Abstract: Paper that has minute pores, denseness, a high degree of airtightness and is made from cellulose which has superior heat and chemical resistance and is reproducible natural resources. Further, a non-aqueous battery which is improved to a higher level with regards to various characteristics, e.g., heat resistance, electrical characteristics such as ion transmissivity or liquid-holding characteristics, or prevention of an internal short circuit, through use of, as a separator for electronically separating a positively active substance from a negatively active substance, a novel porous highly-airtightened separator which is made from cellulose and has pores and denseness. The separator is manufactured from highly-airtightened porous paper having minute pores made by forming wet paper web from minute cellulose having a fiber diameter of 1 &mgr;m or less, and drying the wet paper web while voids in the wet paper web are maintained. The separator is used in a non-aqueous battery or electrolytic capacitor.

Abstract: A drum brake device in which the brake shoe return smoothly when releasing the parking brake on a slope. The points of the circumferential edges of the linings 6, 6 of the brake shoes 2, 3 at the service brake actuator side are located on the normal radial line B passed through the point of abutment of shoe clearance adjustment device 12 with the brake shoes 2, 3 and the brake center or are located closer to the anchor 9 than the line B.