Road structure – process – or apparatus – Apparatus – Means to agitate material
Patent
1988-01-11
1989-07-18
Massie, IV, Jerome W.
Road structure, process, or apparatus
Apparatus
Means to agitate material
404 97, 425456, 425458, E01C 1938, E01C 1922
Patent
active
048489611
ABSTRACT:
The present invention relates to a concrete screeding apparatus, and more particularly to an improved portable and lightweight vibrating concrete screed enabling a workman to use same without the need for rigid forms. The screeding apparatus comprises a generally elongated beam having a horizontal surface and a generally vertical surface. A plurality of vibrators are mounted on the beam. The height of the vertical surface diminishes from the center to the edges so as to increase the amplitude of vibration and, therefore, improve the manoeuverability of the screed. In addition, the corners formed by the trailing edge and the side edges of the horizontal surface are rounded so as to avoid the penetration of the side edges into the freshly poured concrete.
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Letchford John F.
Massie IV Jerome W.
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