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.
Patent No.:
Date of Patent:
Feb. 27, 1990
Filed:
Aug. 05, 1988
Applicant:
Inventor:
Colin T Cowan, Dormans Park, near East Grinstead, GB;
Assignee:
Baker Perkins plc, Peterborough, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F / ; F28F / ;
U.S. Cl.
CPC ...
165 111 ; 165 70 ; 165167 ;
Abstract
A plate heat exchanger has a number of adjacent plates with vents arranged to vent material from transfer bridge zones to atmosphere. An electrode extending lengthwise of the apparatus and through apertures of the plates contacts the vented material when an unacceptable level of accumulation of vented material occurs in dead spaces adjacent the apertures. A detectable change of effective electrical capacitance or resistance caused by the accumulated material approaching or touching the electrode is used to generate a warning signal.