掛け布団の跳ねあげ動作自体も困難な非力な老人・重い障害を持つ人・病人等にとっても掛け布団の跳ねあげを自由に行うことを可能にし、また季節による寒暖の調整にも対応可能とすることにある。 To provide a device with which uncovering of a coverlet is freely made even for a powerless old man, a seriously disable person, a patient or the like who is difficult to uncover movement of a coverlet and temperature control according to the weather can also be made. - 特許庁