Various embodiments of the present disclosure are directed to offshore frame construction. In one example embodiment, an offshore frame construction is disclosed including structural members and a structural joint connecting the structural members. The structural joint includes a fork part, an ear part, and a pin, where the fork part and the ear part includes a bore, and the pin is inserted into the bore. The pin has a non-corroding surface that is a cladding or bushing welded or shrunk or glued or otherwise affixed to the pin which consists of a different material, or the non-corroding surface is continuous with the pin and the pin consists of the non-corroding material. In some specific embodiments, the bore includes a sliding surface, which is fitted with a liner acting as a bearing, and the bearing is an elastomeric bearing.

Systems and methods are disclosed for deterring wildlife, such as bats and birds, from drawing too proximate to an operating wind turbine. Wildlife species may be sensitive to transmitted frequencies, such as ultrasonic frequencies above the range of human hearing. For example, bats may avoid areas where ultrasonic frequencies are being emitted, either because the emitted ultrasonic frequency interferes with the echolocation of the bat, or because encountering the ultrasonic frequency is uncomfortable for the bat. In some aspects, acoustic transmitters may be arranged along a length of a blade of a wind turbine. A controller may direct the acoustical transmitters to transmit signals having ultrasonic frequencies to deter wildlife encounters. The controller may direct the transmitters to transmit only during periods where wildlife encounters are likely to occur (e.g. at night, during migration seasons, during favorable weather conditions, or the like).

Provided is a platform positioning system including a platform and an elevator, wherein a cabin of the elevator is movable along a wall segment of a building, wherein the platform positioning system further includes a first attachment mechanism for releasably attaching the platform to the cabin, wherein the motion of the cabin and the platform are coupled to each other when the platform is attached to the cabin, and a second attachment mechanism for releasably attaching the platform to the wall segment.

Systems and methods are disclosed for deterring wildlife, such as bats and birds, from drawing too proximate to an operating wind turbine. Wildlife species may be sensitive to transmitted frequencies, such as ultrasonic frequencies above the range of human hearing. For example, bats may avoid areas where ultrasonic frequencies are being emitted, either because the emitted ultrasonic frequency interferes with the echolocation of the bat, or because encountering the ultrasonic frequency is uncomfortable for the bat. In some aspects, acoustic transmitters may be arranged along a length of a blade of a wind turbine. A controller may direct the acoustical transmitters to transmit signals having ultrasonic frequencies to deter wildlife encounters. The controller may direct the transmitters to transmit only during periods where wildlife encounters are likely to occur (e.g. at night, during migration seasons, during favorable weather conditions, or the like).

Systems and methods are disclosed for deterring wildlife, such as bats and birds, from drawing too proximate to an operating wind turbine. Wildlife species may be sensitive to transmitted frequencies, such as ultrasonic frequencies above the range of human hearing. For example, bats may avoid areas where ultrasonic frequencies are being emitted, either because the emitted ultrasonic frequency interferes with the echolocation of the bat, or because encountering the ultrasonic frequency is uncomfortable for the bat. In some aspects, acoustic transmitters may be arranged along a length of a blade of a wind turbine. A controller may direct the acoustical transmitters to transmit signals having ultrasonic frequencies to deter wildlife encounters. The controller may direct the transmitters to transmit only during periods where wildlife encounters are likely to occur (e.g. at night, during migration seasons, during favorable weather conditions, or the like).

Various embodiments of the present disclosure are directed to offshore frame construction. In one example embodiment, an offshore frame construction is disclosed including structural members and a structural joint connecting the structural members. The structural joint includes a fork part, an ear part, and a pin, where the fork part and the ear part includes a bore, and the pin is inserted into the bore. The pin has a non-corroding surface that is a cladding or bushing welded or shrunk or glued or otherwise affixed to the pin which consists of a different material, or the non-corroding surface is continuous with the pin and the pin consists of the non-corroding material. In some specific embodiments, the bore includes a sliding surface, which is fitted with a liner acting as a bearing, and the bearing is an elastomeric bearing.

A washing machine includes: a cabinet; a tub; a pump case provided so as to drain washing water; a pump filter that filters foreign substances in washing water and is able to be detached from the pump case; and a pump filter head that is combined with one side of the pump filter and causes the pump filter to rotate, wherein the pump filter head includes: a first head having a first state in which the first head is engaged with one side of the pump case and is combined with the pump case and a second state in which the first head is released from the pump case; and a second head that is positioned at front of the first head and is rotatable separately from the first head in the first state. A user can recognize whether the pump filter is fully fastened to the pump case.

Provided is a platform positioning system including a platform and an elevator, wherein a cabin of the elevator is movable along a wall segment of a building, wherein the platform positioning system further includes a first attachment mechanism for releasably attaching the platform to the cabin, wherein the motion of the cabin and the platform are coupled to each other when the platform is attached to the cabin, and a second attachment mechanism for releasably attaching the platform to the wall segment.