# US 2019/0170182 A1 · Fastener locking members

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- Number: US 2019/0170182 A1
- Document ID: US20190170182A1
- Status: Published application
- Kind: A1
- Application number: 16/268,788
- Filed: 2019-02-06
- Published: 2019-06-06
- Earliest claimed: 2015-08-27
- Assignees: Arconic Inc.
- Applicants: Arconic Inc.
- Inventors: Gregory Rizza; Luke Haylock; Rodrigo Pinheiro
- Web page: https://patentgrep.com/patent/US20190170182A1

## CPC

- F16B 39/282: Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
- B64D 45/02: Lightning protectors; Static dischargers
- F16B 5/01: by means of fastening elements specially adapted for honeycomb panels
- F16B 19/05: Bolts fastening by swaged-on collars (F16B19/08 takes precedence)
- F16B 37/00: Nuts or like thread-engaging members {(specially shaped for rotations by a tool F16B23/00)}
- F16B 4/004: {Press fits, force fits, interference fits, i.e. fits without heat or chemical treatment (F16B4/002 takes precedence)}
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT

## Abstract

A locking member for a fastener, such as a nut or a collar, includes a shank portion and a flanged portion, a bore extending the shank portion and the flanged portion and including a first interior portion located within the shank portion and a containment cavity located within the flanged portion, and an inner wall defining the containment cavity. The containment cavity includes an inner diameter that is greater than an inner diameter of the first interior portion of the bore. The inner wall of the containment cavity includes one or a combination of flat/linear surfaces, concave surfaces, and convex surfaces.

## Claims

### Claim 1

A swage collar, comprising a first end, a second end opposite the first end, a shank portion extending from the second end to a location intermediate the first and second ends, a flanged portion extending from the shank portion and to the first end, a bore extending from the first end to the second end and including a first interior portion located within the shank portion and a containment cavity located within the flanged portion and proximate to the first end, and an inner wall defining a containment cavity, the shank portion being adapted to be swaged, the containment cavity including an inner diameter that is greater than an inner diameter of the first interior portion of the bore, wherein the inner wall of the containment cavity includes a first concave surface located proximate to the first interior portion, a second concave surface located proximate to the first end, a cylindrical surface intermediate and joining the first and second concave surfaces, and a conical surface joining the first concave surface with the first interior portion.

### Claim 2 (depends on 1)

The swage collar of claim 1, wherein the flanged portion includes an annular outer portion extending outwardly therefrom.

### Claim 3 (depends on 1)

The swage collar of claim 1, wherein the collar is made from steel.

### Claim 4 (depends on 1)

The swage collar of claim 1, wherein the collar is made from aluminum.

### Claim 5 (depends on 1)

The swage collar of claim 1, wherein the collar is made from a material chosen from the group consisting of a titanium alloy, a nickel-based alloy, a copper-based alloy, or a stainless steel-based alloy.