Abstract: A transmission system is equipped with rotating member(s) and a shaft member upon which the rotating member(s) is/are carried. A projecting support portion projecting inwardly and supporting the shaft member is formed in the casing of the transmission system with at least a part of the projecting support portion dipping into the lubricating oil in the casing, and the specific gravity of the projecting support portion being set to be lower than that of the lubricating oil.

Abstract: A waterproof housing is provided with an engaging member that can engage with rotary members provided respectively on a plurality of cameras. The rotary members can be rotated from the outside of the waterproof housing. Accordingly, the plurality of cameras can be stored and operated selectively in a single waterproof housing. For example, the engaging member can be configured in such a manner that a plurality of multiple recessed portions are provided concentrically so that each one of the plurality of rotary members can be fitted to any one of the recessed portion out of the multiple recessed portions.

Abstract: A waterproof housing is provided with an engaging member that can engage with rotary members provided respectively on a plurality of cameras. The rotary members can be rotated from the outside of the waterproof housing. Accordingly, the plurality of cameras can be stored and operated selectively in a single waterproof housing. For example, the engaging member can be configured in such a manner that a plurality of multiple recessed portions are provided concentrically so that each one of the plurality of rotary members can be fitted to any one of the recessed portion out of the multiple recessed portions.

Abstract: A waterproof housing is provided with an engaging member that can engage with rotary members provided respectively on a plurality of cameras. The rotary members can be rotated from the outside of the waterproof housing. Accordingly, the plurality of cameras can be stored and operated selectively in a single waterproof housing. For example, the engaging member can be configured in such a manner that a plurality of multiple recessed portions are provided concentrically so that each one of the plurality of rotary members can be fitted to any one of the recessed portion out of the multiple recessed portions.

Abstract: A transmission system is equipped with rotating member(s) and a shaft member upon which the rotating member(s) is/are carried. A projecting support portion projecting inwardly and supporting the shaft member is formed in the casing of the transmission system with at least a part of the projecting support portion dipping into the lubricating oil in the casing, and the specific gravity of the projecting support portion being set to be lower than that of the lubricating oil.

Abstract: A system includes a plurality of cameras and a waterproof housing. The plurality of cameras include a first camera including a first operating member, a second camera including a second operating member which is superposed to the position of the first operating member in the waterproof housing upon storing the second camera in the waterproof housing. The waterproof housing can store whichever one of the first camera and the second camera. The waterproof housing includes a third operating member and a fourth operating member. The third operating member operates the first operating member upon storing the first camera in the waterproof housing, and the fourth operating member operates the second operating member upon storing the second camera.

Abstract: A waterproof protector system comprises a body protector which stores a camera body, a first port member to be attached to the body protector, and a second port member to be attached to the first port member. The body protector is formed having a first opening portion. The first port member has a second opening portion to be fitted in the first opening portion, a third opening portion larger in diameter than the second opening portion, and a conical barrel portion formed between the second opening portion and the third opening portion. The first port member houses an accessory member, such as a wide-conversion lens. The second port member has a fourth opening portion, fittable in the third opening portion, and a light transmitting portion.

Abstract: A waterproof housing is provided with an engaging member that can engage with rotary members provided respectively on a plurality of cameras. The rotary members can be rotated from the outside of the waterproof housing. Accordingly, the plurality of cameras can be stored and operated selectively in a single waterproof housing. For example, the engaging member can be configured in such a manner that a plurality of multiple recessed portions are provided concentrically so that each one of the plurality of rotary members can be fitted to any one of the recessed portion out of the multiple recessed portions.

Abstract: In a waterproof housing for storing a camera, a transparent window for causing light to be refracted toward a nearer side is provided on at least part of a portion that covers a front surface of the camera. Accordingly, a direction of travel of light from the camera is bent toward an optical axis of a photographic lens, and hence a photographic subject can easily get light. The light is, for example, auxiliary light used for automatic focusing.

Abstract: A system has a camera and a waterproof housing. The camera has a strobe light-emitting portion which is rotated to the pop-up position for light emission and to the restoring position for non light-emission position and a light-emission preparing member which moves the strobe light-emitting portion from the restoring position to the pop-up position. The waterproof housing can be closed and opened and watertightly stores the camera. Further, the waterproof housing has an operating member which can externally be operated and a press member. In the waterproof housing, the light-emission preparing member on the camera is pressed by pressing the operating member and the strobe light-emitting portion at the restoring position is moved to the pop-up position. The rear portion of the strobe light-emitting portion at the pop-up position is pressed by pressing the press member, thus to move the strobe light-emitting portion to the restoring position.

Abstract: A system has a camera and a waterproof housing. The camera has a strobe light-emitting portion which is rotated to the pop-up position for light emission and to the restoring position for non light-emission position and a light-emission preparing member which moves the strobe light-emitting portion from the restoring position to the pop-up position. The waterproof housing can be closed and opened and watertightly stores the camera. Further, the waterproof housing has an operating member which can externally be operated and a press member. In the waterproof housing, the light-emission preparing member on the camera is pressed by pressing the operating member and the strobe light-emitting portion at the restoring position is moved to the pop-up position. The rear portion of the strobe light-emitting portion at the pop-up position is pressed by pressing the press member, thus to move the strobe light-emitting portion to the restoring position.

Abstract: A system includes a plurality of cameras and a waterproof housing. The plurality of cameras include a first camera including a first operating member, a second camera including a second operating member which is superposed to the position of the first operating member in the waterproof housing upon storing the second camera in the waterproof housing. The waterproof housing can store whichever one of the first camera and the second camera. The waterproof housing includes a third operating member and a fourth operating member. The third operating member operates the first operating member upon storing the first camera in the waterproof housing, and the fourth operating member operates the second operating member upon storing the second camera.

Abstract: A waterproof protector system comprises a body protector which stores a camera body, a first port member to be attached to the body protector, and a second port member to be attached to the first port member. The body protector is formed having a first opening portion. The first port member has a second opening portion to be fitted in the first opening portion, a third opening portion larger in diameter than the second opening portion, and a conical barrel portion formed between the second opening portion and the third opening portion. The first port member houses an accessory member, such as a wide-conversion lens. The second port member has a fourth opening portion, fittable in the third opening portion, and a light transmitting portion.

Abstract: A storage portion is provided in a body protector that has a waterproof space for storing a camera. A shoe cover that is removed from a hot shoe of the camera is put away into the storage portion. The storage portion is formed in a corner of the box-shaped waterproof space in the body protector. The shoe cover can be inserted into and removed from the storage portion in the optical axis direction of a camera lens.

Abstract: A domed structure having a retractable roof comprises a field area obtained by digging out a hollow, substantially concave in section, in the ground and levelling the bottom of the hollow seats for the spectators are provided by extending an upward slope outwardly from the end of the field area in an endless manner, and a movable roof element is movably mounted on a rail element laid out on the ground adjacent to the peripheral edge of said hollow. The movable roof element includes a driving arrangement to be placed on the rail element. The rail element may be tilted with a gradient rising toward the direction of solar radiation.

Abstract: A domed structure having a retractable roof comprises an inside field area, a ringed structure vertically provided around said field area, two tracks laid out on the top of said ringed structure and two movable semi-vaults travelling separately on said two annular tracks, which are put one over the other when the roof is opened and are located in opposite relation to each other when the roof is formed, thereby providing a domed roof as a whole. The annular tracks laid out on the top of said ringed structure may have a gradient rising with respect to the direction of solar radiation.