Henry Rouwendal said he was in the driveway of his Vernon home at about 10:30 p.m. Friday packing for a business trip when something struck him from behind, The (Newark) Star-Ledger reported Thursday.
"It blind-sided me. I was on the ground and I was thinking, 'What the hell just hit me?'" Rouwendal said.
Rouwendal said he rolled onto his back in time to see the bear grab his sandwich.
"I kicked him three times in the snout and one time in the throat. I think the one in the throat got him," he said.
Rouwendal, who suffered a head injury, a dislocated shoulder and deep bruises on his knee, elbow and buttocks, said it took him about an hour to make his way back into his house, where he was tended to by his wife, who works as a nurse.
Police said the bear is believed to be a mother of two cubs that has been spotted several times in the area.