Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1987-02-17
1988-09-13
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204279, G01N 2728, G01N 2730
Patent
active
047707623
ABSTRACT:
An assembly is shown over the top portion of the outer body 14 of a reference electrode or combination pH/reference electrode. An element 50 such as a turning ring covers the fill hole 16 through the outer body 14. In one position of the element 50, a sealing element 24 such as an O-ring forms a passage between fill hole 16 and a through hole 52 through element 50. In other positions of element 50, the sealing element 24 seals the fill hole 16. In embodiments shown, a housing 30 is integral with the cap assembly (60, 70) and aligns the sealing element 24 over the fill hole 16.
REFERENCES:
patent: 3070539 (1962-12-01), Arthur et al.
patent: 3088905 (1963-05-01), Glover
patent: 3445366 (1969-05-01), Vermeer
patent: 3676319 (1972-07-01), Kirsten
patent: 3756936 (1973-09-01), Neuwelt
patent: 4157289 (1979-06-01), Ikenoue et al.
patent: 4390406 (1983-06-01), Kato et al.
patent: 4477330 (1984-10-01), Nielsen
Corning, "Plastic Barrel Combination Electrode", (SF-2 478) (two pages and including Catalog Nos. 476115, 476110, 476101, 476176).
Radiometer Catalog, "Our 50th Year", p. 5 (includes product number GK2501).
Extech, "Portable Meters and Monitors", p. 22 (includes product numbers H60161B, H60161S).
Falconer Dennis G.
Kato Kenneth J.
Schrimm Kenneth J.
Doernberg Alan M.
Fisher Scientific Company
Tung T.
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