Metal working – Method of mechanical manufacture – Converting
Patent
1993-04-26
1994-03-29
Tapoicai, William E.
Metal working
Method of mechanical manufacture
Converting
236 495, 454292, 454304, F24F 1314
Patent
active
052973263
ABSTRACT:
An apparatus and method for converting a fixed-opening air diffuser (21) to an individually-controlled variable air volume diffuser. The fixed-opening diffuser (21) includes a diffuser housing (26) mounted to a support structure (25) and coupled to receive air from a supply conduit (24) positioned behind the support structure (25) and a diffusion assembly (27) mounted across the housing (26) to distribute the air from the housing (26). The method includes the steps of removing the diffusion assembly (27) from a position across the diffuser housing (26) to provide access to the housing, mounting a thermally-powered diffuser actuator assembly (31) having a movable vane (32) coupled to actuator assembly (31) inside the diffuser housing (26) in a position for control of air discharged from the diffuser housing (26) by thermally-driven displacement of the vane (32). Each of the steps of removing and mounting is accomplished while maintaining the diffuser housing (26) in place in the support structure (25) and while maintaining the support structure (25) in a substantially undisturbed state to minimize the release of dangerous materials possibly present in the support structure (25).
REFERENCES:
patent: Re30953 (1982-06-01), Vance et al.
patent: 4491270 (1985-01-01), Brand
patent: 4509678 (1985-04-01), Noll
patent: 4523713 (1985-01-01), Kline et al.
THERMA-FUSER.COPYRGT. I, Thermally Powered VAV Diffuser brochure published in 1981.
Acutherm Limited
Tapoicai William E.
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