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:
Jun. 23, 1992
Filed:
Mar. 15, 1990
Tadashi Sakai, Toyoake, JP;
Hoshizaki Denki Kabushiki Kaisha, Aichi, JP;
Abstract
A protective device for an electric control circuit having first and second input buses to be applied with a source voltage of low level from a commercially available source of electricity and an electrical load of low rating voltage connected between the input buses. The protective device is in the form of a switchover relay disposed between the input buses and the electrical load for maintaining the electrical load in connection to the input buses when applied with the source voltage of low level and for disconnecting the elecrical load from the input buses when applied with a source of high level from the source of electricity. The operating voltage of the switchover relay is determined to be higher than a maximum allowable voltage of the electrical load and to be lower than a lower limit value of the source voltage of high level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile