Abstract: An article transport vehicle that travels along a traveling path is provided with an obstacle sensor that detects an obstacle that exists in a detection area, and a control unit that controls the traveling speed of the article transport vehicle based on detection information of the obstacle sensor. A non-detection area where detection of the obstacle by the obstacle sensor is not performed is set within the detectable area of the obstacle sensor, and a situation in which the non-detection area exists on a detection line that joins a part of the detection area and the obstacle sensor is defined as a specific situation. The control unit, in the specific situation, and a situation where an undetectable area in which it is not possible to detect the obstacle exists in the detection area because a shield exists in the non-detection area, reduces the speed of the article transport vehicle to a second traveling speed slower than the first traveling speed.

Abstract: A fire door includes: an outer frame; a door body; and a center rail, the center rail is provided so as to overlap a target area in a wall orthogonal direction view, and so as to extend in a width direction between a first frame portion and a second frame portion on the side opposite to the wall body with respect to the target area, the center rail and the first frame portion are fixed to each other, the center rail and the second frame portion are engaged with each other with an engaging mechanism interposed therebetween, and the engaging mechanism is configured to allow relative movement of the center rail relative to the second frame portion in the width direction, and to regulate the relative movement thereof in the wall orthogonal direction and a slide direction.

Abstract: A fire door includes: an outer frame; a door body; and a center rail, the center rail is provided so as to overlap a target area in a wall orthogonal direction view, and so as to extend in a width direction between a first frame portion and a second frame portion on the side opposite to the wall body with respect to the target area, the center rail and the first frame portion are fixed to each other, the center rail and the second frame portion are engaged with each other with an engaging mechanism interposed therebetween, and the engaging mechanism is configured to allow relative movement of the center rail relative to the second frame portion in the width direction, and to regulate the relative movement thereof in the wall orthogonal direction and a slide direction.

Abstract: An article transport vehicle that travels along a traveling path is provided with an obstacle sensor that detects an obstacle that exists in a detection area, and a control unit that controls the traveling speed of the article transport vehicle based on detection information of the obstacle sensor. A non-detection area where detection of the obstacle by the obstacle sensor is not performed is set within the detectable area of the obstacle sensor, and a situation in which the non-detection area exists on a detection line that joins a part of the detection area and the obstacle sensor is defined as a specific situation. The control unit, in the specific situation, and a situation where an undetectable area in which it is not possible to detect the obstacle exists in the detection area because a shield exists in the non-detection area, reduces the speed of the article transport vehicle to a second traveling speed slower than the first traveling speed.

Abstract: A sliding fire door is disclosed with an improved tightness of the closure by the door main body. The sliding fire door includes an opening frame, a fire door, and a guiding mechanism. The guiding mechanism includes a guide roller group which includes a plurality of guide rollers arranged one adjacent to another along the slide direction and which is configured to guide the door main body. The guiding mechanism is configured to guide the door main body such that the door main body is moved from an opening position to a closing position. The door main body has a first opposing surface which is oriented toward the wall. The opening frame has a second opposing surface which is oriented toward the first opposing surface of the door main body in the closing position. The guiding mechanism moves the door main body to cause the first opposing surface to be moved closer to the second opposing surface when the door main body is moved from the opening position to the closing position.

Abstract: A sliding fire door is disclosed with an improved tightness of the closure by the door main body. The sliding fire door includes an opening frame, a fire door, and a guiding mechanism. The guiding mechanism includes a guide roller group which includes a plurality of guide rollers arranged one adjacent to another along the slide direction and which is configured to guide the door main body. The guiding mechanism is configured to guide the door main body such that the door main body is moved from an opening position to a closing position. The door main body has a first opposing surface which is oriented toward the wall. The opening frame has a second opposing surface which is oriented toward the first opposing surface of the door main body in the closing position. The guiding mechanism moves the door main body to cause the first opposing surface to be moved closer to the second opposing surface when the door main body is moved from the opening position to the closing position.

Abstract: A power window device includes a driving unit which moves a plurality of window glasses of a vehicle respectively, an operation unit which has a plurality of switches corresponding to the plurality of window glasses and which is provided for driving the driving unit, and a control unit which controls the driving unit to move and open or close the window glasses in accordance with an operation on the operation unit. When a normal operation for operating any one of the plurality of window switches individually is performed, the control unit controls the driving unit to move only the window glass corresponding to the operated window switch. When a special operation which is different from the normal operation is performed on the window switches, the control unit controls the driving unit to move all the window glasses.

