Flow measuring device

Claim 2

A fluid measuring device comprising: housing having a bore therethrough; a pair of spaced fluid passageway means in said housing for permitting fluid to exit said housing for differential pressure measurement; and removable orifice means removably insertable substantially across said housing bore intermediate said pair of passageway means, said orifice means comprising, a carrier member having a central arcuate cutout portion of slightly greater than 180 degrees, an orifice plate and centrally apertured seal plates on opposite sides of said orifice plates, all of said plates being carried within said carrier cutout portion whereby said plates are restrained from radial movement.

Claim 3

A fluid measuring device, comprising: housing means having a bore therethrough and a cutaway portion substantially perpendicular to the axis of said bore, said cutaway portion having a rounded root and intersecting said bore; a pair of substantially identical sleeve members removably and oppositely inserted within opposed ends of said housing bore; orifice means removably positioned within said cutaway portion and intersecting said housing bore, intermediate facing ends of said sleeve members, said orifice means including (a) a carrier having a central arcuate cutout portion of greater than 180 degrees and a lower surface correlative in configuration with said rounded root, (b) an orifice-containing plate having seal plates positioned on opposite sides thereof, all of said plates being carried centrally of said carrier cutout portion, all of said plates having part of their circumferentially extremeties extending outwardly from said cutout portion and removably positioned within a portion of said bore below said cutaway portion; and means for releasably locking said orifice means within said housing cutaway portion.

Claim 4

A fluid measuring device, comprising: housing means having a bore therethrough and a cutaway portion substantially perpendicular to the axis of said bore, said cutaway portion having a rounded root and intersecting said bore; a pair of substantially identical sleeve members removably and oppositely inserted within opposed ends of said housing bore; orifice means removably positioned within said cutaway portion and intersecting said housing bore, intermediate facing ends of said sleeve members, said orifice means including (a) a carrier having a central arcuate cutout portion of greater than 180 degrees and a lower surface correlative in configuration with said rounded root, (b) an orifice-containing plate having seal plates positioned on opposite sides thereof, all of said plates being carried centrally of said carrier cutout portion, all of said plates having part of their circumferentially extremeties extending outwardly from said cutout portion and removably positioned within a portion of said bore below said cutaway portion; and means for releasably locking said orifice means within said housing cutaway portion.

Claim 5

The device of claim 2 wherein said locking means includes fluid aperture means through at least one of said sleeve members and fluid passageway means communicating between said fluid aperture means and said carrier.

Claim 6

The device of claim 2 and including means for sealing engagement between each of said facing ends of said sleeves and said orifice means.

Claim 7

A fluid measuring device comprising: a housing having a bore therethrough and a locking plate removably blocking radial access to said bore; removable orifice means positioned substantially within said housing bore, said orifice means including an orifice plate carrier, an orifice plate carried by said carrier, and a movable orifice plate carrier cover; first fluid passageway means in said housing for permitting fluid on opposite sides of said orifice means to exit said housing for differential pressure measurement; and means for forcing said cover against said housing locking plate when sufficient fluid pressure exists within said housing, said forcing means includes aperture means through a relatively thin walled portion of said carrier and second fluid passageway means communicating with both said housing bore and said carrier aperture means, whereby said cover may be urged against said housing locking plate.

Claim 8

A fluid measuring device comprising: a housing having a bore therethrough and a locking plate removably blocking radial access to said bore; removable orifice means positioned substantially within said housing bore, said orifice means including an orifice plate carrier, an orifice plate carried by said carrier, and a movable orifice plate carrier cover; first fluid passageway means in said housing for permitting fluid on opposite sides of said orifice means to exit said housing for differential pressure measurement; and means for forcing said cover against said housing locking plate when sufficient fluid pressure exists within said housing, said forcing means includes aperture means through a relatively thin walled portion of said carrier and second fluid passageway means communicating with both said housing bore and said carrier aperture means, whereby said cover may be urged against said housing locking plate.

Claim 9

The device of claim 5 and including detent means for releasably securing said locking plate to said housing.