Gas Research Institute

Lang Manufacturing Company

Richard E Wendorf

Paul E George, Ii

George E Sage

Bruce E Taber

Howard A Lang

A pressure regulating valve 10 is provided in a housing 11 filled with oil 23 and having an inlet port 12 and an outlet port 13. A straight elongate vertical tube 14 having a lengthwise slot 19 near its lower end 15 is affixed to the housing and communicates with the inlet port. Closely fitting down into the tube is a piston 16, slidable between a lower position 29 with its lower end 17 below the slot and a substantially higher upper position. A coaxial annular weight 22, surrounding upper portions of the piston and the tube, is affixed to the piston to exert a downward force thereon by virtue of the gravitational attraction of the weight to the earth. When oil is supplied under pressure to the inlet port, the oil presses upward, and the weight presses downward, against the piston; and when the lower end of the piston is at a level between the ends of the slot, the oil flows in from the inlet port, through the open portion of the slot, into the other space in the housing, and out through the outlet port, at a substantially constant predetermined pressure.

Weight controlled valve

An oven for cooking a food product that is exactly controlled for various cooking parameters, including cooking time, temperature, cooking elements used and cooking element duty cycle. Top and bottom cooking elements are provided in the oven. Temperature sensors are placed between each cooking element and the food product. The oven temperature is sensed when the food product is placed in the oven. The type of food product placed in the oven is indicated by the baker a control panel. Previously stored data indicates the cooking parameters to provide the best possible food product. The microprocessor controls the cooking elements to cook the food product according to the cooking parameters. As the correct cooking temperature is approached, the duty cycle of the cooking elements is lowered to ensure that the proper temperature is not exceeded. Once the correct cooking temperature is reached, the cooking elements operate at a predetermined duty cycle for the remaining cooking time. An indication is provided that the food product is done and the food product is removed from the oven. Openings are provided in the oven to permit heat to escape and to permit the food product to be removed from the front or back of the oven.

Growing community of inventors

Bothell, WA, United States of America

Richard E Wendorf