# US 5,342,242 A · Engine/transmission rotary connection

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

- Number: US 5,342,242 A
- Document ID: US5342242A
- Status: Granted
- Kind: A
- Application number: 08/015,724
- Filed: 1993-02-09
- Granted: 1994-08-30
- Earliest claimed: 1993-02-09
- Assignees: General Motors Corporation
- Inventors: Barry L. Ladd; Michael B. Pociask
- Web page: https://patentgrep.com/patent/US5342242A

## CPC

- F16D 1/0864: {due to tangential loading of the hub, e.g. a split hub}
- F16D 3/77: the ring being metallic
- F16H 41/24: Details
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16H: GEARING

## Abstract

An engine output shaft and a transmission torque converter are connected for torque transmission therebetween. A flex plate is disposed between, and secured for rotation with either, the output shaft or the torque converter input shell. The flex plate includes an axially extending rim frictionally engaged with an annular wall secured either the output shaft or the torque converter input shell. A clamp member surrounds the rim on the flex plate radially outward of the annular wall and is selectively tightened to establish a force therein to cause the frictional engagement to be sufficient to transmit the torque.

## Claims

### Claim 1

A rotating drive connection between an engine output member and a transmission input member, said connection comprising:
a flex plate having an inner hub portion secured for rotation with one of said output member and said input member;
an outer axially extending, annular rim on said flex plate;
an annular drive wall disposed on the other of said output member and said input member disposed radially inwardly of and circumferentially abutting said rim; and,
clamp means having an annular band portion disposed circumjacent said rim; and,
tightening means for tightening said annular band portion about said rim for frictionally securing said rim with said annular drive wall.

### Claim 2 (depends on 1)

A drive connection, as set forth in claim 1, wherein:
said rim has axially spaced lip and finger portions to position said annular band portion axially on said rim.

### Claim 3 (depends on 1)

A drive connection, as set forth in claim 1, wherein:
said band portion has spaced open ends; and,
said tightening means has a threaded member operatively connected with one of said open ends;
a receptacle operatively connected with the other of said open ends; and,
means threadably engaging the threaded member and cooperating with the receptacle for drawing the open ends toward each other.

### Claim 4 (depends on 2)

A drive connection, as set forth in claim 2, wherein:
said flex plate includes an outer periphery defined by a plurality of segments presenting radially oriented spaces at the annular rim to permit radial contraction of said rim during tightening of said tightening means.