Abstract: A support member includes a first positioning portion for properly positioning a small container, and a second positioning portion for properly positioning a large container. The first positioning portion includes one or more first support members for supporting the small container, and first engaging members for engaging first engaged portions. The second positioning portion includes one or more second support members for supporting the large container at a height at which the bottom surface of the large container is located at a higher position than the upper ends of the first engaging members, a second engaging member provided outside the first supporting area for engaging a second engaged portion, and one or more contact members provided outside the first supporting area for contacting the large container from one or more sides.

Abstract: A support member includes a first positioning portion for properly positioning a small container, and a second positioning portion for properly positioning a large container. The first positioning portion includes one or more first support members for supporting the small container, and first engaging members for engaging first engaged portions. The second positioning portion includes one or more second support members for supporting the large container at a height at which the bottom surface of the large container is located at a higher position than the upper ends of the first engaging members, a second engaging member provided outside the first supporting area for engaging a second engaged portion, and one or more contact members provided outside the first supporting area for contacting the large container from one or more sides.

Abstract: A fluorite having all the more excellent laser durability compared to a conventional fluorite is provided. A fluorite is proposed, in which the standard deviation of the surface areas of the Voronoi regions in a diagram from a Voronoi decomposition of the distribution of etch-pits in the (111) plane is 6,000 ?m2 or less, or, in which the standard deviation of the distances of the Delaunay edges in a diagram from a Delaunay decomposition of the distribution of etch-pits of the (111) plane is 80 ?m or less.

Abstract: A power window device includes a driving unit which moves a plurality of window glasses of a vehicle respectively, an operation unit which has a plurality of switches corresponding to the plurality of window glasses and which is provided for driving the driving unit, and a control unit which controls the driving unit to move and open or close the window glasses in accordance with an operation on the operation unit. When a normal operation for operating any one of the plurality of window switches individually is performed, the control unit controls the driving unit to move only the window glass corresponding to the operated window switch. When a special operation which is different from the normal operation is performed on the window switches, the control unit controls the driving unit to move all the window glasses.

Abstract: A fluorite with excellent laser durability is provided by devising a heat-treatment method for CaF2 crystal. A fluorite production method is proposed, wherein heat-treatment is carried out by providing, through compartment walls in the periphery of a fluorite crystal, a fluoride gas trap layer containing a fluoride gas-adsorbing material.

Abstract: A fluorite having all the more excellent laser durability compared to a conventional fluorite is provided. A fluorite is proposed, in which the standard deviation of the surface areas of the Voronoi regions in a diagram from a Voronoi segmentation of the distribution of etch-pits in the (111) plane is 6,000 ?m2 or less, or, in which the standard deviation of the distances of the Delaunay edges in a diagram from a Delaunay segmentation of the distribution of etch-pits of the (111) plane is 80 ?m or less.

Abstract: A fluorite having all the more excellent laser durability compared to a conventional fluorite is provided. A fluorite is proposed, in which the standard deviation of the surface areas of the Voronoi regions in a diagram from a Voronoi decomposition of the distribution of etch-pits in the (111) plane is 6,000 ?m2 or less, or, in which the standard deviation of the distances of the Delaunay edges in a diagram from a Delaunay decomposition of the distribution of etch-pits of the (111) plane is 80 ?m or less.

Abstract: A fluorite having all the more excellent laser durability compared to a conventional fluorite is provided. A fluorite is proposed, in which the standard deviation of the surface areas of the Voronoi regions in a diagram from a Voronoi decomposition of the distribution of etch-pits in the (111) plane is 6,000 ?m2 or less, or, in which the standard deviation of the distances of the Delaunay edges in a diagram from a Delaunay decomposition of the distribution of etch-pits of the (111) plane is 80 ?m or less.

Abstract: A fluorite with excellent laser durability is provided by devising a heat-treatment method for CaF2 crystal. A fluorite production method is proposed, wherein heat-treatment is carried out by providing, through compartment walls in the periphery of a fluorite crystal, a fluoride gas trap layer containing a fluoride gas-adsorbing material.