Abstract: A locking pivot device can include a base, a stop ring, and a shuttle. The stop ring can be supported within the base. The stop ring can include stops formed by an inset in an inner perimeter of the stop ring. The stop ring can also include teeth formed in a different portion of the inner perimeter from the stops. The shuttle can be received in the base. The shuttle can include at least one tooth selectively engageable with the teeth of the stop ring to selectively lock the stop ring at different positions. The shuttle can further include lateral surfaces engagable with the stops to define a predetermined range of motion of the stop ring within the base.

Abstract: A push button buckle (20) having a replaceable cover (30). A button (38) is biased into contact with the cover (30) to aid in installation. The cover (30) flexes to snap onto the frame (50), and is removed with a tool (T).

Abstract: A push button buckle (20) having a replaceable cover (30). A button (38) is biased into contact with the cover (30) to aid in installation. The cover (30) flexes to snap onto the frame (50), and is removed with a tool (T).

Abstract: An anterior trunk support. The anterior trunk support is shaped like a vest and is formed of non-stretch or limited stretch material over a lower portion that extends over the upper belly and lower ribs of a user, and stretch material that extends from the non-stretch material to over the shoulders of the user. In this manner, a wearer may lean slightly forward, with the stretchable shoulder portion flexibly permitting such movement. The lower section may be stretchable in a width dimension only. As such, the lower section provides movement for user's respiration, thus providing additional comfort. By not stretching in the vertical direction, the anterior trunk support does not slide up the wearer's chest when tension is applied to the upper stretchable material. Thus, comfort is maintained, and the lower section does not approach the neck of the user.