Sikoshi tepu.Ọdun 1928 ni Richard Drew ṣe ni St. Paul, Minnesota.Teepu alemora ni ibamu si ipa rẹ ni a le pin si: teepu alemora iwọn otutu ti o ga, teepu alemora apa meji, teepu alemora idabobo, teepu alemora pataki, teepu alemora titẹ titẹ, teepu alemora gige gige, ipa ti o yatọ fun awọn aini ile-iṣẹ oriṣiriṣi.