A seat system for a passenger aircraft. The seat system includes a passenger seat frame having a backrest support assembly including a backrest and a spreaders and spar tube assembly; and a seat bottom support assembly. The seat system further includes a solenoid-actuated recline lever assembly including an armrest or center console connected to the spreaders and spar tube assembly; a counter-balanced solenoid actuator positioned in the seat bottom support assembly; and a passenger operated release switch attached between the solenoid actuator and the armrest or center console. The seat system may further include a seat back tray table attached to the back of the passenger seat frame.

The present invention relates to an aircraft seat comprising: a guide rail (26); a rack (34); an actuator (30) provided with a gear (31); at least one connection portion (35) providing a mechanical connection between the guide rail (26) and the rack (34),
characterized in that the connection portion (35) included a zone (36) of mechanical weakness and in that a first bearing element (37) and a second bearing element (38) are disposed on either side of the rack (34), such that, if the deformation of the seat generates a movement of the gear (31), said gear (31) or the corresponding shaft (32) comes into abutment against one of the bearing elements (37, 38) and in this way deforms the connection portion (35) along the zone (36) of mechanical weakness.

A rack is made from a plurality of laminated layers. Each layer defines an alignment feature that allows all of the layers to be affixed to a base plate of an aircraft seat assembly and align the teeth of the rack to within five ten-thousandths of an inch. The rack includes a straight portion and a curved portion such that a pinion gear on the aircraft seat assembly can move the aircraft seat assembly along tracks with straight and curved portions.

An actuating drive, in particular for seat adjustment devices, comprising at least one electric motor, a downstream reduction gear, a coupling device which has a coupling engagement spring that ensures an engaged position of the coupling device during motorized operation and permits a manual disengagement against its coupling force. The coupling device has a coupling lever pivotably mounted in a pivot bearing of a bearing block. The coupling lever is connected at one end of the pivot bearing to a mechanical actuating unit and by which at the other end of the pivot bearing a coupling means can be adjusted to disengage the coupling device. The actuating drive ensures both reliable electrical and reliable manual operation, a high degree of efficiency during electrical operation and simple assembly for a generic actuating drive.

An aircraft seat (10) comprising: a seat base (12) having a base support surface (22); an outer backrest (14) mounted to and extending upwardly from the seat base (12); an inner backrest (16) mounted to the outer backrest (14) and/or the seat base (12), the inner backrest (16) having a torso support surface (20) extending between a top end (26) and a bottom end (28) of the inner backrest (16) and being displaceable between a first position and a second position, wherein: when the inner backrest (16) is in the first position: the top end (26) of the inner backrest (16) is located adjacent to the outer backrest (14) and the bottom end (28) of the inner backrest (16) is located adjacent to the base support surface (22) of the seat base (12); and when the inner backrest (16) is in the second position: the top end (26) of the inner backrest (16) is located adjacent to the outer backrest (14) and the bottom end (28) of the inner backrest (16) is located adjacent to the base support surface (22) of the seat base (12), the top end (26) of the inner backrest (16) is located closer to the seat base (12) than when the inner backrest (16) is in the first position, and the bottom end (28) of the inner backrest (16) is located further away from the outer backrest (14) than when the inner backrest (16) is in the first position.

An aircraft seat device for an aircraft seat includes at least one mounting unit, having at least one seat bottom which is coupled with the mounting unit and is configured to implement a seating region and to this end has at least one main unit and at least one sub-unit that in relation to the mounting unit is implemented so as to be adjustable between a stowage position and a use position. The at least one adjustable sub-unit is configured for enlarging the seating region in at least one position, and having at least one actuation mechanism by means of which the adjustable sub-unit of the seat bottom is adjustable between its stowage position and its use position.

In embodiments, an aircraft passenger seat assembly includes a seatback assembly including one or more lateral seatback sections. In embodiments, at least one lateral seatback section includes a base seatback panel coupled to a seatback frame, a first set of segmented seatback panels coupled to the base seatback panel, and a second set of segmented seatback panels coupled to the first set of segmented seatback panels. In embodiments, the aircraft passenger seat assembly further includes a plurality of actuatable assemblies, wherein the plurality of actuatable assemblies include a first set of actuatable assemblies configured to selectively actuate the first set of segmented seatback panels relative to the base seatback panel, and a second set of actuatable assemblies configured to selectively actuate the second set of segmented seatback panels relative to the first set of segmented seatback panels.

A seat system includes a base support structure having at least one flat seat support surface, a seat pan support structure movably coupled to the base support structure and having at least one contoured seat support surface, and a back rest support structure movably coupled to the base support structure. The back rest support structure includes a primary frame having at least one flat back support surface, and an articulating frame movably coupled to the primary frame and having at least one contoured back support surface. The seat system also includes a back rest cushion having an occupant-facing back rest surface, and an articulating arrangement of back rest cushion support members movably coupled together to define a bottom surface of the back rest cushion opposing the occupant-facing back rest surface.

An aircraft seat includes an actuator and a movement transmission device. The transmission device includes a frame provided with an immobilizing portion and a drive shaft. The transmission device further includes a gear wheel provided with coupling teeth having inclined side walls and a sleeve with an immobilizing portion complementary to the immobilizing portion of the frame, and coupling teeth having inclined side walls. The transmission device also has an elastic member configured to push the sleeve. The stiffness of the elastic member and the inclination of the side walls of the coupling teeth of the gear wheel and sleeve are chosen such that, when a torque greater than a threshold torque is applied to the gear wheel, the sleeve slides on the drive shaft from a position of coupling the sleeve to the gear wheel to a position of immobilizing the sleeve relative to the frame.

An aircraft armrest lifting mechanism generally biases the aircraft armrest toward a raised configuration. A linear actuator applies tension to a cable connected to a portion of an armrest hub connected to an armrest shaft. The portion of the armrest hub extends some distance from the armrest shaft so that the linear actuator applies a moment between an attachment point on the armrest and the armrest shaft that tends to rotate the armrest toward a raised configuration.