COMPANY NEWS TEMPEST TECHNOLOGY CORPORATION, manufacturer of the Tempest Power Blower, has purchased CONTROLLED AIRSTREAMS, INC. Controlled Airstreams is the originator and largest manufacturer of both electricand gas-powered direct-drive positive-pressure ventilation fans. Tempest plans to move the Controlled Airstreams operation to larger quarters in Fresno, California and to increase manufacturing personnel by 80 percent. Tempest president Dexter Coleman says the acquisition gives the company a complete line of lower-priced, direct-drive gasoline fans and electric fans for smoke ejection. Both lines will be available through the company’s dealers.