B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
73/3
B01D 35/14 (2006.01) G01L 19/12 (2006.01)
Patent
CA 1275579
Abstract of the Disclosure: The disclosure describes a device for indicating differential pressures between first and second pres- sure sources comprising a piston member slidably disposed within the bore of a housing dividing the bore into first and second chambers. The housing includes means for connecting the first pressure source to the first chamber and means for connecting the second pressure source to the second chamber whereby the piston member is displaceably responsive to differences in pressure between the first and second pressure sources. The device further com- prises signalling means in cooperative arrangement with the piston member for indicating at least first and second predetermined differential pressure levels respectively corresponding to first and second dis- placements of the piston member within the bore. The signalling means includes first indicator means mag- netically coupled to a piston magnetic means for moving from a non-signalling position to a signalling position in response to the first displacement of the piston member and further includes second indicator means for moving from a non-signalling position to a signalling position in response to the second dis- placement of the piston member.
519217
Marks & Clerk
Pall Corporation
Silverwater Bernard
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