Abstract: Provided is a chuck apparatus enabling ease of rotation of a rotating cylinder in the loosening direction when replacing a tool, suppressed wear of the ratchet teeth, and a longer life span. Through the rotation of a rotating cylinder (1), the chuck apparatus expands or contracts a plurality of jaws (3) inserted into a hole (2a) provided to a tip end of a body (2), and sandwiches and holds a tool (4) using the jaws (3). An annular rotating body (8) screwed together with the jaws (3) and rotating together with the rotating cylinder (1) is fitted to the body (2) inside the rotating cylinder (1).

Abstract: Provided is a chuck apparatus enabling ease of rotation of a rotating cylinder in the loosening direction when replacing a tool, suppressed wear of the ratchet teeth, and a longer life span. Through the rotation of a rotating cylinder (1), the chuck apparatus expands or contracts a plurality of jaws (3) inserted into a hole (2a) provided to a tip end of a body (2), and sandwiches and holds a tool (4) using the jaws (3). An annular rotating body (8) screwed together with the jaws (3) and rotating together with the rotating cylinder (1) is fitted to the body (2) inside the rotating cylinder (1).

Abstract: The present invention provides fresh cheese that is significantly reduced in deterioration of taste or flavor and deterioration of texture and has excellent keeping quality, and a process for producing the same. The fresh cheese of the present invention has a whey protein content of 15 mg or lower per g of solid matter and an acetic acid content of 25 to 500 mg per 100 g of the cheese. The fresh cheese is produced by a process characterized by comprising steps of concentrating skim milk by a microfiltration membrane and adjusting the concentrated milk obtained by microfiltration to pH 4.8 to 5.8 by the addition of acetic acid, followed by heating and kneading.