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:
Jan. 24, 1995
Filed:
Jan. 31, 1994
Applicant:
Inventor:
Kenneth C Struven, San Carlos, CA (US);
Assignee:
Imtec Products, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137340 ; 220-412 ; 220643 ;
Abstract
A bath in which articles are processed by immersion in hot liquid chemicals has a chemical receptacle seated in a casing. Wetting of internal components in the casing, such as heating elements and thermal insulation, is prevented by a seal between the receptacle and the rim of the casing. The otherwise exposed seal is isolated from the external environment of the bath by a barrier of flowing water. The water flow shields the sealing material from corrosive chemical drips and fumes and also has a cooling effect which decreases thermal expansion of components in the region of the seal and thereby reduces structural stresses.