# US 5,349,766 A · Boom support pendant pin retainer

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- Number: US 5,349,766 A
- Document ID: US5349766A
- Status: Granted
- Kind: A
- Application number: 07/840,153
- Filed: 1992-02-24
- Granted: 1994-09-27
- Earliest claimed: 1992-02-24
- Assignees: Dresser Industries, Inc.
- Inventors: Vance D. Dutton
- Web page: https://patentgrep.com/patent/US5349766A

## CPC

- E02F 3/58: Component parts {(E02F9/14, E02F3/905 take precedence)}
- F16B 19/02: Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)
- 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)

## Abstract

A boom support pendant pin retainer for an earth working machine having a retainer plate and a projection for preventing rotational, axial and coaxial movement of the pendant pin. The projection is constructed and arranged to mesh in the void between the pendant pin and an adjacent opening in the gantry structure. The projection prevents rotational movement of the pendant pin and the retainer is secured to each end of the pendant pin and adjacent to the gantry, structure to prevent axial and coaxial movement of the pin.

## Claims

### Claim 1

An earth working machine having:
a frame;
a gantry mounted on said frame;
a boom pivotally mounted on said frame, said boom having a point to which a plurality of pendants are attached;
a plurality of pendant pins for attaching said pendants to said gantry, said gantry having a plurality of openings for receiving said pins; and
a plurality of retainers for preventing rotational, coaxial, and axial movement of said pendant pins, each said retainer comprising a retainer plate that is attachable to each end of said pendant pin, and a projection adjacent to an inside face of each said retainer plate, said projection constructed and arranged to be adjacent to a side of said pendant pin and a side of said opening in said gantry.

### Claim 2 (depends on 1)

The earth working machine as set forth in claim 1, wherein each said retainer plate is larger than said gantry opening and has a plurality of bores aligned with a plurality of threaded openings on each end of said pendant pin, said bores and said threaded openings receiving a plurality of bolts so that each said retainer plate is securable to each end of said pendant pin.

### Claim 3 (depends on 1)

The earth working machine as set forth in claim 1, wherein each said opening in said gantry includes a first bore overlapped by a smaller second bore.

### Claim 4 (depends on 3)

The earth working machine as set forth in claim 3, wherein said projection meshes into a void between a side of said pendant pin and a side of said first bore.

### Claim 5 (depends on 3)

The earth working machine as set forth in claim 3, wherein said pendant pin is cylindrical having a notch on each end, and said projection has a semi-circular shape with a flat side that is adjacent said notch of said pin and a side of said first bore.

### Claim 6 (depends on 5)

The earth working machine as set forth in claim 5, wherein each said retainer plate is larger than said second bore to overlap said projection and has a plurality of bores aligned with a plurality of threaded openings on each end of said pendant pin, said bores and said threaded openings receiving a plurality of bolts so that each said retainer plate is securable to each end of said pendant pin.

### Claim 7 (depends on 1)

The earth working machine as set forth in claim 1, wherein said projection is secured to said retainer plate.

### Claim 8

A pendant pin retainer assembly having:
a plurality of pendant pins, each of said pins having a plurality of threaded bores;
a structure having a plurality of openings for receiving said pins, said openings include a first bore overlapped by a smaller second bore;
a retainer plate having a plurality of bores for alignment with a plurality of threaded openings in each end of said pendant pins and said bores and said threaded openings receiving a plurality of bolts so that each said retainer plate is securable to each end of said pendant pins; and
a projection adjacent to an inside face of said retainer plate, said projection constructed and arranged to be adjacent to a side of said pendant pins and a side of said first bore in said structure.

### Claim 9 (depends on 8)

A pendant pin retainer assembly as set forth in claim 8, wherein said projection is secured to said retainer plate.

### Claim 10 (depends on 8)

A pendant pin retainer assembly as set forth in claim 8, wherein each of said pendant pins is cylindrical having a notch on each end, and said projection has a semi-circular shape with a flat side that is adjacent said notch of said pins and a side of said first bore.