Microwave heating digestion vessel

Details Microwave heating digestion vessel Microwave heating digestion vessel

1985-02-19

1986-09-23

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055E, 220316, 215312, 215315, H05B 680

Patent

active

046137386

ABSTRACT:
Microwave digestion vessel of Teflon PFA material including a Teflon PFA vessel with a threaded top and a Teflon PFA cap with internal threads for engaging the vessel threads. A valve assembly extends upwardly from a center portion of the cap and includes a valve seat, a valve ball internal thereto, a Teflon spring uniquely configured and a valve cap holding the spring and ball into the ball seat of the valve seat. An exhaust hole is provided out one side of the valve cap. The vessel includes a flange for encompassing a lower portion of the cap for pressure expansion protection. A ring with an adjoining flange is also provided for the cap to provide for pressure expansion protection.

REFERENCES:
patent: 2226593 (1940-12-01), Stroupe et al.
patent: 2826218 (1958-03-01), Barlow et al.
patent: 4254319 (1981-03-01), Beh et al.
patent: 4343325 (1982-08-01), Fallon
patent: 4395940 (1983-08-01), Child et al.
patent: 4406861 (1983-09-01), Beauvais et al.
patent: 4490597 (1984-12-01), Mengel

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