Track fitting with quick release lock for aircraft seating

Patent metadata

Field	Value
Publication number	US-10829225-B2
Application number	US-201816216555-A
Country	US
Kind code	B2
Filing date	Dec 11, 2018
Priority date	Dec 11, 2018
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A track fitting for securing a seat pedestal of an aircraft seat to a floor of an aircraft may comprise a strut and a lock assembly. The strut may include an aft section configured to attach to an aft foot of the seat pedestal, a forward section configured to attach to a forward foot of the seat pedestal, and a central section extending between the aft section and the forward section. The lock assembly may be located proximate the aft section of the strut.

First claim

What is claimed is:

1. A track fitting for securing a seat pedestal of an aircraft seat to a floor of an aircraft, the track fitting comprising:
a strut including:
an aft section configured to attach to an aft foot of the seat pedestal,
a forward section configured to attach to a forward foot of the seat pedestal, and
a central section extending between the aft section and the forward section; and

a lock assembly located proximate the aft section of the strut, the lock assembly comprising:
a shaft coupled to the strut, and
a plunger configured to rotate relative to the strut and about the shaft, the plunger comprising a channel defined by a first lug arm of the plunger and a second lug arm of the plunger, wherein the plunger rotates between an unlocked position and a locked position by rotating about the shaft, and wherein in the unlocked position, the first lug arm and the second lug arm of the plunger are located on a top surface of the strut, and wherein in the locked position, the strut is located between the first lug arm and the second lug arm of the plunger.

2. The track fitting of claim 1 , wherein the aft section of the strut comprises a plurality of aft protrusions extending horizontally from the strut, and wherein the forward section of the strut comprises a plurality of forward protrusions extending horizontally from the strut.

3. The track fitting of claim 2 , wherein the aft section of the strut further comprises a plurality of aft flanges extending vertically from the strut, and wherein the forward section of the strut further comprises a plurality forward flanges extending vertically from the strut.

4. The track fitting of claim 1 , wherein the lock assembly further comprises a spring configured to apply a biasing force to the plunger.

5. The track fitting of claim 1 , wherein the plunger is configured to rotate 90° about the shaft between the locked position.

6. The track fitting of claim 5 , wherein the aft section of the strut comprises:
a first aft protrusion extending from a first sidewall surface of the strut; and
a second aft protrusion extending from a second sidewall surface of the strut opposite the first sidewall surface of the strut, and wherein a width of the plunger as measured between an external surface of the first lug arm and the second lug arm is equal to a width of the strut as measured between the first aft protrusion and the second aft protrusion.

7. The track fitting of claim 1 , wherein a sidewall surface of the central section of the strut defines a groove.

8. A seat pedestal, comprising
a forward foot;
an aft foot located aft of the forward foot; and
a track fitting coupled to the forward foot and the aft foot, the track fitting comprising:
a strut including an aft section coupled to the aft foot, a forward section coupled to the forward foot, and a central section extending between the aft section and the forward section, wherein the aft section of the strut comprises a first aft protrusion extending from a first sidewall surface of the strut and a second aft protrusion extending from a second sidewall surface of the strut, the second sidewall surface being opposite the first sidewall surface of the strut, and wherein a width of the central section of the strut as measured between the first sidewall surface of the strut and the second sidewall surface of the strut is less than a width of the aft section of the strut as measured between the first aft protrusion and the second aft protrusion, such that the central section of the strut may be located in a seat track, and
a lock assembly located proximate the aft section of the strut.

9. The seat pedestal of claim 8 , wherein the lock assembly comprises:
a shaft coupled to the strut;
a plunger configured to rotate relative to the strut and about the shaft, the plunger comprising a channel defined by a first lug arm of the plunger and a second lug arm of the plunger, wherein the plunger rotates between an unlocked position and a locked position by rotating about the shaft, and wherein in the unlocked position the first lug arm and the second lug arm of the plunger are located on a top surface of the strut, and wherein in the locked position the strut is located between the first lug arm and the second lug arm of the plunger; and
a spring configured to apply a biasing force to the plunger.

10. The seat pedestal of claim 9 , wherein the plunger is configured to rotate 90° about the shaft between the unlocked position and the locked position.

11. The seat pedestal of claim 9 ,
wherein a width of the plunger as measured at an external surface of the first lug arm and the second lug arm is equal to the width of the strut as measured between the first aft protrusion and the second aft protrusion.

12. The seat pedestal of claim 8 , wherein the first sidewall surface in the central section of the strut defines a groove.

13. The seat pedestal of claim 8 , wherein the aft section of the strut further comprises:
a shelf located proximate a top surface of the strut, and wherein a width of the strut as measured at the shelf is less than the width of the strut as measured between the first aft protrusion and the second aft protrusion.

14. The seat pedestal of claim 13 , wherein the width of the strut as measured at the shelf is greater than the width of the central section as measured between the first sidewall surface and the second sidewall surface.

15. An aircraft seat assembly, comprising:
a seat pedestal including:
a forward foot and an aft foot, and
a track fitting coupled to the forward foot and the aft foot, the track fitting comprising:
a strut including an aft section coupled to the aft foot, a forward section coupled to the forward foot, and a central section extending between the aft section and the forward section, wherein the aft section of the strut comprises a plurality of aft protrusions extending horizontally from the strut, and wherein the forward section of the strut comprises a plurality of forward protrusions extending horizontally from the strut, and
a lock assembly located proximate the aft foot, the lock assembly comprising a plunger, wherein a portion of the plunger includes a channel defined by a first lug arm and a second lug arm, and wherein the plunger is configured to rotate between an unlocked position and a locked position, and wherein in the unlocked position the first lug arm and the second lug arm of the plunger are located on a top surface of the strut, and wherein in the locked position the strut is located between the first lug arm and the second lug arm of the plunger; and

a seat track configured to receive the aft section, the forward section, and the central section of the strut, wherein the track fitting is configured to translate between an unlocked state and a locked state, and wherein in the unlocked state the plunger is in the unlocked position and the plurality of aft protrusions is vertically aligned with a plurality of arcuate access openings defined by the seat track, and wherein in the locked state the plunger is in the locked position and the plurality of aft protrusions is vertically aligned with a plurality of neck sections of the seat track.

16. The aircraft seat assembly of claim 15 , wherein in the locked state the plunger is located in a first arcuate access opening of the plurality of arcuate access openings, and at least one of the first lug arm or the second lug arm contacts a first neck section of the plurality of neck sections.

Assignees

• Ami Ind Inc

Inventors

• Doughty Kyle D
• Ferguson Keith M

Classifications

• Y02T50/40

  Weight reduction · CPC title

• B60N2/0715

  C or U-shaped · CPC title

• B60N2/929

  linear · CPC title

• B60N2/01516

  with locking mechanisms · CPC title

• B64D11/0696 Primary

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