Passenger seat with variable living space

Patent metadata

Field	Value
Publication number	US-2020086995-A1
Application number	US-201716467328-A
Country	US
Kind code	A1
Filing date	Dec 6, 2017
Priority date	Dec 7, 2016
Publication date	Mar 19, 2020
Grant date	—

Abstract

A leg assembly for a passenger seat includes a base member (102), a leg (104B), and an adjuster (106). The leg includes an upper end (110) and a lower end (112). The upper end of the leg includes an aperture (126) configured to receive a base frame tube, and the lower end is pivotally connected to the base member such that the leg is pivotable forward and aft from a base position. The adjuster is configured to pivotally position the leg relative to the base member.

First claim

That which is claimed:

1 . A leg assembly for a passenger seat comprising;
a base member; a leg comprising an upper end and a lower end, wherein the upper end of the leg comprises an aperture configured to receive a base frame tube, and wherein the lower end is pivotally connected to the base member such that the leg is pivotable forward and aft from a base position; and an adjuster configured to pivotally position the leg relative to the base member.

2 . The leg assembly of claim 1 , wherein the base position is a vertical position, and the leg is pivotable forward and aft from greater than 0° to about 15° from the base position.

3 . The leg assembly of claim 1 , wherein the leg is an aft leg and the adjuster is connected to the base member and the aft leg, and wherein the leg assembly further comprises:
a forward leg comprising an upper end and a lower end, wherein the forward leg is pivotally connected to the base member such that the leg is pivotable forward and aft from a base position.

4 . The leg assembly of claim 1 , wherein the adjuster is a manually adjustable, and wherein the adjuster is configured to pivotally position the leg between preset positions.

5 . The leg assembly of claim 4 , wherein the adjuster comprises:
a first threaded rod comprising a clockwise thread and a first alignment hole; a second threaded rod comprising a counter-clockwise thread and a second alignment hole; a sleeve rotatably positioned on the first threaded rod and the second threaded rod and comprising a sleeve alignment holes; and a locking washer positioned on the first threaded rod or the second threaded rod, wherein a distance between an end of the first threaded rod and an end of the second threaded rod is adjustable through rotation of the sleeve, wherein the sleeve alignment hole is aligned with the first alignment hole or the second alignment hole in a preset position, and wherein the locking washer is configured to maintain a position of the sleeve relative to the first threaded rod and the second threaded rod in the preset position.

6 . The leg assembly of claim 1 , wherein the adjuster is automatically adjustable, and wherein the adjuster is configured to pivotally position the leg between preset positions.

7 . The leg assembly of claim 1 , wherein the upper end of the leg further comprises a stopping slot comprising a forward end and an aft end, and wherein the stopping slot extends transversely to the aperture.

8 . The leg assembly of claim 7 , further comprising a bearing rotatably positioned within the aperture, wherein the bearing comprises:
an inner surface configured to interface with the base frame tube; an outer surface interfaced with an aperture surface of the aperture such that the leg assembly is rotatable relative to the bearing; a stopping extension positioned within the stopping slot; and a fastener configured to secure the base frame tube to the bearing, wherein the stopping extension comprises a forward end and an aft end, wherein the forward end of the stopping extension is configured to interface with the forward end of the stopping slot in a forward-most position of the leg, wherein the aft end of the stopping extension is configured to interface with the aft end of the stopping slot in an aft-most position of the leg, and wherein the fastener extends transversely through the aperture and is connected to the forward end and the aft end of the stopping extension.

9 . A passenger seat comprising the leg assembly of claim 1 .

10 . The passenger seat of claim 9 , further comprising a backrest and a seat base, wherein the seat base comprises the base frame tube.

11 . A passenger seat comprising:
a seat base; and a leg assembly supporting the seat base and comprising:
a base member;
a leg comprising an upper end and a lower end, wherein the lower end is pivotally connected to the base member such that the leg is pivotable forward and aft from a base position; and
an adjuster configured to pivotally position the leg relative to the base member,
wherein the leg assembly is configured to adjust a living space of the passenger seat by pivotally positioning the leg relative to the base member.

12 . The passenger seat of claim 11 , wherein the base position is a vertical position, and wherein the leg is pivotable forward and aft from greater than 0° to about 15° from the base position.

13 . The passenger seat of claim 11 , wherein the leg is an aft leg and the adjuster is connected to the base member and the aft leg, and wherein the leg assembly further comprises:
a forward leg comprising an upper end and a lower end, wherein the forward leg is pivotally connected to the base member such that the leg is pivotable forward and aft from a base position.

14 . The passenger seat of claim 11 , wherein the upper end of the leg further comprises:
an aperture; and a stopping slot comprising a forward end and an aft end, wherein the stopping slot extends transversely to the aperture, and wherein a base frame tube of the seat base is positioned within the aperture.

15 . The passenger seat of claim 14 , further comprising a bearing rotatably positioned within the aperture, wherein the bearing comprises:
an inner surface interfaced with the base frame tube; an outer surface interfaced with an aperture surface of he aperture such that he leg assembly is rotatable relative to the bearing; a stopping extension positioned within the stopping slot; and a fastener configured to secure the base frame tube to the bearing, wherein the stopping extension comprises a forward end and an aft end, wherein the forward end of the stopping extension is configured to interface with the forward end of the stopping slot in a forward-most position of the leg, wherein the aft end of the stopping extension is configured to interface with the aft end of the stopping slot in an aft-most position of the leg, wherein the fastener extends transversely through the aperture, and wherein the fastener is connected to the forward end and the aft end of the stopping extension.

16 . A method of controlling a passenger seat arrangement comprising:
determining a desired living space of a passenger seat of the passenger seat arrangement; determining an actual living space of the passenger seat; and controlling the passenger seat such that the actual living space is the desired living space, wherein controlling the passenger seat comprises controlling an adjuster of a leg assembly and pivoting a leg of the leg assembly of the passenger seat relative to a base member of the leg assembly.

17 . The method of claim 16 , wherein controlling the passenger seat comprises pivoting the leg of the leg assembly in a forward direction.

18 . The method of claim 16 , wherein controlling the passenger seat comprises pivoting the leg of the leg assembly in and aft direction.

19 . The method of claim 16 , wherein controlling the passenger seat comprises pivoting the leg of the leg assembly relative to a base position of the leg.

20 . The method of claim 19 , wherein the base position is vertical, and wherein controlling the passenger seat comprises pivoting the leg of the leg assembly such that the actual living space is changed up to a predetermined amount in a forward direction or an aft direction from relative to the base position.

Assignees

• Safran Seats Usa Llc

Inventors

• Cheung Tak Fu

Classifications

• B64D11/0648 Primary

  Lower frame constructions · CPC title

• B60N2/045

  Longitudinal adjustment by means of articulated rods supporting the seat, e.g. parallelogram mechanisms (B60N2/38 takes precedence) · CPC title

• B64D11/064 Primary

  Adjustable inclination or position of seats · CPC title

• B64D11/0696

  Means for fastening seats to floors, e.g. to floor rails · CPC title

• B64D11/0639

  with features for adjustment or converting of seats · CPC title