Other

Dave O Corey

Jeffrey C Davis

David J Dye

A conveyor oven for cooking food items, having a conveyor belt that passes through the oven. The conveyor belt may include a plurality of tablets composed of a stone-like material attached to a stainless steel linking assembly, or alternatively, a drive chain. Infrared radiation heat sources are provided above and below the conveyor belt. Food passing through the oven on the conveyor belt is cooked by heat transferred directly from radiant heat sources. Cooking is also facilitated by heating stone-like tablets of the conveyor belt with infrared heat sources inserted inside the conveyor belt loop. Heat is transferred from the tablets to the food items, producing superior qualities in the cooked food. Waste heat is reduced by providing a means for automatic control of the heating elements.

Oven apparatus for efficiently cooking food

The present invention efficiently and safely combines directed air flow for drying and heat removal with panel infrared emitters that provide thermal energy for curing LPI solder mask and legend inks onto printed circuit boards being transported though an area with pneumatic and radiant processes occurring simultaneously. The internal geometric configuration of the apparatus and high velocity input air results in an airflow stream in relation to the panel infrared emitters that ensures any flammable vapors are kept separated from the infrared emitters.

Infrared drying and curing system for circuit boards

A vertical circuit board soldering apparatus for soldering printed circuit boards by immersing them in a molten solder bath. Air knives are employed to remove excess solder from boards leaving the bath. A displacement mechanism vertically dips the circuit boards. The mechanism comprises a parallelepiped frame that comprises two spaced apart parallel rails securing a sliding chassis therebetween. The chassis comprises three parallel spaced apart members. An upper member transversely extends between the rails while captivating a portion of each rail adjacent its ends. A parallel lower member depends from the upper member with an adjustable intermediate member therebetween. The intermediate member also transversely extends between the rails while captivating another portion of the rails. The intermediate member is coupled to the upper member by a screw jack that moves the intermediate member upwardly or downwardly to vary the distance therebetween to accommodate various board sizes. The intermediate member supports a pneumatic clamp that grasps the upper edge of an inserted circuit board. A holder on the lower member grasps the opposite lower edge of the circuit board to cooperatively stabilize it therebetween. The lower member comprises an elongated bar extending across the top of the bath penetrated by several regularly spaced, threaded holes. The holes enable the bar to quickly shed molten solder entrained thereon. The holder may be either a grooved bracket or a J-shaped hook. An intermediate member shaft moves between spaced apart rollers to ensure alignment. An alignment assembly ensures front-to-back solder uniformity.

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Rogers, AR, United States of America

Dave O Corey