# US 5,701,802 A · Multipart piston for an internal combustion engine

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- Number: US 5,701,802 A
- Document ID: US5701802A
- Status: Granted
- Kind: A
- Application number: 08/743,823
- Filed: 1996-11-05
- Granted: 1997-12-30
- Earliest claimed: 1995-11-21
- Assignees: AE Goetze GmbH
- Inventors: Klaus Junge
- Web page: https://patentgrep.com/patent/US5701802A

## CPC

- F16J 1/14: with connecting-rods, i.e. pivotal connections
- F02F 3/0069: {the crown and skirt being interconnected by the gudgeon pin}
- F05C 2201/021: Aluminium
- F05C 2201/0448: Steel
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS
- F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F05C: INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES

## Abstract

An engine piston includes a piston head; a first bearing block forming a one-piece component with the piston head and having a first bearing face; a piston skirt being a component separate from the piston head; a second bearing block forming a one-piece component with the piston skirt and having a second bearing face; and a coupling device for interconnecting the piston head and the piston skirt and for interconnecting the first and second bearing blocks with one another. The first and second bearing faces complement one another to form a bearing for rotatably supporting a connecting rod.

## Claims

### Claim 1

An engine piston comprising
(a) a piston head;
(b) a first bearing block forming a one-piece component with said piston head and having a first bearing face;
(c) a piston skirt being a component separate from said piston head;
(d) a second bearing block forming a one-piece component with said piston skirt and having a second bearing face; and
(e) coupling means for interconnecting said piston head and said piston skirt to provide for a relative motion between said piston head and said piston skirt and for interconnecting said first and second bearing blocks with one another; said first and second bearing faces complementing one another to form a bearing for rotatably supporting a connecting rod.

### Claim 2 (depends on 1)

The engine piston as defined in claim 1, wherein said first and second bearing faces together form a hollow cylinder.

### Claim 3 (depends on 1)

The engine piston as defined in claim 1, wherein said first and second bearing blocks have respective outer surfaces; and further wherein said coupling means comprise holding bodies inserted on said first and second bearing blocks; said holding bodies engaging said outer surfaces of said first and second bearing blocks.

### Claim 4 (depends on 3)

The engine piston as defined in claim 3, wherein said first and second bearing faces are semi-cylindrical.

### Claim 5 (depends on 3)

The engine piston as defined in claim 3, wherein said holding bodies are securing rings.

### Claim 6

An engine piston comprising
(a) a piston head;
(b) a first bearing block forming a one-piece component with said piston head and having a first bearing face;
(c) a piston skirt being a component separate from said piston head;
(d) a second bearing block forming a one-piece component with said piston skirt and having a second bearing face;
(e) a connecting rod having a rod head; and
(f) coupling means for interconnecting said piston head and said piston skirt to provide for a relative motion between said piston head and said piston skirt and for interconnecting said first and second bearing blocks with one another; said first and second bearing faces complementing one another to form a bearing for rotatably supporting said connecting rod at said rod head.

### Claim 7 (depends on 6)

The engine piston as defined in claim 6, wherein said rod head is composed of oppositely extending pins received by said bearing.