Inflatable object, in particular an air mattress, comprising a section serving as a pump and a section to be inflated by the pump
OwnerJosef Grafinventor
Life of this patent
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Abstract
An inflatable object, especially an air mattress, with a part acting as a pump and a part inflatable thereby. In the pump part there is a device for spreading its walls making it unnecessary initially to provide air via the user's mouth or a bellows. A particulate propellant material, which may also take the form of waste, is used. A propellant material is a material which can be compressed and which on decompression, with the introduction of air, increases its volume. To prevent propellant material particles from penetrating into the valve between the pump and the inflatable parts, an air-permeable wall is fitted in front of the valve.
Claims28
An inflatable object comprising:
- at least a first inflatable section and a second inflatable section, the first section forming a pump having an inlet for admitting air into the first section for inflating the second section;
- the pump including:
- a plurality of compressible particles for compression thereof and subsequent decompression with a concomitant increase in volume upon introduction of air through the inlet;
- a one-way valve means for communicating air to the second section from the pump in the first section;
- an air permeable wall means between the compressible particles and the valve means for preventing the compressible particles in the pump from entering the valve means while permitting air to be communicated from the pump to the second section;
- and
- back flow means for communicating air from the second section to the first section upon cessation of pumping to equalize pressure in the first and second sections for inflating the first section.
Dependencies are inferred from the claim text.