Linearly deployable aircraft seat legrest

Patent metadata

Field	Value
Publication number	US-9499079-B2
Application number	US-201414517189-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Oct 21, 2013
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A legrest assembly adapted for use with an aircraft passenger seat including a pair of spaced parallel support members adapted to extend forward from the front of the seat, a legrest pivotally supported on ends of the support members configured to pivot from near vertical when stowed to near horizontal when deployed, a brake mechanism for stopping forward deployment of the legrest, and an actuator for driving forward deployment of the legrest.

First claim

What is claimed is:

1. A legrest assembly adapted for use with a passenger seat, comprising:
a pair of spaced parallel support members adapted to translate forward and aft relative to a pivoting seat pan;
a legrest pivotally attached on a backside thereof to forward ends of the pair of spaced parallel support members, the legrest configured to pivot relative to the pair of spaced parallel support members from near vertical when stowed to near horizontal when deployed;
a brake mechanism including a hook carrying a stopper arranged to brake one of the spaced parallel support members to hold the one of the spaced parallel support members at a desired extension position; and
an actuator arranged to drive forward deployment of the legrest.

2. The legrest assembly of claim 1 , wherein the pair of spaced parallel support members are adapted to translate forward through a front face of the pivoting seat pan.

3. The legrest assembly of claim 1 , wherein the pair of spaced parallel support members comprise cylindrical tubes arranged to slide along linear-motion bearings.

4. The legrest assembly of claim 1 , wherein the pair of spaced parallel support members comprise multi-section compound slides, and wherein a first section of each multi-section compound slide is attached to a seat frame or seat pan assembly of the passenger seat and a second section of each multi-section compound slide is pivotally attached to the backside of the legrest at positions inward of lateral sides of the legrest.

5. The legrest assembly of claim 1 , wherein the actuator is one of a linear actuator, a gas spring, and a cable and pulley mechanism.

6. The legrest assembly of claim 1 , wherein the actuator is a gas spring arranged between the pair of spaced parallel support members, wherein the actuator is attached at one end to a seat frame or seat pan assembly of the passenger seat and at an opposing end to the backside of the legrest, and wherein the actuator is loaded when the legrest is stowed and releases to deploy the legrest.

7. The legrest assembly of claim 1 , further comprising a legrest stabilizer arranged between the pair of spaced parallel support members and positioned near the backside of the legrest.

8. An aircraft passenger seat, comprising:
a seat frame supporting a seatback and a pivoting seat pan; and
a legrest assembly supported by the seat pan, the legrest assembly comprising:
a pair of spaced parallel support members adapted to translate forward and aft relative to the pivoting seat pan;
a legrest pivotally attached on a backside thereof to forward ends of the pair of spaced parallel support members, the legrest configured to pivot from near vertical when stowed to near horizontal when deployed;
a brake mechanism including a hook carrying a stopper arranged to brake one of the spaced parallel support members to hold the one of the spaced parallel support members at a desired extension position; and
an actuator for driving forward deployment of the pair of spaced parallel support members.

9. The aircraft passenger seat of claim 8 , wherein the pair of spaced parallel support members comprise cylindrical tubes arranged to slide along linear-motion bearings.

10. The aircraft passenger seat of claim 8 , wherein the pair of spaced parallel support members comprise multi-section compound slides, and wherein a first section of each multi-section compound slide is attached to a seat frame or seat pan assembly of the passenger seat and a second section of each multi-section compound slide is pivotally attached to the backside of the legrest.

11. The aircraft passenger seat of claim 8 , wherein the actuator is one of a linear actuator, a gas spring, and a cable and pulley mechanism.

12. The aircraft passenger seat of claim 8 , wherein the actuator is a gas spring arranged between the pair of spaced parallel support members, wherein the actuator is attached at one end to a seat frame or seat pan assembly of the passenger seat and at an opposing end to the backside of the legrest, and wherein the actuator is loaded when the legrest is stowed and releases to deploy the legrest.

13. The aircraft passenger seat of claim 8 , further comprising a legrest stabilizer arranged between the pair of spaced parallel support members and positioned near the backside of the legrest.

14. A legrest assembly deployable through a forward face of a pivoting seat pan of an aircraft seat, comprising:
a pair of spaced parallel support members adapted to translate forward and aft relative to the pivoting seat pan;
a legrest pivotally attached on a backside thereof to forward ends of the pair of spaced parallel support members, the legrest configured to pivot from near vertical when stowed to near horizontal when deployed and in use;
an actuator arranged to drive forward deployment of the legrest, wherein the actuator is loaded when the legrest is stowed and releases to deploy the legrest; and
a brake mechanism including a hook carrying a stopper arranged to brake one of the spaced parallel support members to hold the one of the spaced parallel support members at a desired extension position.

15. The legrest assembly of claim 14 , wherein the pair of spaced parallel support members comprise cylindrical tubes arranged to slide along linear-motion bearings.

16. The legrest assembly of claim 14 , wherein the pair of spaced parallel support members comprise multi-section compound slides, wherein a first section of each multi-section compound slide is attached to the seat pan and a second section of each multi-section compound slide is pivotally attached to the backside of the legrest.

17. The legrest assembly of claim 14 , wherein the actuator is one of a linear actuator, a gas spring, and a cable and pulley mechanism.

18. The legrest assembly of claim 14 , wherein the actuator is a gas spring arranged between the pair of spaced parallel support members, wherein the actuator is attached at one end to the seat pan and at an opposing end to the legrest.

19. The legrest assembly of claim 14 , further comprising a legrest stabilizer arranged between the pair of spaced parallel support members and positioned near the backside of the legrest.

Assignees

• Be Aerospace Inc

Inventors

• Meister Peter C
• Mahabaleshwara Aravinda

Classifications

• B60N2/4495

  Operations & Transport · mapped topic

• B64D11/0643

  Adjustable foot or leg rests · CPC title

• B64D11/0648

  Lower frame constructions · CPC title

• B60N2/62 Primary

  Thigh-rests {(B60N2/914 takes precedence)} · CPC title

• A47C7/506 Primary

  of adjustable type · CPC title