Claims
- 1. A method of making concrete access floor panels adapted to be supported on pedestals, said method comprising the steps of:
- forming a metal pan having a planar bottom defining openings and peripheral sidewalls;
- inserting the metal pan into a two-part mold, said mold including a part defining a thin mold cavity having a cavity bottom and cavity sidewalls dimensioned to receive the metal pan in a slip fit fashion and said mold including another part defining a flat surface facing said mold cavity;
- placing a smooth magnetic sheet within said mold cavity against said cavity bottom and between said cavity bottom and said planar bottom of said metal pan, said sheet dimensioned and disposed to engage the planar bottom of the metal pan to prevent seepage of a concrete mixture through the openings in the planar bottom during casting;
- filling the pan within the mold with the concrete mixture;
- clamping the mold parts together;
- rotating the mold about an axis; and
- vibrating the mold while it is being rotated to evenly distribute the concrete mixture within the pan.
- 2. A method as defined by claim 1 further including the step of clamping the mold to a turntable and wherein said rotating step includes the step of rotating said turntable.
- 3. A method as defined by claim 1 further including the step of inserting pedestal corner pads into the mold cavity at four corners thereof with each of the pads having a portion extending into said pan through the bottom thereof.
- 4. A method as defined by claim 3 further including the step of inserting spacer buttons into the sidewalls of said pan at generally diagonal positions.
CROSS REFERENCE TO RELATED APPLICATION
this is a division of application Ser. No. 743,987, filed June 12, 1985, and now U.S. Pat. No. 4,639,204.
US Referenced Citations (36)
Divisions (1)
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Number |
Date |
Country |
Parent |
743987 |
Jun 1985 |
|