# US 11,306,499 B2 · Roll-up spa and swim spa cover > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,306,499 B2 - Document ID: US11306499B2 - Status: Granted - Kind: B2 - Application number: 16/230,530 - Filed: 2018-12-21 - Published: 2020-07-30 - Granted: 2022-04-19 - Earliest claimed: 2010-05-26 - Assignees: E2E LLC - Applicants: Donald Jay Gustason - Inventors: Donald Jay Gustason - Web page: https://patentgrep.com/patent/US11306499B2 ## CPC - E04H 4/108: {supported by frames} - E04H 4/101: {wound-up on a fixed axis} - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) ## Abstract A spa cover constructed of layers of pliable insulation encapsulated within a weatherproof vinyl reinforced fabric or a rubber membrane which is attached to rigid square support tubes that run parallel to the short end of the spa. The encapsulated insulation is fastened to the bottom of the square support tubes with corrosion-free nylon anchors which allows the soft insulation assembly to span over the water and rest directly on the spa bartop surface sealing the heat in and keeping debris out. An arched fiberglass rod structure supports a weatherproof rainfly which is permanently affixed to the flat cover assembly to shed rain and debris. The entire assembly is held in place at each end with adjustable straps which stretch the cover from end to end keeping the rainfly taut. Removing the cover to access the spa involves undoing the straps on one end and rolling the cover assembly towards the other end until the desired amount of spa exposure is reached. Covering the spa after use is just the opposite procedure. ## Claims ### Claim 1 A roll-up spa cover comprising: (A) a multi-layer flexible insulation sheet structure comprising at least two flexible layers, the sheet structure sized to at least cover a top of a spa; (B) a plurality of support members attached to the insulation cover in a parallel spaced relationship; (C) a plurality of flexible rods that are supported by the plurality of support members, one or more of the flexible rods, in use, forming an arc above the insulation cover; and (D) a rain fly supported by the plurality of flexible rods. ### Claim 2 (depends on 1) The roll-up spa cover of claim 1 wherein the insulation sheet structure comprises; (A) at least one support layer to which the plurality of support members are attached; (B) at least one heat-reflective insulation layer disposed on a side of the support layer opposite to the plurality of support members; and (C) at least one spacer layer. ### Claim 3 (depends on 2) The roll-up spa cover of claim 2 wherein the at least one spacer layer comprises at least two layers of closed-cell foam. ### Claim 4 (depends on 3) The roll-up spa cover of claim 3 wherein the layers of closed-cell foam have a maximum thickness of ¼″. ### Claim 5 (depends on 2) The roll-up spa cover of claim 2 wherein the at least one heat-reflective insulation layer comprises at least one aluminized double-bubble insulation layer. ### Claim 6 (depends on 1) The roll-up spa cover of claim 1 wherein a height of the arc of the flexible rods is less than a spacing between the support members to facilitate the cover being rolled up. ### Claim 7 (depends on 1) The roll-up spa cover of claim 1 comprising a plurality of end caps that are disposed in an end of the support members. ### Claim 8 (depends on 7) The roll-up spa cover of claim 7 wherein the plurality of end caps comprise a plurality of rain fly support end caps comprising: (A) a cap portion inserted into an end of the support member; and (B) a bent rod protruding from the cap portion, the bent rod extending upward and inward from an end of the support member and providing an anchor for an end of a flexible rod. ### Claim 9 (depends on 8) The roll-up spa cover of claim 8 comprising the rain fly support end cap in each end of at least one support member and a flexible rod extending between the bent rod of the rain fly support end cap at end of the support member, wherein the flexible rod is compressed between the bent rods at each end of the support member such that the flexible rod is caused to arc between the ends of the support member. ### Claim 10 A roll-up spa cover comprising: (A) insulation cover means for covering and insulating a spa; (B) rain fly means for providing rain cover to the insulation cover means; (C) flexible support means for providing support to the rain fly means in arced relationship over the insulation cover means; (D) support member means attached to the insulation cover means for providing support to the flexible support means. ### Claim 11 (depends on 10) The roll-up spa cover of claim 10 comprising end cap means disposed within the support member means for attaching the rain fly means. ### Claim 12 (depends on 11) The roll-up spa cover of claim 11 wherein the end cap means comprises bent rod means for securing the flexible rod means between ends of the support member means. ### Claim 13 A method for rolling up a spa cover, the spa cover comprising: (A) a multi-layer flexible insulation sheet structure comprising at least two flexible layers, the sheet structure sized to at least cover a top of a spa; (B) a plurality of support members attached to the insulation cover in a parallel spaced relationship, the plurality of support members extending laterally across the spa cover; (C) a plurality of flexible rods that are supported by the plurality of support members, one or more of the flexible rods, in use, forming an arc above the insulation cover; and (D) a rain fly supported by the plurality of flexible rods; the method comprising rolling the spa cover from a first longitudinal end to an opposite longitudinal end such that the plurality of flexible rods are disposed within a spacing between the support members. ### Claim 14 (depends on 13) The method of claim 13 comprising rolling the spa cover onto a cradle assembly. ### Claim 15 A method for manufacturing a spa cover comprising at least the following steps, not necessarily in the order shown: (A) providing a membrane dimensioned to fit over a top of a spa; (B) attaching a plurality of rigid support members to the membrane laterally across the membrane in spaced relationship relative to each other; (C) securing a plurality of flexible support rods between ends of a plurality of the plurality of rigid support members flexible rod such that the support rods form an arc across the membrane; and (D) securing a fly over the plurality of flexible support rods. ### Claim 16 (depends on 15) The method of claim 15 wherein securing the plurality of flexible support rods comprises locating support end caps in ends of a plurality of the rigid support members and securing the flexible support rods to the support end caps. ### Claim 17 (depends on 16) The method of claim 16 wherein securing the flexible support rods to the support end caps comprises engaging ends of the flexible support rods with angled rods extending outward of the support end caps. ### Claim 18 (depends on 17) The method of claim 17 comprising compressing the flexible rods between the angled rods such that the flexible rods form an arc. ### Claim 19 (depends on 15) The method of claim 15 comprising inserting rainfly securing end caps in ends of a plurality of the plurality of rigid support members and securing the fly to the rainfly securing end caps. ### Claim 20 A method comprising: (A) providing a spa cover to an end user of a spa, the spa cover being adapted to be removed from a spa by rolling the cover, the spa cover comprising: (a) a multi-layer flexible insulation sheet structure comprising at least two flexible layers, the sheet structure sized to at least cover a top of a spa; (b) a plurality of support members attached to the insulation cover in a parallel spaced relationship; (c) a plurality of flexible rods that are supported by the plurality of support members, one or more of the flexible rods, in use, forming an arc above the insulation cover; and (d) a rain fly supported by the plurality of flexible rods.