Cleaning machine specialist Tennant (NYSE: TNC) this week posted a sharp drop in third-quarter earnings as profitability fell below management's plan for the second straight quarter. "Our third quarter results reflect slower growth in North America attributed to timing of key strategic account deals, the restructuring of our field service team, continued manufacturing inefficiencies and raw material inflation," CEO Chris Killingstad said in a press release. Management says the integration of the business is running ahead of plan and now executives hope to begin capitalizing on their wider addressable market with help from a string of new product innovations.