Provided is a tilt arm for a seat that is applied to a vehicle seat and that moves in a pivoting manner when changing an angle of inclination of a front end portion of a cushion pad. The tilt arm includes a coupling arm portion pivotably coupled to a side frame of a cushion frame, and a leading-end-side arm portion coupled and fixed to a leading end portion of the coupling arm portion. A sectional shape of a fixed portion, where the coupling arm portion and the leading-end-side arm portion are coupled and fixed to each other, is a closed sectional shape formed by a closed curve. A sectional shape of the coupling arm portion at the fixed portion and a sectional shape of the leading-end-side arm portion at the fixed portion are each an open sectional shape that is partially opened.

A single-stage gear reduction output mechanism for an automotive seat assembly including a gear housing bracket, gear housing, axle shaft, eccentric, and first and second gears. The axle shaft extends through the eccentric with a slip fit, the first gear rotates with the axle shaft, and the second gear is carried on a first bearing surface of the eccentric and meshingly engages the first gear in a planetary arrangement. A locking plate including first, second, and third slot cutouts is disposed within the gear housing. A support pin extends from the gear housing through the first slot cutout and a second bearing surface of the eccentric extends through the second slot cutout to support the locking plate and limit its movement along a lateral axis. The second gear includes a first pin that extends through the third slot cutout to prevent the first gear from back-driving the second gear.

The disclosed embodiments relate to an aircraft having an in-flight leveling system for a seat onboard the aircraft that includes a swivel mechanism providing selective rotational movement of the a rear portion of the seat to compensate for an angle of inclination of the aircraft during flight. A locking mechanism is coupled to the swivel mechanism to retain the seat in a first position for use on the ground and a second position for use during flight. An actuator moves the locking mechanism between a locked condition and an unlocked condition permitting the seat to move between the first position to the second position enabling the seat to be substantially level when the aircraft is on the ground and during flight.

A seat assembly for a vehicle including a base presenting a pair of opposing angular surfaces spaced from one another and a cushion slidably engaging the opposing angular surfaces for tilting relative to the base into alternate orientations. The seat also includes a resistance element for maintaining the cushion in a desired orientation relative to the base. The cushion includes a sliding element which is movable between a disengaged position for adjusting the orientation of the cushion within predetermined limits established by the angular surfaces and an engaged position where the sliding element interfaces with the resistance element to restrict movement of the cushion relative to the base.

A single-stage gear reduction output mechanism for an automotive seat assembly including a gear housing bracket, gear housing, axle shaft, eccentric, and first and second gears. The axle shaft extends through the eccentric with a slip fit, the first gear rotates with the axle shaft, and the second gear is carried on a first bearing surface of the eccentric and meshingly engages the first gear in a planetary arrangement. A locking plate including first, second, and third slot cutouts is disposed within the gear housing. A support pin extends from the gear housing through the first slot cutout and a second bearing surface of the eccentric extends through the second slot cutout to support the locking plate and limit its movement along a lateral axis. The second gear includes a first pin that extends through the third slot cutout to prevent the first gear from back-driving the second gear.

A single-stage gear reduction output mechanism for an automotive seat assembly includes a gear housing bracket, gear housing, axle shaft, eccentric, and first and second gears. The axle shaft extends through the eccentric with a slip fit, the first gear rotates with the axle shaft, and the second gear is carried on a first bearing surface of the eccentric and meshingly engages the first gear in a planetary arrangement. The second gear includes an external flange with at least two guide holes. First and second support pins that are rigidly fixed in place relative to the axle shaft extend through the two guide holes in the external flange of the second gear. Forces acting at the interfaces between the first and second support pins and the two guide holes and between the eccentric and the second gear prevent the first gear from back-driving rotation of the second gear.

In a preferred embodiment, a tilt-recline force adjusting apparatus for an aircraft passenger seat configured for a tilt-recline positioning includes a first spring having a first axis to urge a seat back into an upright position, the first spring arranged to compress as the seat is manually reclined, a helper spring having a second axis parallel to the first axis, the helper spring arranged to assist or counteract the first spring, an adjustment mechanism coupled to the helper spring to increase or decrease a force exerted by the helper spring to assist or counteract the first spring, and a weight sensing mechanism coupled to the adjustment mechanism and operable to actuate the adjustment mechanism in direct proportion to a weight of a seated passenger, whereby the force exerted on the aircraft seat to urge the seat back into an upright position is greater for a heavier seated passenger

A vehicle seat having a seat bottom comprising a ramp and a stop, a slide comprising a first slide segment and a second slide segment, a movable element capable of being moved relative to the slide, the seat bottom being pivotally mounted relative to the movable element about a pivot axis, an articulation member that is stationary relative to the slide member, and a pivoting connecting rod having a first end that is articulated to the articulation member and a second end able to slide against the ramp during the movement of the movable element on the first slide segment, the pivoting connecting rod being shaped to push against the ramp and cause the rotation of the seat bottom during the movement of the movable element on the second slide segment, the second end of the connecting rod bearing against the stop.

A lifting mechanism for a seat, a seat, and a vehicle. The lifting mechanism for the seat includes a fixing frame, a seat frame including a front end rotatably connected to the fixing frame; and a drive assembly installed to the fixing frame and configured to drive the seat frame to rotate around the front end.

Provided is a seat having improved rigidity. The seat includes: a first side frame; a second side frame, a connection body; a base member; a first drive-side link; a second drive-side link, an actuator that generates a force for changing an angle between the first drive-side link and the second drive-side link; a first driven-side link that is fixed on the second side frame side of the connection body and rotates integrally with the connection body; a second driven-side link whose first end side is rotatably connected to a second end side of the first driven-side link and whose second end side is rotatably connected to a base member; and a transmission mechanism that mechanically transmits, when a force for rotating the second driven-side link about a connection part between the second driven-side link and the base member acts on the second driven-side link, the force to the connection body.