Patent US3842455A successfully refreshed from Google Patents.
US3842455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid containing mattress
Assignee: Individual
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Filing: 1973-06-28
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Granted: 1974-10-22
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Expires: 1993-06-28
Abstract
Abstract A water bed for use with persons suffering long-term disabilities comprises a centrally located portion filled with a fixed amount of water or other suitable fluid and two pairs of inflatable air cells associated therewith. By selective inflation of the air cells the depth of the fluid can be raised or lowered without changing the amount of fluid in the bed. This feature allows a patient to effectively lower the depth of the fluid to a point where the patient can turn himself over; something extremely difficult to accomplish with the greater depth. An additional feature is presented in an alternate embodiment whereby a widened area is provided in the liquid containing patient supporting portion of the mattress to accommodate the shoulders of the patient.
Inventors
- 👤 J Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:26
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C27/085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
A mattress for use with bed-ridden patients comprising: a patient supporting portion containing a fixed amount of body supporting liquid and means associated with said patient supporting portion for changing the depth thereof without changing the amount of said fixed amount of liquid; said patient supporting portion having a head end and a foot end and being substantially rectangular iN configuration and having a widened area comprised of two opposed sections each having the form of an elongated isosceles trapezoid adjacent said head end to accommodate the shoulder area of a patient; said rectangular patient support portion comprising a liquid-tight bag having at least one sealable fill opening; and wherein said means for changing the depth of said liquid comprises two pairs of air cells, each pair having a small diameter cell and a large diameter cell, one each of said pairs extending longitudinally along said rectangular bag and being operatively attached thereto, said widened areas being formed in said large diameter cells.
Claim 2
Dependent Claim
163 words
A mattress for use with bed-ridden patients comprising: a patient supporting portion containing a fixed amount of body supporting liquid and means associated with said patient supporting portion for changing the depth thereof without changing the amount of said fixed amount of liquid; said patient supporting portion having a head end and a foot end and being substantially rectangular iN configuration and having a widened area comprised of two opposed sections each having the form of an elongated isosceles trapezoid adjacent said head end to accommodate the shoulder area of a patient; said rectangular patient support portion comprising a liquid-tight bag having at least one sealable fill opening; and wherein said means for changing the depth of said liquid comprises two pairs of air cells, each pair having a small diameter cell and a large diameter cell, one each of said pairs extending longitudinally along said rectangular bag and being operatively attached thereto, said widened areas being formed in said large diameter cells.
Claim 3
Dependent Claim
25 words
The mattress of claim 1 wherein a pillow section filled with air is provided at the head end and the foot end of said matress.
Claim 4
Dependent Claim
50 words
The mattress of claim 2 wherein said small diameter cells are individually and independently fillable with air and said larger diameter cells have a common fill position, the connection between said larger diameter cells being via said pillow sections whereby said pillow sections are inflated with said larger diameter cells.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |