Tomkins Industries, Inc.

Philips Industries Inc.

Marvin L DeHart

Steven J Bowser

Dale B Johnson

A diffuser (10) is disclosed which is suitable for use in high security areas such as a jail. The diffuser is constructed of 10 gauge plate and defines an inlet passage (16) and a return passage (18). The return passage (18) can be utilized as a second inlet passage if desired. The air flow is through slots in a plate (34). A deflector portion (24) is curved over the slots to deflect the air in a first direction. In a second embodiment, a diffuser (100) is provided with slotted plates (102, 104) and a deflector (112) to discharge air in opposite horizontal directions.

Security slot diffuser

An air diffuser (10) is disclosed which has the significant advantage of employing only three subassemblies at the point of installation, including a base (12), a cone assembly (14) and a single bolt (16) to fasten the subassemblies together. Contoured rods (26, 28) are mounted with the base (12) to receive channels (48) on a series of brackets (46) to align the cone assembly and base. The brackets (46) forming the channels (48) also perform the function of securing a middle and lower diffuser cone together. A method of manufacture is also disclosed.

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Mesquite, TX, United States of America

Marvin L DeHart