HAWKEYE CONCRETE PRODUCTS CO.
|HAWKEYE CONCRETE PRODUCTS CO. Patent applications|
|Patent application number||Title||Published|
|20140331580||POST-TENSIONING CONCRETE PIPE WRAP - A post-tensioning wrap includes a housing having at least one cavity and at least one tendon bonded to the housing. The wrap can be wrapped around the concrete article to equalize compression. Thereafter, a medium is injected into the cavity causing the housing to swell and compression of the concrete article by the tendon.||11-13-2014|
|20140308474||CONCRETE PRODUCT CAGE SPACER - A spacer for spacing the reinforcing cage from the forms used in making concrete products. The spacer is made of concrete or a geopolymer material and has a pair of spaced-apart notches, one T-shaped and one L-shaped that provide for simple, quick installation on adjacent horizontal wires of the reinforcing cage. When locked into place, the shape of the spacer provides the desired cover, the amount of which depends upon the size of the spacer when formed.||10-16-2014|
|20130302462||CONCRETE ROLLER HEAD - The extruder head assembly comprises of a drive shaft connected to a troweling cylinder. A plurality of rollers are spaced around the drive shaft and above the troweling cylinder and intermittently contact an inside surface as the troweling cylinder is rotated and pulled upward. The rollers are either elliptically shaped or round positioned on an eccentric axis for intermittent contact against an inside surface of the concrete pipe. The rollers compact the concrete mixture to form the outer surface and the troweling cylinder follows the compaction by smoothing the surface. The troweling cylinder comprises a plurality of removable sections. Each section is composed of a plurality of removable and replaceable tile segments. When a tile segment breaks, the section containing the broken tile segment can be removed so that the broken tile segment can be replaced.||11-14-2013|
|20130291766||COMPOSITE PALLETS FOR CONCRETE PIPE - Pallet includes an inner structural support with a bottom section and a top section. The top section has an upward facing, load bearing surface that is bonded with a substantially smooth polymer layer. More specifically, the bottom section includes an annular ring that supports a top section comprising an annular ring and a flange that supports the load. The top section is bonded with a polymer to form a smooth surface suitable for curing concrete.||11-07-2013|
|20130108410||METHOD FOR HANDLING SPACERS USED IN PRODUCING CONCRETE PIPE||05-02-2013|
|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|
Patent applications by HAWKEYE CONCRETE PRODUCTS CO.