Sloan Valve Company

Midland Brake, Inc.

Arthur A Berg

Frederic Lissau

Charles S Allen

Eugene W Schmitt

Michael R Stoltenberg

Frederic Lissau, Deceased

An automatic slack adjuster for over-the-road vehicle brakes is adapted to be mounted between the brake chamber and brake operating shaft, for example an operating shaft known as an S cam shaft. The slack adjuster includes a body having a lever arm pivotally connected thereto, which lever arm is connected to the brake chamber through a brake operating rod. A drive member is fixed onto the brake operating shaft and is movably positioned within the body. There is an adjustable connection between the lever arm and the drive member for adjusting the relationship between the drive member and body in response to the body movement required for a brake application. The adjustable connection provides for incremental adjustment and is responsive, during brake application movement of the lever, for both sensing and taking up a limited amount of slack.

Vehicle automatic slack adjuster

An electrical connector receptacle for use in over-the-road vehicles includes a receptacle body and a mounting flange extending outwardly from the body, with the mounting flange adapted to be mounted in a generally vertical disposition on a vehicle. The body has a closed end and a chamber, with the chamber having an axis generally perpendicular to the plane of the mounting flange. There are a plurality of electrical contact pins mounted on the body closed end which extend into the chamber. The chamber has an open end and a cover pivotally mounted on the body to close the chamber open end. There is a drain passage formed in the bottom of the chamber and extending generally axially for a substantial portion of the length of the chamber. The drain passage slants downwardly from adjacent the body closed end to the body open end.

Over-the-road vehicle electrical connector with drain passage

A slack adjuster for use in a transportation environment has a body which has a lever arm formed at one end thereof. There is a crosshole or passage in the body and a worm gear wheel is positioned in the passage for mounting on a brake operating shaft. There is a slot formed in the body and opening into the passage. The slot has three mutually perpendicular surfaces and is of a size and shape to hold a worm gear and to provide for threaded engagement of the worm gear and the worm gear wheel. There is a bore in the body which is generally perpendicular to one of the slot's mutually perpendicular surfaces. A shaft is positioned in the bore and coaxially mounts the worm gear for adjustment thereof. The bore is oversized relative to the shaft, thereby providing no bearing support therefor. A torque applied to the worm gear wheel from the body lever arm applies a resultant force, having a component perpendicular to and a component parallel with the worm gear axis, from the worm gear to the slot's perpendicular surfaces.

Vehicle slack adjusters

This is concerned with a front air swingaway which is a device for connecting the air supply between a tractor-trailer combination where the air source is on the tractor. The swingaway is constructed to be mounted on the front of the trailer and projects forwardly when in use but is automatically folded back against the front of the trailer when not in use, meaning when it is not connected to a gladhand.

Front air swingaway

A combination gladhand and shutoff valve for use in tractor and/or trailer applications has a gladhand body with an air inlet and an air outlet. A seal member is positioned at the air outlet and there is a chamber within the body which connects the inlet and outlet. A valve plug is movable within the chamber toward and away from the seal member along a path coaxial with the outlet and the seal member. The valve plug has portions thereon which cooperate with the seal member to close the outlet. A handle is located outside of the gladhand body and is operatively associated with the valve plug for effecting movement thereof between open and closed positions.

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Northbrook, IL, United States of America

Arthur A Berg