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 Title: |
US4646373:
Cellular element
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Guldager, Hans; Allerod, Denmark
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| Assignee: |
None
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| Published / Filed: |
1987-03-03
/ 1985-10-04
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| Application Number: |
US1985000784387
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| IPC Code: |
Advanced:
A47C 27/10;
IPC-7:
A47C 27/10;
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| ECLA Code: |
A47C27/08A; A47C27/10;
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| U.S. Class: |
Current:
137/869;
005/706;
601/148;
Original:
005/455;
128/038;
137/869;
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| Field of Search: |
128/033,38
114/345
441/041
297/453,DIG. 3
005/421,423,448-450,453-458,468,469
137/869
251/061
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| Priority Number: |
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| Abstract: |
In a cellular element, e.g. an air mattress, the individual cells (1) are connected via a narrow passage (2) to a duct (3) which can be connected via a valve to a first pressure source. In each cell (1) a body (4) is placed, bearing against the mouth of the passage (2) into the cell, closing it tightly, and in the duct (3) at least one expansible organ (5) is placed which, when expanding, will press the body (4) away from the mouth of the passage (2). The expansible organ or organs may consist of a tube, which is closed at one end, and the other end of which can be connected to a second pressure source, if required via a valve. The body (4) placed in a cell (1) may appropriately be hollow and made of a yielding material. In such an element a wall of each cell, e.g. in the form of a membrane, can make up an individual supporting surface. When the cells are exposed to uneven pressure from outside, e.g. because a person is sitting on the element, and the bodies placed in the cells are pressed away from the position where the passage between cells and duct is closed, the medium held in the cells-e.g. air-will be able to circulate freely among the cells, and the cells will assume shapes corresponding to the external pressure. When the pressure of the expansible organ on the bodies ceases, the bodies will again close the passages between cells and duct, and the compound supporting surface has been individually adjusted.
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| Attorney, Agent or Firm: |
Holman & Stern ;
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| Primary / Asst. Examiners: |
Murtagh, John E.; Rudy, Andrew Joseph
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
DE FR GB SE
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| Family: |
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First Claim:
Show all 3 claims |
I claim:
1. An inflatable cellular structure comprising individual inflation cells each formed at least partially of a flexible material and each connected to an inflation duct through an inlet-outlet passage, and valve means for the respective inlet-outlet passages comprising a valve body in each cell extending through the respective inlet-outlet passage and an expansion element in said duct connected to the valve body for moving the valve body between respective positions in which the valve body opens and closes the inlet-outlet passage responsive respectively to expanding and contracting movements of the element.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 4 U.S. patent(s) that reference this one
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