US4751757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave dampening device for use in a water bed
Assignee: American Thermo-Seal Inc
•
Filing: 1987-06-11
•
Granted: 1988-06-21
•
Expires: 2007-06-11
Abstract
Abstract A water bed mattress made from a watertight envelope is shown having a pliable sheet of polyethelene with gas cells uniformly spaced throughout the pliable sheet in a grid-like pattern for supporting baffles that are attached to the pliable sheet by sewing.
Inventors
- 👤 Carlos Moreno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:52
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/087; A47C27/085; A47C27/088
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
169 words
A water bed mattress structure, comprising: a liquid tight envelope formed from flexible sheet material having an upper surface for supporting the weight of a user; a single pliable sheet disposed within said envelope having a shape that generally conforms to the shape of said upper surface of said envelope, said single pliable sheet having a plurality of gas cells arranged in uniform rows in a uniform grid pattern adapted to float said single sheet in the liquid intended for use in said envelope, said gas cells arranged in said uniform grid pattern to control the firmness of said mattress; apertured, container-like baffles attached to the bottom of said single pliable sheet; and continuous, individual pliable sheets positioned inside some of said baffles, said individual pliable sheets having a plurality of gas cells arranged in uniform rows in a uniform grid pattern adapted to float said individual pliable sheets in the liquid intended for use in said envelope, whereby said individual pliable sheets increase the firmness of said mattress.
Claim 2
Dependent Claim
169 words
A water bed mattress structure, comprising: a liquid tight envelope formed from flexible sheet material having an upper surface for supporting the weight of a user; a single pliable sheet disposed within said envelope having a shape that generally conforms to the shape of said upper surface of said envelope, said single pliable sheet having a plurality of gas cells arranged in uniform rows in a uniform grid pattern adapted to float said single sheet in the liquid intended for use in said envelope, said gas cells arranged in said uniform grid pattern to control the firmness of said mattress; apertured, container-like baffles attached to the bottom of said single pliable sheet; and continuous, individual pliable sheets positioned inside some of said baffles, said individual pliable sheets having a plurality of gas cells arranged in uniform rows in a uniform grid pattern adapted to float said individual pliable sheets in the liquid intended for use in said envelope, whereby said individual pliable sheets increase the firmness of said mattress.
Claim 3
Dependent Claim
23 words
The mattress defined in claim 1 further comprising: a pad positioned between said single pliable sheet and said upper surface of said envelope.
Claim 4
Dependent Claim
43 words
The mattress defined in claim 1 further comprising: a pad attached to the bottom of said baffles and adapted to sink said baffles in said liquid, whereby said baffles are extended within said envelope between said single pliable sheet and said sinking pad.
Claim 5
Dependent Claim
17 words
The mattress defined in claim 3 wherein the bottom pad is attached to said baffles with adhesive.
Claim 6
Dependent Claim
20 words
The mattress defined in claim 3 wherein the bottom pad is attached to the bottom of the baffles with staples.
Claim 7
Dependent Claim
20 words
The mattress defined in claim 3 wherein the bottom pad is attached to the bottom of the baffles with stitches.
Claim 8
Dependent Claim
23 words
The mattress defined in claim 3 further comprising: a pad positioned between said single pliable sheet and said upper surface of said envelope.
Claim 9
Dependent Claim
75 words
The mattress defined in claim 1 further comprising: an additional pliable sheet positioned above said single pliable sheet having a shape that generally conforms to said single pliable sheet, said additional pliable sheet having a plurality of gas cells arranged in uniform rows in a uniform grid pattern adapted to float said additional pliable sheet in the liquid intended for use in said envelope, whereby said additional pliable sheet increases the firmness of said mattress.
Claim 10
Dependent Claim
23 words
The mattress defined in claim 8 further comprising: a pad positioned between said additional pliable sheet and said upper surface of said envelope.
Claim 11
Dependent Claim
43 words
The mattress defined in claim 8 further comprising: a pad attached to the bottom of said baffles and adapted to sink said baffles in said liquid, whereby said baffles are extended within said envelope between said single pliable sheet and said sinking pad.
Claim 12
Dependent Claim
23 words
The mattress defined in claim 10 further comprising: a pad positioned between said additional pliable sheet and said upper surface of said envelope.
References Cited (Backward Citations)
US2171805A
Cited
US3011930A
Cited
US3748669A
Cited
US4076872A
Cited
US4399575A
Cited
US4296510A
Cited
US4462128A
Cited
GB2099296A
Cited
US4523343A
Cited
US4475257A
Cited
US4577356A
Cited
US4558476A
Cited
US4663789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |