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:
Aug. 11, 1981
Filed:
Mar. 21, 1979
Yoshiaki Abe, Higashimatsuyama, JP;
Diesel Kiki Company, Ltd., Tokyo, JP;
Abstract
Glow plugs (16), (17), (18), (19) for a Diesel engine are connected to a power source (12) through a switch (13) to receive electrical power. A time constant circuit including a capacitor (32) and resistors (31), (33) is connected to the power source (12) through another switch (27) together with the glow plugs (16), (17), (18), (19). The time constant circuit is constructed so that the voltage across the capacitor (32 ) is proportional to the temperature of the glow plugs (16), (17), (18), (19). A comparator (34) opens the switches (13), (27) to disconnect the power source (12) from the glow plugs (16), (17), (18), (19) and time constant circuit when the voltage across the capacitor (32) is above a predetermined value and closes the switches (13), (22) to connect the power source (12 ) to the glow plugs (16), (17), (18), (19) and time constant circuit when the voltage across the capacitor (32) is below the predetermined value. This has the effect of heating the glow plugs (16), (17), (18), (19) to a predetermined temperature and maintaining them at the predetermined temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile