Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
An air flow test apparatus for determining the rate of air flow across a porous laminated metal panel of controlled porosity established by pores of controlled size extending through the lamina and distributed over the area of the lamina comprising: a top, a sealed box secured to said top, said box having an internal cavity and an upward facing opening therein, means for locating said panel in said top, seal means fixedly securing the panel to the top to cover the opening while simultaneously sealing the top, bottom and edge of the panel, means for supplying air pressure at spaced points therein into said box for producing a controlled uniform pressure differential across the sheet throughout its planar extent, and means for preventing the porous panel buckling upon application of air pressure to the box.
Claim 2
Dependent Claim
135 words
An air flow test apparatus for determining the rate of air flow across a porous laminated metal panel of controlled porosity established by pores of controlled size extending through the lamina and distributed over the area of the lamina comprising: a top, a sealed box secured to said top, said box having an internal cavity and an upward facing opening therein, means for locating said panel in said top, seal means fixedly securing the panel to the top to cover the opening while simultaneously sealing the top, bottom and edge of the panel, means for supplying air pressure at spaced points therein into said box for producing a controlled uniform pressure differential across the sheet throughout its planar extent, and means for preventing the porous panel buckling upon application of air pressure to the box.
Claim 3
Dependent Claim
211 words
An air flow test apparatus for determining the rate of air flow across a porous laminated metal panel of controlled porosity established by pores of controlled size extending through the lamina and distributed over the area of the lamina comprising: a top, a sealed box secured to said top, said box having an internal cavity and an upward facing opening therein, means for locating said panel in said top, seal means fixedly securing the panel to the top to cover the opening while simultaneously sealing the top, bottom and edge of the panel, means for supplying air pressure at spaced points into said box for producing a controlled uniform pressure differential across the sheet throughout its planar extent, and means for preventing the porous panel buckling upon application of air pressure to the box, a screen member within said box cavity for minimizing air current eddies within said cavity to maintain uniform pressure conditions within said cavity during dynamic fluid flow from said cavity through the pores of said panel to atmosphere, and means for sampling and averaging pressure at spaced points within said cavity to determine the pressure differential across said sheet and the mass fluid flow across said sheet thereby to determine the effective flow area through said pores.
Claim 4
Dependent Claim
211 words
An air flow test apparatus for determining the rate of air flow across a porous laminated metal panel of controlled porosity established by pores of controlled size extending through the lamina and distributed over the area of the lamina comprising: a top, a sealed box secured to said top, said box having an internal cavity and an upward facing opening therein, means for locating said panel in said top, seal means fixedly securing the panel to the top to cover the opening while simultaneously sealing the top, bottom and edge of the panel, means for supplying air pressure at spaced points into said box for producing a controlled uniform pressure differential across the sheet throughout its planar extent, and means for preventing the porous panel buckling upon application of air pressure to the box, a screen member within said box cavity for minimizing air current eddies within said cavity to maintain uniform pressure conditions within said cavity during dynamic fluid flow from said cavity through the pores of said panel to atmosphere, and means for sampling and averaging pressure at spaced points within said cavity to determine the pressure differential across said sheet and the mass fluid flow across said sheet thereby to determine the effective flow area through said pores.