Patent US4597120A successfully refreshed from Google Patents.
US4597120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterbed utilizing dual fluid-filled mattresses and having improved surface continuity
Assignee: CLASSIC CORP
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Filing: 1985-03-21
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Granted: 1986-07-01
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Expires: 2005-03-21
Abstract
Abstract A waterbed comprising a pair of like fluid-filled mattresses arranged side-by-side; surface continuity means preferably being a covering around the bottoms and outward sides of the mattresses and a flexible sheet attached to the covering extending across the mattresses for maintaining the mattresses steadfastly in side-by-side relationship and for reducing the collapse of the abutting edges of the mattresses under load; and means attached to the surface continuity means for reducing motion transfer and heat transfer between the mattresses. In a preferred embodiment, the transfer reducing means is a partition separating the pair of mattresses and being attached on one side only to the bottom of the covering.
Inventors
- 👤 Isaac Fogel
- 👤 Donald W. Keefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:05
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
126 words
A waterbed comprising: a pair of like fluid-filled mattresses arranged side-by-side; surface continuity means at least partly transversely encircling said pair of mattresses for maintaining said mattresses steadfastly in side-by-side relationship and for reducing the collapse of the abutting edges of said mattresses under load, said surface continuity means having a top wall above said mattresses and a bottom wall below said mattresses; and means attached to said surface continuity means for reducing motion transfer and heat transfer between said mattresses, wherein said transfer reducing means comprises a partition separating said pair of mattresses, said partition being attached only on one side to said bottom wall of said suface continuity means and being unattached and movable relative to said top wall of said surface continuity means.
Claim 2
Dependent Claim
126 words
A waterbed comprising: a pair of like fluid-filled mattresses arranged side-by-side; surface continuity means at least partly transversely encircling said pair of mattresses for maintaining said mattresses steadfastly in side-by-side relationship and for reducing the collapse of the abutting edges of said mattresses under load, said surface continuity means having a top wall above said mattresses and a bottom wall below said mattresses; and means attached to said surface continuity means for reducing motion transfer and heat transfer between said mattresses, wherein said transfer reducing means comprises a partition separating said pair of mattresses, said partition being attached only on one side to said bottom wall of said suface continuity means and being unattached and movable relative to said top wall of said surface continuity means.
Claim 3
Dependent Claim
17 words
The waterbed of claim 1 wherein said partition comprises two sheets of closed cell foam arranged side-by-side.
Claim 4
Dependent Claim
20 words
The waterbed of claim 1 wherein said surface continuity means comprises a flexible sleeve transversely encircling said pair of mattresses.
Claim 5
Dependent Claim
25 words
The waterbed of claim 3 wherein said flexible sleeve is a sheet having two opposing ends, said ends having means for connecting said ends together.
Claim 6
Dependent Claim
34 words
The waterbed of claim 1 wherein said surface continuity means comprises a covering around the bottoms and outward sides of said mattresses and a flexible sheet attached to said covering extending across said mattresses.
Claim 7
Dependent Claim
13 words
The waterbed of claim 5 wherein said covering is a waterproof protective liner.
Claim 8
Dependent Claim
22 words
The waterbed of claim 5 wherein said flexible sheet has two opposing ends, said ends having means for connecting said ends together.
Claim 9
Dependent Claim
21 words
The waterbed of claim 5 wherein the perimeter of said flexible sheet has means for connecting said perimeter to said covering.
Claim 10
Dependent Claim
27 words
The waterbed of claim 8 wherein said flexible sheet has a quilted material on its exterior surface to serve as a mattress pad for said fluid-filled mattresses.
Claim 11
Dependent Claim
13 words
The waterbed of claim 8 wherein said flexible sheet comprises an insulating felt.
Claim 12
Dependent Claim
19 words
The waterbed of claim 5 wherein said partition is attached on one side to the bottom of said covering.
Claim 13
Dependent Claim
58 words
The waterbed of claim 1 wherein said surface continuity means comprises a first flexible sheet attached to said mattresses and extending across at least a portion of the top surface of each of said mattresses and a second flexible sheet attached to said mattresses and extending across at least a portion of the bottom surface of said mattresses.
Claim 14
Dependent Claim
18 words
The waterbed of claim 12 wherein said partition is attached on one side to said second flexible sheet.
Claim 15
Dependent Claim
17 words
The waterbed of claim 13 wherein said partition is attached on said one side to said mattresses.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |