Pressure and differential pressure gauge with overload...

Details Pressure and differential pressure gauge with overload... Pressure and differential pressure gauge with overload...

2007-10-02

2007-10-02

Allen, Andre J. (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S736000

Reexamination Certificate

active

10537343

ABSTRACT:
A pressure pickup, having a pressure chamber, which is located between a separating membrane and a platform. A pressure canal for hydraulic transmission of pressure to a measuring cell, includes, for dynamic overload protection, a Venturi throttle implemented by providing that the pressure canal has at least one segment whose flow cross section is variable. Such segment is preferably provided in the form of an annular canal. The flow cross section can be changed, for example, by an axial shifting of a conical inner wall relative to a complementary, conical outer wall, or by the deforming of an elastic inner or outer wall of the annular canal.

REFERENCES:
patent: 3738343 (1973-06-01), Zeyns et al.
patent: 6705169 (2004-03-01), Textor
patent: 7021149 (2006-04-01), Dannhauer et al.

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