shape of the form an curing the layer to produce a continuous liquid-impervious top membrane having a membrane recessed surface portion surrounded by a membrane curb portion which is channel shaped and has an open bottom side;c) removing the top membrane from the form and inverting it;d) applying a shielding strip to the open side of the channel-shaped curb portion of the membrane; ande) while the top membrane is inverted, applying to the top membrane and shielding strip a continuous layer of a liquid elastomeric polymeric material and curing it to unite it with said top membrane and form a liquid-impervious containment lower membrane covering the said curb portion, and the recessed surface portion of the top membrane.