Waterbed mattress with tethered wave motion-inhibiting inserts
AssigneeClassic Corporation
InventorDonald W. Keefer
Life of this patent
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Abstract
To anchor an insert in proper wave motion-inhibiting position within a waterbed mattress, a rectangular, top vinyl sheet is patterned with corner sections which, upon formation of the mattress, are folded to provide a pair of inwardly extending anchoring flaps. Endless vinyl tethers are looped through apertures in the flaps to provide a secure four-corner anchorage of the inert to the mattress. Several forms of tether loop connections to an insert are disclosed for different constructions of wave motion-inhibiting inserts.
Claims15
A waterbed mattress comprising, in combination:
- at least one sheet of film material having integral marginal panels and sheet portions between adjacent said marginal panels configured to provide at least one flap having a tether aperture, said marginal panels being folded to provide sides of a mattress shell defining a water-tight chamber, and said sheet portions being folded inwardly to project said flaps into the chamber;
- an insert disposed in the chamber to inhibit wave motion within the chamber;
- and
- tethers looped through said tether apertures of said flaps and connected with said insert to retain said insert in position within the chamber.
A method of manufacturing a waterbed mattress comprising the steps of:
- cutting a first sheet of plastic film material to include a central portion of a size corresponding to a rectangular top wall of the mattress, marginal panels surrounding the central portion, and corner sections interconnecting adjacent marginal panels, each corner section including at least one flap, each flap having an aperture;
- cutting a second sheet of plastic film material to a size corresponding to a rectangular bottom wall of the mattress;
- folding the marginal panels into potential side and end walls of the mattress;
- folding the corner sections to project the flaps inwardly from the marginal panels;
- lapping edge portions of at corners of the second sheet with edge portions of the corner sections;
- sealing the lapped edge portions of the second sheet corners and the corner sections in joined relation;
- positioning a rectangular wave motion-inhibiting insert between the first and second sheets;
- inserting separate strips of plastic film material through the apertures of the pair of flaps of each corner section and through an anchoring provision at each corner of the insert;
- sealing lapped opposed ends of each strip into an endless loop;
- lapping edge portions of the marginal panels with edge portions of the second sheet between the corners thereof;
- and
- sealing the lapped edge portions to create a water-tight mattress shell with the insert anchored in a predetermined position within the mattress by the tethers.
Dependencies are inferred from the claim text.