Patent US4686724A successfully refreshed from Google Patents.
US4686724A
Expired / Lapsed
US
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Support pad for nonambulatory persons
Assignee: Individual
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Filing: 1986-02-11
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Granted: 1987-08-18
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Expires: 2006-02-11
Abstract
Abstract An open cell foam pad is ripple-cut to create a convoluted face of hills and valleys. A plurality of air-flow channels are cut through the pad in each valley formed. The channels with plugs therein provide the user of the pad with the ability to direct air circulation through the pad to certain parts of the body. These air channels also function to dissipate excess body fluids or medicines. For situations demanding the highest possible amount of air circulation, the ripple-cut pad with open air-flow channels is flat-topped. The size of the flat area on each hill is determined by the weight of body to be supported. For a body weight under 100 pounds, a maximum area of 1/2 inch by 1/2 inch is used with a contact surface to open space ratio of 1:3. For a body weight between 100 and 150 pounds, a maximum area of 1 inch by 1 inch is used with a contact surface to open space ratio of 1:1. For a body weight greater than 150 pounds, a maximum of area of 11/4 inch by 11/4 inch is used.
Inventors
- 👤 Peter H. Bedford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:24
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/146; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05707
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
207 words
A pad for nonambulatory persons, said pad having a foam body with a first and second major side for supporting a human anatomy, the improvement in the pad comprising: a thickness, as measured by the distance between the first and second major side, being about 31/4 inches; a substantially uniform distribution of hills of substantially uniform height and cross-section on the first major side of said foam body, said hills being separated by valleys of a substantially uniform 1 inch depth and a uniform cross-section, each of said hills having a flat top, each of the flat tops on each of said hills being at least 1/2 inches in diameter and being no larger than 11/4 inches in diameter, each of said valleys having an airflow channel terminating at the valley floor and extending through the foam body to the second major side, a plurality of plugs, in a plurality of airflow channels in a manner that permits ready and selective removal of each plug; the second major side being flat; whereby the tops of the hills support a human anatomy with even weight distribution and reduced pressure contact in addition to maximizing air circulation to the parts of the human anatomy in contact with the pad.
Claim 2
Dependent Claim
207 words
A pad for nonambulatory persons, said pad having a foam body with a first and second major side for supporting a human anatomy, the improvement in the pad comprising: a thickness, as measured by the distance between the first and second major side, being about 31/4 inches; a substantially uniform distribution of hills of substantially uniform height and cross-section on the first major side of said foam body, said hills being separated by valleys of a substantially uniform 1 inch depth and a uniform cross-section, each of said hills having a flat top, each of the flat tops on each of said hills being at least 1/2 inches in diameter and being no larger than 11/4 inches in diameter, each of said valleys having an airflow channel terminating at the valley floor and extending through the foam body to the second major side, a plurality of plugs, in a plurality of airflow channels in a manner that permits ready and selective removal of each plug; the second major side being flat; whereby the tops of the hills support a human anatomy with even weight distribution and reduced pressure contact in addition to maximizing air circulation to the parts of the human anatomy in contact with the pad.
Claim 3
Dependent Claim
38 words
The improved pad of claim 1 wherein said plurality of plugs, one located in each of the airflow channels in a manner that permits ready and selective removal of each plug, is at least 5/8 inches in diameter.
Claim 4
Dependent Claim
41 words
The improved pad of claim 1 wherein the flat tops on each of said hills are no larger than 1/2 inch by 1/2 inch, with the ratio of contact surface area to the absence of contact surface area being about 1:3.
Claim 5
Dependent Claim
41 words
The improved pad of claim 1 wherein the flat tops on each of said hills are no larger than 1 inch by 1 inch, with the ratio of contact surface area to the absence of contact surface area being about 1:1.
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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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |