Retractable armrest for an aircraft seat

• US 5,795,025 A
• Filed: 08/30/1996
• Issued: 08/18/1998
• Est. Priority Date: 08/30/1996
• Status: Expired due to Term

• Current Assignee: B/E Aerospace, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Aircraft Modular Products, Inc.
• Inventors: Murphy, Patrick
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): BARFIELD, ANTHONY DERRELL
• Application Number:
  US08/708,029
• Time in Patent Office: 718 Days
• Field of Search: 297/411.36, 297/411.35, 297/411.3, 297/411.31, 297/410, 297/115, 297/188.16 R
• US Class Current: 297/411.36
• CPC Class Codes: B60N 2/753 movable to an inoperative position
• CPC Class Codes: B60N 2/77 Height adjustment

Abstract

An improved, retractable armrest for an aircraft seat having a mount assembly being fixedly secured to a frame of the aircraft seat and a retraction assembly structured to move along a path in a generally vertical plane relative to the mount assembly and the aircraft seat. The retraction assembly includes a generally horizontal support with at least one guide element extending downwardly therefrom to engage a guide member of the mount assembly and guide vertical movement of the retraction assembly between an extended position and a retracted position. The retraction assembly is structured to lock for securely maintaining the retraction assembly in the extended position, while being capable of being released by a gentle yet focused lifting force being applied to the retraction assembly when in the extended position. Further, the retraction assembly is structured such that a slight, momentary upward movement does not cause an accidental release thereof from the extended position, such as might otherwise occur when a passenger manipulates one or more various controls located on the armrest for activating other comfort features on the aircraft seat.

Claims

1. An improved, retractable armrest for an aircraft seat of the type including a frame, said improved, retractable armrest comprising:

a mount assembly, said mount assembly being adapted to be fixedly secured to the frame of the aircraft seat,

said mount assembly including at least one guide member,

a retraction assembly, aid retraction assembly including a generally horizontal support structured to generally define an upper support surface,

said retraction assemble further including at least one guide element structured to b slidably engaged with said guide member of said mount assembly so as to guide generally vertical movement of said retraction assembly relative to said mount assembly between an extended position and a retracted position,

lock means for locking said retraction assembly in said extended position, said lock means being releasable so as to permit movement of said retraction assembly into said retracted position upon a gentle but affirmative lifting force being applied to said retraction assembly when in said extended position,

retraction resistance means for resisting a slight, momentary upward movement of aid retraction assembly from said extended position so as to prevent accidental release of said lock means, while still permitting facilitated release of said lock means, and

said lock means comprising;

a lock rod pivotally secured to said retraction assembly and structured and disposed to extend towards said mount assembly,

a retention segment protruding outwardly from generally a lower end of said lock rod,

a guide assembly operably coupled to said mount assembly, said guide assembly including a guide track structured and disposed to receive said retention segment of said lock rod slidably therein,

said guide track being further structured to retain said retention segment of said lock rod in an elevated position, and thereby maintain said retraction assembly to which said lock rod is s cured in said extended position, until said retraction assembly, and therefore said retention segment of said lock rod, are lifted relative thereto to release the retention thereof from with said guide track,

said guide track including an entry track, a central retention region, and an exit track, and

said guide track further including a biased flap disposed over an outlet of said exit track and structured to permit said retention segment to exit said exit track therethrough without permitting re-entry of said retention segment into said exit track therethrough.

2. An improved, retractable armrest as recited in claim 1 wherein said mount assembly includes a pair of said guide members disposed a spaced apart distance from one another.

3. An improved, retractable armrest as recited in claim 2 wherein each of said guide members includes a collar segment.

4. An improved, retractable armrest as recited in claim 3 wherein said collar segment includes a linear bearing.

5. An improved, retractable armrest as recited in claim 2 wherein said retraction assembly includes a pair of said guide elements disposed a spaced apart distance from one another, each of said guide elements structured to be slidably engaged with a corresponding one of said guide members.

6. An improved, retractable armrest as recited in claim 5 wherein each of said guide elements includes an elongate rod.

7. An improved, retractable armrest as recited in claim 6 wherein said elongate rod extends through a collar segment of each of said guide members.

8. An improved, retractable, aircraft seat armrest as recited in claim 5 wherein said retraction assembly is further structured and disposed to form a divider panel.

9. An improved, retractable armrest as recited in claim 8 further comprising a shroud covering said retraction assembly.

10. An improved, retractable armrest as recited in claim 1 wherein said retraction resistance means includes biasing means disposed on said guide element and structured to abut said guide member and resist compression upon said retraction assembly, and therefore said guide element, being pulled upwardly.

11. An improved, retractable, aircraft seat armrest as recited in claim 8 wherein said biasing means includes a spring disposed on a lower end of said guide element.

12. An improved, retractable, aircraft seat armrest as recited in claim 1 wherein said guide track defines a generally M-shaped configuration.

13. An improved, retractable, aircraft seat armrest as recited in claim 1 wherein said extended position is defined by said retention segment disposed in said central retention region.

14. An improved, retractable, aircraft seat armrest as recited in claim 11 wherein aid lock rod is structured to be normally biased towards said exit track.

15. An improved, retractable, aircraft seat armrest as recited in claim 14 wherein said retention segment of said lock rod is structured to ride up said entry track, upon said retraction assembly and therefore said lock rod being pulled upwardly, until said normal bias of said lock rod urges said retention segment into said central retention region where said lock rod is retained in said elevated position upon release of said retraction assembly.

16. An improved, retractable, aircraft seat armrest as recited in claim 15 wherein s id lock rod is further structured to ride up said central retention region and into said exit track upon said retraction assembly, and therefore said lock rod, being lifted upwardly from said extended position, such that subsequent release of s id retraction assembly results in said retention segment riding down and out off said exit track and said retraction assembly dropping into said retracted position.

17. An improved, retractable, aircraft seat armrest as recited in claim 16 wherein said biased flap is further structured to guide said retention segment into said entry track upon said retraction assembly, and therefore said lock rod, being lifted upwardly from said retracted position.