Perforated Capsule Hook for Stable High Speed Retract

• US 20190322495A1
• Filed: 04/20/2018
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Wing Aviation LLC (Alphabet Inc.)
• Original Assignee: Wing Aviation LLC (Alphabet Inc.)
• Inventors: Prager, Andre
• Granted Patent: US 10,974,934 B2
• Time in Patent Office: Days
• CPC Class Codes: B64D 1/10 Stowage arrangements for the devices in aircraft
• CPC Class Codes: B64D 1/12 Releasing
• CPC Class Codes: B64D 1/22 Taking-up articles from earth's surface
• CPC Class Codes: B64U 10/13 Flying platforms
• CPC Class Codes: B64U 10/25 Fixed-wing aircraft VTOL aircraft B64U10/20
• CPC Class Codes: B64U 2101/60 for transporting passengers; for transporting goods other than weapons
• CPC Class Codes: B64U 2101/64 for parcel delivery or retrieval
• CPC Class Codes: B64U 2101/66 for retrieving parcels
• CPC Class Codes: B64U 2101/67 the UAVs comprising tethers for lowering the goods
• CPC Class Codes: B64U 50/37 Charging when not in flight
• CPC Class Codes: B66C 1/22 Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
• CPC Class Codes: B66C 1/34 Crane hooks
• CPC Class Codes: B66C 13/085 electrical
• CPC Class Codes: B66F 19/00 Hoisting, lifting, hauling or pushing, not otherwise provided for
• CPC Class Codes: G06Q 10/0832 Special goods or special handling procedures, e.g. handling of hazardous or fragile goods

Abstract

A payload coupling apparatus is provided that includes a housing having an upper portion, a lower portion, and a side wall positioned between the upper and lower portions, an attachment point on the housing adapted for attachment to a first end of a tether, a slot in the housing that extends downwardly towards a center of the housing thereby forming a hook or lip on the lower portion of the housing beneath the slot, a plurality of holes in the upper portion of the housing; and a plurality of holes in the lower portion of the housing. A method of retracting a payload coupling apparatus during UAV flight is also provided.

Claims

1. A payload coupling apparatus comprising:

a housing having an upper portion, a lower portion, and a side wall positioned between the upper and lower portions;

an attachment point on the housing adapted for attachment to a first end of a tether;

a slot in the housing that extends downwardly towards a center of the housing thereby forming a hook or lip on the lower portion of the housing beneath the slot;

a plurality of holes in the upper portion of the housing; and

a plurality of holes in the lower portion of the housing.

2. The payload coupling apparatus of claim 1, wherein a plurality of holes are positioned in the side wall of the housing.

3. The payload coupling apparatus of claim 2, wherein a first cam and a second cam extend outwardly from opposite sides of the side wall, and

wherein a plurality of holes are positioned on the first cam and on the second cam.

4. The payload coupling apparatus of claim 1, wherein the plurality of holes on the lower portion of the housing extend through a bottom surface of the hook or lip.

5. The payload coupling apparatus of claim 4, wherein one or more holes extend through a top surface of the hook or lip.

6. The payload coupling apparatus of claim 5, wherein one or more holes extend through an upper surface of the slot.

7. The payload coupling apparatus of claim 1, wherein the housing is hollow, and air is allowed to flow through the plurality of holes in the upper portion of the housing, through the housing, and exit the plurality holes in the lower portion of the housing.

8. The payload coupling apparatus of claim 1, wherein the upper portion of the housing has a hemispherical shape.

9. The payload coupling apparatus of claim 1, wherein the plurality of holes on a left side of the upper portion of the housing are positioned symmetrically with the plurality of holes on a right side of the upper portion of the housing.

10. The payload coupling apparatus of claim 2, wherein air is partially directed through the holes in the side wall during flight.

11. The payload coupling apparatus of claim 1, wherein the plurality of holes on a left side of the lower portion of the housing are positioned symmetrically with the plurality of holes on a right side of the lower portion of the housing.

12. The payload coupling apparatus of claim 1, wherein a weighted disc is positioned within the housing.

13. The payload coupling apparatus of claim 12, wherein one or more holes are positioned in the weighted disc.

14. The payload coupling apparatus of claim 12, wherein the weighted disc includes a centrally located aperture.

15. The payload coupling apparatus of claim 13, wherein the housing is hollow, and air is allowed to flow through the plurality of holes in the upper portion of the housing, through the one or more holes in the weighted disc, through the housing, and exit the plurality holes in the lower portion of the housing.

16. The payload coupling apparatus of claim 2, wherein when the first end of the tether is attached to the attachment point on the housing, the housing remains stable when the housing moves through an air flow of 25-35 m/s.

17. The payload coupling apparatus of claim 2, wherein the side wall has a diameter D, and wherein when the first end of the tether is attached to the attachment point on the housing, the housing has a centerline that remains within a distance of 2D to 3D of centerline of the housing when the housing moves through an air flow of 25-35 m/s.

18. The payload coupling apparatus of claim 3, wherein a first indentation is positioned on a right side of the slot and a second indentation is positioned on a left side of the slot, and the first and second indentations and first and second cams are adapted to prevent a handle of a payload from coming out of the slot during possible rotation of the payload caused by high winds during winch up.

19. A method of retracting a payload coupling apparatus to a UAV comprising:

providing the payload coupling apparatus with a housing having an upper portion and a lower portion, and a side wall positioned between the upper portion and the lower portion, the housing attached to a first end of a tether with a second end of the tether attached to the UAV, a slot in the housing that extends downwardly towards a center of the housing thereby forming a hook or lip on the lower portion of the housing beneath the slot, a plurality of holes in the upper portion of the housing, a plurality of holes in the side wall of the housing, and a plurality of holes positioned in the lower portion of the housing;

moving the UAV forward at a rate of 25-35 m/s;

retracting the payload coupling apparatus towards the UAV with the tether as the UAV moves forward at a rate of 25-35 m/s;

wherein the payload coupling apparatus remains stable during retraction of the payload coupling apparatus.

20. The method of claim 19, wherein the housing is hollow, and air is allowed to flow through the plurality of holes in the upper portion of the housing, through the housing, and exit the plurality holes in the lower portion of the housing.

21. The method of claim 19, wherein the plurality of holes on the lower portion of the housing extend through a bottom surface of the hook or lip;

wherein a plurality of holes extend through a top surface of the hook or lip; and

wherein a plurality of holes extend through an upper surface of the slot.

22. The method of claim 19, wherein a weighted disc is positioned within the housing;

wherein the weighted disc includes one or more holes; and

wherein the housing is hollow, and air is allowed to flow through the plurality of holes in the upper portion of the housing, through the one or more holes in the weighted disc, through the housing, and exit the plurality holes in the lower portion of the housing.

23. A payload coupling apparatus comprising:

a housing having an upper portion, a lower portion, and a side wall positioned between the upper and lower portions;

an attachment point on the housing adapted for attachment to a first end of a tether;

a slot in the housing that extends downwardly towards a center of the housing thereby forming a hook or lip on the lower portion of the housing beneath the slot;

wherein a first cam and a second cam extend outwardly from opposite sides of the side wall; and

wherein a first indentation is positioned on a right side of the slot and a second indentation is positioned on a left side of the slot, and the first and second indentations and first and second cams are adapted to prevent a handle of a payload from coming out of the slot during possible rotation of the payload caused by high winds during winch up.