An aircraft passenger seat construction capable of in-flight rocking motion and berthing, wherein rocking motion and berthing are mutually exclusive features. The seat construction includes a fixed frame including spaced frame members each having a support surface to be rocked on, a rocking frame including a seat pan and spaced rockers, the spaced rockers positioned to rock on the support surfaces, guides carried on the spaced rockers engaged to travel within guide slots of the spaced frame members, a backrest pivotally attached to the rocking frame, and a leg rest pivotally attached to the rocking frame. The rocking frame may rock back-and-forth in-flight or may be locked at any given position based on passenger preference. The seat construction is compatible with or without other seat adjustment mechanisms such as tracking, swivel, lie-flat and recline adjustment mechanisms.

A vehicle seat assembly includes a fixed mounting plate and a support bar coupled with the mounting plate and slidable with respect thereto along an arcuate path. A cushion support is coupled with the support bar, and a drive mechanism is operably coupled with the cushion support to rotate the cushion support about a center of the arcuate path positioned opposite the rail by sliding of the support bar along the path.

A support apparatus includes a base member, an intermediate member, an upper member, a pair of first rails provided at the base member, the pair of first rails extending in a first direction, and a pair of second rails provided at the upper member, the pair of second rails extending in a second direction orthogonal to the first direction. The intermediate member includes a pair of first rollers engaging with the first rails and a pair of second rollers engaging with the second rails. The intermediate member constitutes a first pendulum mechanism that allows an oscillation of the upper member in the first direction and a second pendulum mechanism that allows an oscillation of the upper member in the second direction. The intermediate member includes a first drive portion that drives the first rollers to rotate and a second drive portion that drives the second rollers to rotate.

A support apparatus includes a base member, an intermediate member, an upper member, a pair of first rails provided at the base member, the pair of first rails extending in a first direction, and a pair of second rails provided at the upper member, the pair of second rails extending in a second direction orthogonal to the first direction. The intermediate member includes a pair of first rollers engaging with the first rails and a pair of second rollers engaging with the second rails. The intermediate member constitutes a first pendulum mechanism that allows an oscillation of the upper member in the first direction and a second pendulum mechanism that allows an oscillation of the upper member in the second direction. The intermediate member includes a first drive portion that drives the first rollers to rotate and a second drive portion that drives the second rollers to rotate.

An aircraft passenger seat construction capable of in-flight rocking motion and berthing, wherein rocking motion and berthing are mutually exclusive features. The seat construction includes a fixed frame including spaced frame members each having a support surface to be rocked on, a rocking frame including a seat pan and spaced rockers, the spaced rockers positioned to rock on the support surfaces, guides carried on the spaced rockers engaged to travel within guide slots of the spaced frame members, a backrest pivotally attached to the rocking frame, and a leg rest pivotally attached to the rocking frame. The rocking frame may rock back-and-forth in-flight or may be locked at any given position based on passenger preference. The seat construction is compatible with or without other seat adjustment mechanisms such as tracking, swivel, lie-flat and recline adjustment mechanisms.

A working machine includes an operator's seat, a seat base supporting the operator's seat, and a slide rail for adjustment of a position of the operator's seat, the slide rail being located between the seat base and the operator's seat, in which the seat base includes a rail mount for attachment of the slide rail, the rail mount having a downward convex curve which is curved to deviate from the slide rail with increasing distance from each of opposite ends of the rail mount in a longitudinal direction of the slide rail and with decreasing distance to a center of the rail mount in the longitudinal direction.