US4901386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air adjustable water mattress
Assignee: Individual
•
Filing: 1989-02-01
•
Granted: 1990-02-20
•
Expires: 2009-02-01
Abstract
Abstract An air adjustable waterbed mattress which is adapted to support one or more persons on a sleeping surface. An air chamber unit is contained within a liquid-filled bladder and extends from one side of the bladder toward the other. On inflation, the air chamber unit supports a bladder-formed sleeping surface with the amount of support being determined by the amount of inflation. One or more air chamber units may be selectively positioned within the bladder and each unit is preferably formed of multiple chambers.
Inventors
- 👤 Walter W. Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C27/085
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
147 words
In a waterbed of the type adapted to support one or more persons on a sleeping surfaces established by a confined, liquid-containing bladder, the sleeping surface having nominal head, foot and opposing side areas, the improvement which comprises: selectively inflatable air chamber means within said liquid-containing bladder and extending from one of said side areas toward the other of said side areas for adjusting the firmness of at least a portion of the sleeping surface between said head and foot area; means for selectively establishing the inflation level of said air chamber means; and means within said bladder for reducing wave motion therein, said wave motion reducing means comprising fibrous material formed in multiple sheets and interacting with said air chamber means to maintain the position of said air chamber means within said bladder, said air chamber means being positioned above at least some of said sheets.
Claim 2
Dependent Claim
147 words
In a waterbed of the type adapted to support one or more persons on a sleeping surfaces established by a confined, liquid-containing bladder, the sleeping surface having nominal head, foot and opposing side areas, the improvement which comprises: selectively inflatable air chamber means within said liquid-containing bladder and extending from one of said side areas toward the other of said side areas for adjusting the firmness of at least a portion of the sleeping surface between said head and foot area; means for selectively establishing the inflation level of said air chamber means; and means within said bladder for reducing wave motion therein, said wave motion reducing means comprising fibrous material formed in multiple sheets and interacting with said air chamber means to maintain the position of said air chamber means within said bladder, said air chamber means being positioned above at least some of said sheets.
Claim 3
Dependent Claim
20 words
The waterbed of claim 1 wherein said air chamber means extend from one side area to the other side area.
Claim 4
Dependent Claim
34 words
The waterbed of claim 2 wherein said air chamber means are configured to adjust the firmness of said sleeping surface along approximately one-third of the distance from said head area to said foot area.
Claim 5
Dependent Claim
34 words
The waterbed of claim 1 wherein said air chamber means are configured to adjust the firmness of said sleeping surface along approximately one-third of the distance from said head area to said foot area.
Claim 6
Dependent Claim
25 words
The waterbed of claim 1 wherein said air chamber means comprises a plurality of elongated air chambers extending in the direction between said side areas.
Claim 7
Dependent Claim
17 words
The waterbed of claim 5 wherein said elongated air chambers are in fluid communication with each other.
Claim 8
Dependent Claim
25 words
The waterbed of claim 5 wherein said inflation level establishing means comprises selectively operable pump means having an output connected to said elongated air chambers.
Claim 9
Dependent Claim
17 words
The waterbed of claim 7 wherein said elongated air chambers are in fluid communication with each other.
Claim 10
Dependent Claim
18 words
The waterbed of claim 8 further comprising pressure relief means for relieving excessive pressure within said air chambers.
Claim 11
Dependent Claim
13 words
The waterbed of claim 1 wherein said wave motion further comprises hydraulic means.
Claim 12
Dependent Claim
34 words
A waterbed according to claim 1 and being of the type having means within said bladder for reducing wave motion therein, said air chamber means replacing a portion of said wave motion reducing means.
References Cited (Backward Citations)
US2748399A
Cited
US3456270A
Cited
US3803647A
Cited
US3879776A
Cited
US4094025A
Cited
US4068334A
Cited
US4114214A
Cited
US4068335A
Cited
US4109333A
Cited
US4114215A
Cited
US4169295A
Cited
US4310936A
Cited
US4479275A
Cited
US4394784A
Cited
US4644597A
Cited
US4558476A
Cited
US4688283A
Cited
US4707872A
Cited
US4638518A
Cited
US4617690A
Cited
US4723329A
Cited
US4751757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-19 | 2001-08-21 | 2002-02-20 | $7700.00 | Window Closed / Lapsed |