There were more closings than usual on Rockville Pike this summer, as a number of longtime businesses made quiet exits while the crowds were out of town. Ted’s 355 Diner and The Potomac Grill both packed up their kitchens in recent months, while the Entenmann’s Bakery Outlet relocated to Jessup. Plow & Hearth closed its store at Congressional Plaza, making way for a Chop’t salad restaurant that’s scheduled to move in next spring. Hank Dietle’s ended its brief partnership with the Curley’s Q food truck, which served barbecue from the Dietle’s kitchen from May through the end of August. And Hudson Trail Outfitters, a locally owned competitor to REI, is closing its store at Montrose Crossing along with the rest of its D.C.-area locations.