Battery cap with electrolyte level indicator

Details Battery cap with electrolyte level indicator Battery cap with electrolyte level indicator

1984-03-29

1985-12-31

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Having specified venting, feeding or circulation structure

Venting structure

429 91, H01M 200

Patent

active

045621276

ABSTRACT:
The indicator cap (22 or 80) is formed of a base connected to a transparent tube (46) forming a cylindrical cavity (48) receiving a colored or opaque float (70). The position of the float (70) within the tube (46) indicates the level of the electrolyte in the cell (20) of the battery (10). The float contains an upper collar (74) which cooperates with top vent (60) or side vent (92) to seal the cell. The collar (74) engages the annular disc (76) or apertured collar (86) to prevent the float (70) from falling into the cell (20) when the cap (22 or 80) is removed from the aperture (24).

REFERENCES:
patent: 2835720 (1958-05-01), Buskirk
patent: 2886624 (1959-05-01), Krukowski
patent: 2888984 (1959-06-01), Willits
patent: 3079887 (1963-03-01), Dawkins
patent: 3080753 (1963-03-01), Tickner et al.
patent: 3319597 (1967-05-01), Schnitzius et al.
patent: 3383917 (1968-05-01), Ryder et al.
patent: 3563806 (1971-02-01), Hruden
patent: 3915753 (1975-10-01), Melone
patent: 4184011 (1980-01-01), Strazewski
patent: 4308817 (1982-01-01), Peterson

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