Abstract: A scraping device includes: a scraping part that comes into contact with a rotating contact part to scrape off attached matter attached to the contact part; a rotation part that rotates; and an applying part that is attached to the rotation part, rotates with the rotation part, and strikes the scraping part to apply an impact to the scraping part.

Abstract: A roller support device includes a roller including a cylindrical portion having a through hole, a support member attached to a portion of an outer peripheral surface of the roller adjacent to the through hole to support the roller so that the roller is rotatable, and a restricting member including a bent hook and a contact portion. The restricting member restrains the support member from moving in a first direction of a rotation axis of the roller by contacting the support member at the contact portion. The bent hook is bent so as to extend to an inside of the cylindrical portion through the through hole and oppose a portion of the inner peripheral surface surrounding the through hole. The contact portion is disposed so as to extend in a circumferential direction of an outer peripheral surface of the roller and being capable of contacting the support member.

Abstract: A roller support device includes a roller including a cylindrical portion having a through hole, a support member attached to a portion of an outer peripheral surface of the roller adjacent to the through hole to support the roller so that the roller is rotatable, and a restricting member including a bent hook and a contact portion. The restricting member restrains the support member from moving in a first direction of a rotation axis of the roller by contacting the support member at the contact portion. The bent hook is bent so as to extend to an inside of the cylindrical portion through the through hole and oppose a portion of the inner peripheral surface surrounding the through hole. The contact portion is disposed so as to extend in a circumferential direction of an outer peripheral surface of the roller and being capable of contacting the support member.

Abstract: In an automatic transmission, a small-capacity second clutch that does not engage for reverse drive is mounted forward of a counter drive gear, and the other engaging elements of relatively larger capacity, that is, first and third clutches and first to third brakes, are disposed rearward of the counter drive gear, so that an axially extending space is formed between the counter drive gear and the second clutch, which space is utilized to accommodate a parking gear. Such an arrangement of engaging elements allows the counter shaft to be placed closer to the input shaft without the parking gear interfering with the second clutch, thereby enabling a more compact automatic transmission. Furthermore, since there is no need to relocate the counter drive gear rearward, the length of the counter shaft can be reduced, thereby enabling still greater compactness.