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HAWKEYE CONCRETE PRODUCTS CO.
| HAWKEYE CONCRETE PRODUCTS CO. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110057403 | TANGLE FREE SPACER CART - A method and cart for handling spacers used for spacing the wire mesh reinforcing cages used in the production of concrete pipe. The spacers are placed and shipped on hollow tubes laid in layers in a shipping container. The spacers are shipped to the user stored on these hollow tubes together with a mobile cart that has a vertical support containing a plurality of outwardly extending arms. When ready to be installed at the concrete pipe production site, a tube containing the spacers is removed from the shipping container and slipped over each arm. The cart can then easily be moved around the production location where the spacers for readily available for use in making the concrete product. | 03-10-2011 |
| 20100178373 | APPARATUS AND METHOD FOR PROTECTING LINED CONCRETE PIPE DURING THE MANUFACTURING PROCESS - At the filling station of a dry cast pipe making machine for making pipe lined with a plastic liner, the liner is first placed over the core and then a plurality of spaced-apart, removable L-shaped plates are secured around the top edge of the core. One leg of each plate extends inside the core with the other leg extending downwardly over the top edge of the liner. The plates are removably held in place on the core by the use of a clamping device, such as a vise-grip, for example. Once the form is filled with concrete and ready for the pressure heading step, the downwardly extending legs of the plates serve as ‘shoehorns’ to guide the pressure header over the top of the liner and prevent damage to it. In addition, the plates will assist in centering the core within the jacket. | 07-15-2010 |