Patent US4738486A successfully refreshed from Google Patents.
US4738486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-filled sitting furniture
Assignee: G J MANATT
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Filing: 1986-12-12
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Granted: 1988-04-19
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Expires: 2006-12-12
Abstract
Abstract The water-filled chair or couch of the present invention includes a frame, and a bladder positioned on the frame. The bladder has a seat portion, a back portion, and a channel extending substantially across the width of the bladder so as to provide communication between the seat and back portions. The bladder is partially filled with water and is void of air such that, as a person sits down into the chair, water is forced substantially instantaneously from the seat portion through the channel and upwardly into the back portion of the bladder which expands to provide support to the person's lower back. The channel has a depth substantially less than that of the seat or back portions. A restrictor bar extends across the channel to maintain the shape thereof as water passes therethrough. A dam is provided at least on the front edge of the bladder to provide support thereto. A heating element and vibrator are provided for additional comfort.
Inventors
- 👤 Keith V. Surber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:33
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C27/085; A47C4/00; A47C4/54; Y; Y10; Y10S; Y10S297/00; Y10S297/03
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
In piece of furniture for sitting, comprising: a frame; a bladder positioned on the frame and having a seat position, a back portion, the bladder being partially filled with liquid and void of air whereby liquid is forced substantially instatntaneously from the seat portion upwardly into the back portion of the bladder when a person sits down into the chair so that the back portion expands, thereby providing support to the person's lower back; restrictor means extending the substantial width of the bladder between the seat and back portions to form a channel means for preventing the channel means from expanding as liquid passes therethrough and for maintaining a constant restricted depth of said channel means when the seat is occupied and unoccupied.
Claim 2
Dependent Claim
123 words
In piece of furniture for sitting, comprising: a frame; a bladder positioned on the frame and having a seat position, a back portion, the bladder being partially filled with liquid and void of air whereby liquid is forced substantially instatntaneously from the seat portion upwardly into the back portion of the bladder when a person sits down into the chair so that the back portion expands, thereby providing support to the person's lower back; restrictor means extending the substantial width of the bladder between the seat and back portions to form a channel means for preventing the channel means from expanding as liquid passes therethrough and for maintaining a constant restricted depth of said channel means when the seat is occupied and unoccupied.
Claim 3
Dependent Claim
24 words
The furniture piece of claim 1 wherein the channel means is a single elongated passageway interconnecting the seat and back portions of the bladder.
Claim 4
Dependent Claim
38 words
The furniture piece of claim 1 wherein the restrictor means includes an elongated bar extending across the width of the bladder and engaging the bladder adjacent the channel means and having opposite ends removably secured to the frame.
Claim 5
Dependent Claim
27 words
The furniture piece of claim 3 wherein the frame has opposite sides each of which have a socket adapted to receive the ends of the restrictor bar.
Claim 6
Dependent Claim
43 words
The furniture piece of claim 4 wherein at least one of the sockets comprises a C-shaped collar having a downwardly presented mouth through which the respective end of the restrictor bar passes for installing and removing the bar to and from the furniture.
Claim 7
Dependent Claim
46 words
The furniture piece of claim 1 wherein the seat portions of the bladder has a front edge and opposite sides, the chair further comprising dam means extending at least across the front edge of the seat portion so as to provide support to the front edge.
Claim 8
Dependent Claim
22 words
The furniture piece of claim 6 wherein the dam means is U-shaped and also extends along each side of the seat portion.
Claim 9
Dependent Claim
17 words
The furniture piece of claim 6 wherein the dam means is constructed of high density, soft foam.
Claim 10
Dependent Claim
18 words
The furniture piece of claim 1 further comprising a heating element for heating the liquid in the bladder.
Claim 11
Dependent Claim
14 words
The furniture piece of claim 1 further comprising vibrator means for vibrating the bladder.
Claim 12
Dependent Claim
23 words
The furniture piece of claim 1 wherein the bladder includes an opening for adding or removing liquid and means for closing the opening.
Claim 13
Dependent Claim
14 words
The furniture piece of claim 1 wherein the bladder is covered with a fabric.
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |