G - Physics – 01 – L
Patent
G - Physics
01
L
73/7
G01L 7/04 (2006.01)
Patent
CA 1127415
LIQUID FILLED PRESSURE GAUGE Abstract of the Disclosure A pressure gauge has a Bourdon tube element and a pointer mechanism supported on an inner support member which is substantially contained inside the case body of the gauge. The inner support member has a bore in communication with the inner space of the Bourdon tube. The case body has a flattened, out- wardly projecting wall zone surrounding a first aperture. An end surface of the inner support member has a contour adapted to the contour of the case wall zone. The matching contours serve to position the inner support member and an outer con- nection member threads into the inner support member to hold it tightly in place. Seals are provided between the inner support and outer connection members and between the outer connection members and the case body. An air cushion sits on top of the dampening fluid. The air cushion is vented through a vent plug having a longitudinal bore that is terminated by a cross hole transverse to the bore. The vent plug is slidably supported by a grommet that seals a second aperture above the air cushion. When the vent plug is raised, the cross hole is closed off.
343869
Borden Ladner Gervais Llp
General Signal Corporation
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