Blaw-knox Construction Equipment Corporation

Blaw-knox Construction Equipment Co.

Brian S Hawkins

Ted E Holmes

Paul L Hargis

A retainer device is used with a screed assembly including a main screed and a pair of front-mounted screed extensions connected with the main screed. Each extension is pivotally attached to the main screed and has a front surface facing generally away from the main screed. The retainer device includes a retainer plate disposed adjacent to the front surface of the screed extension. A horizontally-extending rod has a first end connected with the retainer plate and a second end connected with the main screed. The rod is configured to displace the retainer plate between a first, most distal position with respect to the main screed and a second, most proximal position with respect to the main screed. At the most proximal position, the retainer member acts upon the screed extension such that the screed extension is retained generally in contact with the main screed. Further, the plate prevents rotation of the screed extension in a direction generally away from the main screed.

Retainer device for paving screed extensions

A material flow modifying device is for a screed assembly of a paving machine. The screed assembly has a main screed with a central axis extending in a direction of intended travel of the paving machine and two screed extensions movably mounted to the main screed. The flow modifying device includes a deflector member connected with the screed extension and having a flow surface facing toward the central axis of the main screed. The flow surface is contactable with paving material on a base surface and is configured to displace the material toward the central axis when the paving machine moves in the intended travel direction. The deflector member has a first end disposed adjacent to the inner vertical surface of the screed extension and a second, free end disposed proximal to the front vertical surface of the main screed, such that the second end moves laterally along the main screed during movement of the screed extension. The distance between the member second end and the central axis is greater than the distance between the member first end and the central axis, such that the flow surface is angled inwardly and rearwardly toward the main screed central axis. Preferably, the deflector member includes a main body portion attached to the screed extension and a wear plate removably attached to the main body portion. Alternatively, the deflector member is formed as a main body portion only or even as an integral portion of the screed extension.

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Mattoon, IL, United States of America

Brian S Hawkins