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:
Sep. 08, 1987
Filed:
Feb. 14, 1986
Naoki Yoshida, Sagamihara, JP;
Nobutoshi Kobayashi, Tokyo, JP;
Yamato Scientific Co., Ltd., Tokyo, JP;
Abstract
A temperature controller for an incubator or an oven for keeping the temperature in a chamber at a constant level by controlling the energization of heaters. The temperature controller is provided with two temperature control systems, each of which comprising a sensor for detecting the temperature in the chamber, a thermostat for setting a temperature which is aimed at in the chamber, an error amplifier for detecting a difference between both output levels of the sensor and temperature setting means, and an electric power control circuit for controlling the energization of the heaters in correspondence with the output pulse-length of the circuit.