Abstract: To avoid causing significant damage to a temperature sensor or an unintentional shift of the temperature sensor, a hand grip disclosed herein includes: a cylindrical inner housing 110; a heating element 120 provided adjacent to an outer peripheral side of the inner housing 110; a temperature sensor 140 provided adjacent to the outer peripheral side of the inner housing 110; and a sheathing 130 covering the inner housing 110, the heating element 120, and the temperature sensor 140. A recess 111 is formed on an outer peripheral surface of the inner housing 110, and the temperature sensor 140 is fitted into the recess 111.

Abstract: To avoid causing significant damage to a temperature sensor or an unintentional shift of the temperature sensor, a hand grip disclosed herein includes: a cylindrical inner housing 110; a heating element 120 provided adjacent to an outer peripheral side of the inner housing 110; a temperature sensor 140 provided adjacent to the outer peripheral side of the inner housing 110; and a sheathing 130 covering the inner housing 110, the heating element 120, and the temperature sensor 140. A recess 111 is formed on an outer peripheral surface of the inner housing 110, and the temperature sensor 140 is fitted into the recess 111.

Abstract: Provided is a grip member having an electrothermal heater, wherein an end section of a metal strip does not curl up when the metal strip is attached. A metal strip (21) machined in strip-shape is embedded along a spiral flat groove section arranged on a core body (1) and fixed to the core body (1) at the both ends. An end portion (21a) of the metal strip (21) is inserted into a locking member (7), and the end portion (21a) is prevented from curling up. Since curl up of the end portion (21a) is suppressed, the metal strip is prevented from protruding to the outside from a synthetic rubber applied in the subsequent step and the thickness of the synthetic rubber at such section is prevented from thinning.

Abstract: The present invention provides a method for manufacturing a photonic crystal fiber that has a core portion in which a fiber core extends in a lengthwise direction and is formed as a solid or a void, and a porous clad portion provided around the core portion and having numerous pores extending along the core portion. A preform is fabricated by packing numerous capillaries into a cylindrical support pipe such that they are parallel to the central axis of the support pipe and disposing a core rod to serve as the solid core portion at the central axis portion of the support pipe. The preform is drawn to make it small in diameter.