Isolating container for live animals
First Claim
1. An isolating container for live animals comprising a container body and a closure therefor, said container body having an aperture therein for introduction and removal of animals, said closure being adapted for attachment to the container body to close the aperture, said body and said closure defining an envelope which totally encloses the interior space within the container when the closure is attached to the body, said envelope comprising means permeable to air and carbon dioxide but impervious to microorganisms so that oxygen may pass into said interior and exhalation gases may pass out of said interior through said means without passage of microorganisms into or out of said interior, said air-permeable means comprising a fibrous mat having an apparent density of between about 0.200 g/cm3 and about 0.400 g/cm3 and an air permeability of between about 45 and about 200, said mat comprising cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm., and an average width of between about 0.018 mm. and about 0.024 mm.
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Abstract
The invention is directed to an isolating container for live animals comprising a container body and a closure therefor. The container body has an aperture therein for introduction and removal of animals and the said closure is attached to the container body to close the aperture. The body and the closure define an envelope which totally encloses the interior space within the container when the closure is attached to the body. The envelope comprises a fibrous mat permeable to air and carbon dioxide but impervious to microorganisms so that oxygen may pass into said interior and exhalation gases may pass out of said interior through the mat without passage of microorganisms into or out of said interior. The mat having an apparent density of between about 0.200 g/cm3 and about 0.400 g/cm3, and an air permeability of between about 45 and about 200. The mat comprises cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm., and an average width of between about 0.018 mm. and about 0.024 mm.
75 Citations
51 Claims
- 1. An isolating container for live animals comprising a container body and a closure therefor, said container body having an aperture therein for introduction and removal of animals, said closure being adapted for attachment to the container body to close the aperture, said body and said closure defining an envelope which totally encloses the interior space within the container when the closure is attached to the body, said envelope comprising means permeable to air and carbon dioxide but impervious to microorganisms so that oxygen may pass into said interior and exhalation gases may pass out of said interior through said means without passage of microorganisms into or out of said interior, said air-permeable means comprising a fibrous mat having an apparent density of between about 0.200 g/cm3 and about 0.400 g/cm3 and an air permeability of between about 45 and about 200, said mat comprising cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm., and an average width of between about 0.018 mm. and about 0.024 mm.
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20. A container system for live animals, said system comprising an isolator adapted to receive the animals and an outer container adapted to contain the isolator,
said isolator comprising an isolator body and a closure therefor, said isolator body having an aperture therein for introduction and removal of animals, said closure being adapted for attachment to the isolator body to close the aperture, said body and said closure defining an envelope which totally encloses the interior space within the isolator when the closure is attached to the body, said envelope comprising means permeable to air and carbon dioxide but impervious to microorganisms so that oxygen may pass into said interior and exhalation gases may pass out of said interior through said air-permeable means without passage of microorganisms into or out of said interior, said air-permeable means comprising a fibrous mat having an apparent density of between about 0.200 g/cm3 and about 0.400 g/cm3, and an air permeability of between about 45 and about 200, said mat comprising cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm. and an average width of between about 0.018 mm. and about 0.024 mm. said outer container comprising an outer container body and a closure therefor, said outer container body having an aperture therein for introduction and removal of said isolator, said outer container closure being adapted for attachment to the outer container body to close the outer container body aperture, said outer container further comprising means for inflow of air and outflow of exhalation gases when the outer container is closed, so that animals contained within said system may breathe when said said outer container closure is attached to said outer container body, the relative shape and dimensions of said outer container and said isolator being such as to provide a space between an inside wall of the outer container and the outside of said envelope whereby ventilation of said isolator is assured.
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38. A method for transporting or housing live animals comprising:
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placing the animals in an isolating container comprising a container body and a closure therefor, said container body having an aperture therein through which the animals are introduced, said closure being adapted for attachment to the container body to close the aperture, said body and said closure defining an envelope which totally encloses the interior space within the container when the closure is attached to the body, said envelope comprising means permeable to air and carbon dioxide but impervious to microorganisms so that oxygen may pass into said interior and exhalation gases may pass out of said interior through said air-permeable means without passage of microorganisms into or out of said interior, said air-permeable means comprising a fibrous mat having an apparent density of between about 0.200 g/cm3 and about 0.400 g/cm3 and an air permeability of between about 45 and about 200, said mat comprising cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm. and an average width of between about 0.018 mm and about 0.024 mm.; and attaching said closure to said body to close said aperture. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A filter medium comprising a fibrous mat having an apparent density of between about 0.200 g/cm3 and about 0.400 g/cm3 an air permeability of between about 45 and about 200, said mat consisting essentially of cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm. and an average width of between about 0.018 mm. and about 0.024 mm.
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51. A filter medium comprising a fibrous mat having an apparent density of between about 0.200 g/cm3 and about 400 g/cm3 an air permeability of between about 45 and about 200, said mat comprising between about 90% and about 98% by weight of cellulosic fibers having an average length of between about 0.52 mm. and about 0.72 mm. and an average width of between about 0.018 mm. and about 0.024 mm. and between about 2% and about 10% by weight of glass fibers, said glass fibers having an average diameter of between about 6 microns and about 16 microns and an average length of between about 0.25 inch and about 1.0 inch, said mat being substantially free of asphaltic binder material.
Specification