Back to results
US 4,058,016 AGranted
Combination vacuum/pressure gauge and dual purpose casing construction
AssigneeRite Autotronics Corporation
InventorEdwin L. Schwartz
Life of this patent
Estimating the term…
Abstract
A casing construction is provided which can be utilized for the assembly of components of either a combination vacuum/pressure gauge or of a high pressure gauge while utilizing the same dial indicator movement; the combination vacuum/pressure gauge having a vacuum connection at one end of the casing and a pressure connection at the other end and the same complete scale can be utilized for the measurement of either value.
Claims15
An instrument casing construction for a combination vacuum/pressure gauge or alternatively a high-pressure gauge comprising:
- a casing base connected at its edges to a casing side;
- first and second opposed cylindrical projections extending upwardly from said base and having a first common longitudinally extending axial line;
- third and fourth opposed cylindrical projections extending upwardly from said base and having a second common longitudinally extending axial line perpendicular to said first axial line;
- each of said projections have a mounting flange extending outwardly therefrom.
1 more element
A combination pressure/vacuum gauge comprising:
- a casing having a base;
- first and second cylinders located on said base on a common axial line;
- first and second pistons in said first and second cylinders, respectively;
- a piston rod connected between said pistons in said cylinders;
- spring means operative between said second cylinder and said second piston for biasing both said pistons toward one end of each of said cylinders;
- a pressure opening in said first cylinder adjacent its said one end, and a vacuum opening in said second cylinder adjacent the end opposite its said one end;
- and
- valve means for connecting a pressure source to said pressure opening or a vacuum source to said vacuum opening causing said pistons to move from said one end of said cylinders.
5 more elements
Dependencies are inferred from the claim text.