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. 25, 1992
Filed:
Mar. 08, 1991
Hideyuki Katayanagi, Gunma, JP;
Hideaki Furutachi, Gunma, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
An ice making apparatus includes a refrigeration means having ice making chambers and repeats ice making cycles that involve refrigeration processes to freeze water supplied in the ice making chambers and ice releasing processes to release the ice. These processes are controlled by means of sensors which measure thermal conditions of the apparatus such as condensation temperature and condensation pressure of a refrigerant, and the temperature of the refrigeration means. The control system stores and updates the times required for refrigeration process and ice releasing process under normal sensor conditions and, based on these data, permits the apparatus to make ice even under sensor malfunction that occurred during an ice making cycle. The control system of the invention also permits the apparatus to start ice making cycles under sensor malfunction that has occurred prior to the start up of the apparatus by storing a set of standard reference time data needed to the start up, thereby allowing the apparatus to provide ice irrespective of sensor conditions.