The plaintiff who was injured by a machine sought to sue the company that sold it to him under a theory of strict liability. In order for the seller, who had sold the machine, second hand, to be liable, he would have to be a regular seller. The defendant argued that it was only a casual or occassional seller of such machines, and the district court, agreeing, dismissed the action. The Second Circuit certified the question of whether the defendant was a regular seller of the machine to the New York Court of Appeals. The Court of Appeals held that the defendant was not a regular user and, based on that holding, the Second Circuit affirmed the decision of the District Court, dismissing the action.
The decision in Jaramillo v. Weyerhawuser Company can be found here