The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 31, 1982

Filed:

Jul. 14, 1980
Applicant:
Inventor:

George M Gillies, St. Annes, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F22B / ;
U.S. Cl.
CPC ...
122 / ; 122 32 ; 122 33 ; 237 / ;
Abstract

A boiler for vaporizing liquid hydrogen fluoride has a heat transfer surface arranged to be covered increasingly by the liquid as the liquid level rises so that the heat supplied to the boiler can be adjusted to maintain a constant level of liquid in the boiler and thereby equate the feed rate of liquid hydrogen fluoride to that vaporized. Thus by metering and controlling the feed rate of the liquid the feed rate of the vapor can be metered and controlled.


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