A vehicle seat includes a back frame connected to a base member so as to be able to rotate around a first rotation shaft; a rotation locking mechanism; a cushion frame connected to the back frame so as to be able to rotate around a second rotation shaft, and in which a long hole is formed; a link member connected to the base member so as to be able to rotate around a third rotation shaft; a fourth rotation shaft fixed to the link member and inserted in the long hole so as to be able to move relatively and so as to be able to rotate; and movement restricting portion provided between the fourth rotation shaft and an inner surface of the long hole, and that restricts movement of the fourth rotation shaft from one end portion of the long hole toward another end portion side.

A vehicle seat includes a back frame connected to a base member so as to be able to rotate around a first rotation shaft; a rotation locking mechanism; a cushion frame connected to the back frame so as to be able to rotate around a second rotation shaft, and in which a long hole is formed; a link member connected to the base member so as to be able to rotate around a third rotation shaft; a fourth rotation shaft fixed to the link member and inserted in the long hole so as to be able to move relatively and so as to be able to rotate; and movement restricting portion provided between the fourth rotation shaft and an inner surface of the long hole, and that restricts movement of the fourth rotation shaft from one end portion of the long hole toward another end portion side.

A seat assembly is provided which is mountable to a vehicle to be rotatable from a forward facing passenger use position to a lateral stowed position which requires less vehicular floor space. That seat assembly can be installed adjacent to a second forward facing seat assembly having hinged seat bottom structure which provides a wheelchair backstop/support when the second seat assembly is not occupied by any passenger. The first and second seating assembly can be mounted in a public transportation bus within the ADA area of the bus, either as a floorplan module or as separate components. The first seating assembly alone or in combination with the second seating assembly can be mounted in other vehicles, such as Class B motorhomes (as defined by the Recreational Vehicle Industry Association), to provide greater versatility and/or wheelchair accommodation. The aesthetic design is established to support passenger general approval of the overall floorplan orientation.

A swivel plate assembly is provided that comprises a first swivel plate coupled to a second swivel plate. Each of the first and second swivel plates includes a first portion and a second portion. A channel is defined by the first swivel plate and the second swivel plate. A ball bearing assembly is positioned within the channel. A ball bearing of the ball bearing assembly is positioned substantially flush with the first and second swivel plates.

A seating assembly includes a frame that has an upper portion that defines an attachment aperture and a lower portion. A bracket is coupled to the lower portion. A cable has a first end and a second end that is coupled to the bracket. The cable is operable between a support position and a compressed position. A guide-sleeve is operably coupled with the cable and is disposed within the attachment aperture of the upper portion of the frame. The guide-sleeve includes retention tabs that are operably coupled to the upper portion.

A method for drilling a subterranean wellbore includes deploying a drill string in the wellbore, the drill string including a drill bit and a steerable drilling motor. The drill string is automatically rotated at the surface back and forth between first and second opposing rotational directions, rotating in the first direction until a first torque limit is exceeded and rotating in the second direction until a second torque limit is exceeded. A toolface of the steerable drilling motor and a differential pressure across the steerable drilling motor are measured while automatically rotating the drill string. A surface processor processes the measured toolface and differential pressure in combination with a target toolface and a target differential pressure to compute new first and second torque limits. The automatic rotating is repeated using the new first and second torque limits.

A swivel plate assembly is provided that comprises a first swivel plate coupled to a second swivel plate. Each of the first and second swivel plates includes a first portion and a second portion. A channel is defined by the first swivel plate and the second swivel plate. A ball bearing assembly is positioned within the channel. A ball bearing of the ball bearing assembly is positioned substantially flush with the first and second swivel plates.

A jump seat assembly is provided having a seating panel which is cushioned on one side and provides a hard surface on the other side. The panel is configured so that it is supported by a seating surface support and the panel can be reversed to provide a cushioned seating surface and in the alternative, a hard surface to allow a person to stand on the panel. A backrest is provided for when the cushioned surface is facing upward to allow the jump seat to function as a seat. The backrest can be pivoted away.

A swivel plate assembly is provided that comprises a first swivel plate coupled to a second swivel plate. Each of the first and second swivel plates includes a first portion and a second portion. A channel is defined by the first swivel plate and the second swivel plate. A ball bearing assembly is positioned within the channel. A ball bearing of the ball bearing assembly is positioned substantially flush with the first and second swivel plates.

A collapsible seat assembly includes one or more pneumatic bladder members providing, in an inflated state, at least a base portion and a seatback portion of the collapsible seat assembly, and a plurality of internal rigid frame members disposed at least partially within the one or more pneumatic bladder members. At least a portion of the one or more pneumatic bladder members can attach to at least a portion of the plurality of internal rigid frame members to provide a support for the one or more pneumatic bladder members.