Title: Pressure gauge or pressure indicator having axially-operating internal members with visual indication

Abstract: A pressure gauge without Bourdon tubular spring and associated traditional mechanism, which members are replaced by a simplified system comprising a plurality of differently-colored plungers slidably telescoped in one another and projecting into a transparent head memberhaving such a geometrical shape as to transmit the image of said plungers to an observer, thus indicating the amount of pressure in a container to be checked.

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Inventors: Stradella, Fabio
Stradella, Cinzia

Application Number: 847700
Filing Date: 1977-11-02
Publication_date: 1979-08-14
Assignee:
Primary Class(es): 116/272 73/744
Other Classes:
US Patent Ref:

2711711	Jun, 1955	Harman	350/112.
2827122	Mar, 1958	Clark	116/114.
2850900	Sep, 1958	Billington	73/715.
3181496	May, 1965	Bilbrey	116/70.
3501959	Mar, 1970	Womack	73/715.

Other Refs: 477781

Jan, 1938	GB

Primary Examiner: Swisher, S. Clement
Assistant Examiner: Corr, Denis E.
Attorney: Jacobs & Jacobs