Haruo Sakai

Title: Haruo Sakai and His Cooking Appliance Inventions.

Introduction

Haruo Sakai is an inventor associated with Hikone, Japan, and Sanyo Electric Co., Ltd. His work includes inventions for cooking appliances that use sensing and control methods to improve food heating and weight detection. Sakai is credited with 5 patents.

Latest Patents

One of Sakai’s latest patents is “Cooking Appliance with Infrared Sensor Having Movable Field of View.” The invention moves an infrared sensor’s field of view through a heating chamber during an initial search for food. If the sensor remains fixed but detects insufficient temperature variation after a set period, the appliance initiates another search. This helps prevent the sensor from remaining incorrectly positioned where no food is present.

Another patent is “Cooking Apparatus Capable of Determining Weight of Food on Turn Table and Method of Detecting Weight of Food on Turn Table.” In this invention, a microwave oven detects pulse intervals as its turntable rotates and uses those measurements to estimate the food’s weight. If the expected pulse signals are not detected during a rotation, the control circuit retries detection during a subsequent rotation.

Career Highlights

Sakai’s patent work focuses on practical sensing and control features for cooking appliances. His inventions address challenges such as locating food with an infrared sensor and estimating food weight from turntable signals.

Collaborations

Sakai’s listed coworkers include Hiroyuki Uehashi and Kiyoshi Hiejima. His work is associated with Sanyo Electric Co., Ltd.

Conclusion

Haruo Sakai’s patents demonstrate an engineering focus on improving how cooking appliances detect food, monitor heating, and determine weight.