# US 2014/0193106 A1 · Asymmetric split bearing with geometrically contoured work surface

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0193106 A1
- Document ID: US20140193106A1
- Status: Published application
- Kind: A1
- Application number: 14/149,455
- Filed: 2014-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-08
- Assignees: Genesee Northern Research LLC
- Inventors: Michael F. Pyszczek
- Web page: https://patentgrep.com/patent/US20140193106A1

## CPC

- F16C 33/046: {divided or split, e.g. half-bearings or rolled sleeves}
- F16C 9/04: Connecting-rod bearings; Attachments thereof
- F16C 17/022: {with a pair of essentially semicircular bearing sleeves}
- F16C 17/04: for axial load only
- F16C 17/107: {with at least one surface for radial load and at least one surface for axial load}
- F16C 17/26: Systems consisting of a plurality of sliding-contact bearings
- F16C 33/1065: {Grooves on a bearing surface for distributing or collecting the liquid}
- F16C 33/128: {Porous bearings, e.g. bushes of sintered alloy}
- F16C 17/246: {related to wear, e.g. sensors for measuring wear}
- F16C 33/043: {Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]}
- F16C 33/20: Sliding surface consisting mainly of plastics (F16C33/22 - F16C33/28 take precedence)
- F16C 33/24: with different areas of the sliding surface consisting of different materials
- F16C 2240/42: Groove sizes
- F16C 2240/48: Particle sizes
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

An asymmetric split bearing with a geometrically contoured work surface is provided that has an upper segment and lower segment and a plurality of spaced, recesses in the sidewall of the bearing segment, which are joined together by means of bearing surfaces or lands. The asymmetric split bearing allows for a greater range of applications, such as reciprocating engine crankshafts, which require split bearings for support. The number of bearing surfaces on each segment can be optimized for load conditions and to minimize friction. The bearing utilizes powdered metal manufacturing and is self-cleaning.

## Claims

### Claim 1

An asymmetric split bearing comprising a geometrically contoured work surface.

### Claim 2 (depends on 1)

The bearing of claim 1 comprising:
an upper bearing segment comprising an upper bearing segment sidewall;
a lower bearing segment comprising a lower bearing segment sidewall; and
a plurality of spaced recesses in the upper bearing segment sidewall and in the lower bearing segment sidewall, wherein the recesses are joined together by bearing surfaces.

### Claim 3 (depends on 2)

The bearing of claim 2 wherein the bearing surfaces comprise segments of a cylindrical surface.

### Claim 4 (depends on 1)

The bearing of claim 1 wherein a plurality of the segments are joined such that the outside surface of the bearing is essentially cylindrical.

### Claim 5 (depends on 1)

The bearing of claim 1 wherein the upper bearing segment and/or the lower bearing segment are manufactured from powdered metal, polymer, ceramic or wrought metal.

### Claim 6 (depends on 1)

The bearing of claim 1 wherein the number of bearing surfaces and recesses in the upper bearing segment are greater than the number of bearing surfaces and recesses in the lower bearing segment.

### Claim 7 (depends on 1)

The bearing of claim 1 wherein the number of bearing surfaces and recesses in the upper bearing segment are lower than the number of bearing surfaces and recesses in the lower bearing segment.

### Claim 8 (depends on 1)

The bearing of claim 1 wherein the number of bearing surfaces and recesses in the upper bearing segment are the same as the number of bearing surfaces and recesses in the lower bearing segment.