Gm Global Technolgoy Operations, Inc.

Charles D Denniston

Melvin H Hallmann

Ronald G Davis

Kenneth H Clayton

Richard K Van Skyock

Donald G Guetersloh

A combination spring and washer device which facilitates pin-type cantilever mounting of a solenoid valve having a tubular plastic body on a transmission control valve body. The plastic body of the solenoid valve has a relatively heavy coil at a coil end thereof and is plugged into a pressure bore in the control valve body so that the coil is supported in cantilever beam fashion. A minimum wall thickness flux gap portion of the plastic body is located between the control valve body and the coil end of the plastic body. The spring and washer device is snap fitted over the flux gap portion and includes a flat washer portion which bears against a flange on the plastic body on one side of the flux gap portion. The spring and washer device further includes a pair of integral spring arms which bear against the coil body which is disposed on the other side of the flux gap portion so that the flux gap portion is preloaded in tension. The magnitude of the preload is calculated to balance the dynamic beam bending forces which occur during normal vehicle operation due to the concentration of the mass of the coil at the coil end of the plastic body.

Spring and washer device

A belt tensioner has a pair of pivotally mounted cam members which engage a stationary mounting strap. One cam is pivotally mounted on a block which is drivingly connected through a pivotal lever to a linear motor. The one cam is operative to engage a stationary strap when the motor is operated to urge the belt sheave bracket to pivot in a direction to increase the tension in the belt. When the one cam and block are moved by the return stroke of the motor, the other cam, which is mounted on the belt sheave bracket, engages the stationary strap to prevent movement of the belt sheave bracket relative to the strap.

Growing community of inventors

Middletown, IN, United States of America

Charles D Denniston