Backrest assembly

Abstract

A bracket assembly includes a backrest, a support and a fastener. The backrest defines a hole with a wall formed with a thread. The support is attached to a seat and defines a slot. The fastener includes a bolt formed with a thread and a head secured to the bolt. The bolt is inserted through the slot and the thread formed on the bolt is engaged with the thread formed on the wall of the hole in order to sandwich the support between the backrest and the head so as retain the backrest in position on the support. The engagement the thread formed on the bolt with the thread formed on the wall of the hole can be loosened so as allow adjustment of the position of the backrest on the support. In another aspect, the backrest includes a first panel and a second panel. The first panel defines a hole with a wall on which a thread is formed and a second panel. The second panel defines a hole. The support is located between the first panel and the second panel. The bolt is inserted through the hole defined in the second panel and the slot. The thread formed on the bolt is engaged with the thread formed on the wall of the hole defined in the first panel in order to sandwich the support between the first panel and the second panel so as retain the backrest in position on the support.

Dependencies are inferred from the claim text.