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:
May. 04, 1993
Filed:
Apr. 30, 1992
Applicant:
Inventor:
John D Ruff, Alexandria, VA (US);
Assignee:
Thermadyne, Inc., Alexandria, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
62124 ; 62137 ; 62186 ;
Abstract
A refrigeration system provides a supply of purified ice pieces by freezing flowing water on an icemaking plate and melting some of the ice pieces to provide a supply of purified water. The system is combined with a household refrigerator to utilize a common compressor, evaporator and condenser. Alternative arrangements are provided for defrost of the evaporator by hot gas bypass, or by electrical heating elements. Individual ice pieces can be formed separately by spacing of the contact points where the evaporator piping meets the ice-forming surface, or by dividing the ice forming surface into separate ice forming cavities, with a plastic mask.