Drive mechanism for pressure-gages, comprising a molded plastics main body with embedded bourdon tube
OwnerGiuseppe Stradella, Umberto Stradellainventors
Life of this patent
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Abstract
A drive mechanism for pressure-gages in general, comprising a main body which can support all the members, and which is made by molding a plastic material with simultaneous embedding therein of an end of a Bourdon tubular spring, said end having fixedly inserted therein a small tube, which is also embedded in the plastics body in the same molding operation and which ensures the communication with the pressure source. The movable end of said Bourdon tube has integrally-formed thereon an eye member for connection with an S-shaped link which can actuate the indicating means of the pressure-gauge.
Claims9
A drive mechanism for pressure-gages, which comprises a support main body;
- a Bourdon tubular spring having a movable end and a fixed end embedded in said main body, and a small tube embedded in said main body connected at one end to said Bourdon tubular spring;
- said main body being formed, in a single molding operation, with an integral circular platform, at least one upright support projecting from said platform, and a depending axial stem for connection to a source of pressure, said stem having an axial conduit therein providing communication between the other end of said small tube and said source of pressure, said fixed end of said Bourdon tubular spring being embedded in a first said upright support and said small tube being embedded in said main body during said molding operation.
Dependencies are inferred from the claim text.