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US3775529A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of surface finishing cast concrete panels

Assignee: COREWALL Ltd A CORP OF ONTARIO CANADA
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Filing: 1971-08-23
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Granted: 1973-11-27
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Expires: 1991-08-23
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Abstract

Abstract This invention relates to a method of surface finishing cast concrete panels with a ribbed finish and the aggregate between the ribs exposed as to shape. The method comprises the steps of pouring a wet concrete into a casting bed in the form of a concrete panel, forming ribs in the exposed surface of said wet concrete and exposing the aggregate as to shape on the upper surface of the ribs by moving a plurality of rotating discs over the wet concrete surface. The discs are mounted in spaced relation on a shaft, and the movement of said discs at their lower extremities due to their rotation and the movement of said discs due to their movement across the surface of said wet concrete being in the same direction, said shaft and said discs driving a furrow of wet concrete in advance thereof across the surface of said concrete.

Inventors

  • 👤 T Steenson
  • 👤 W Paton

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 20:22
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/08; B28B11/0863

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-26 1977-05-28 1977-11-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-26 1981-05-28 1981-11-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-26 1985-05-28 1985-11-27 $7700.00 Window Closed / Lapsed

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