Memry Corp. of Bethel swung to a $460,000 third quarter loss, down from the $1.5 million in profits it took in during the same quarter last year. Sales at the company, which works with medical device manufacturers, fell to $12.2 million, down from $14 million in the year ago period. Net loss per diluted share was 2 cents, compared with earnings of 5 cents per diluted share in the third quarter last year.