Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| D658783 | Molded surface of a concrete product | 05/01/2012 |
| D657889 | Molded surface of a concrete product | 04/17/2012 |
| D657070 | Molded surface of a concrete product | 04/03/2012 |
| 8128851 | Concrete block and method of making same Molds and processes that permit high-speed, mass production of retaining wall blocks having patterned or other processed front faces, as well as retaining wall blocks formed by such processes. The invention permits the front face of the block to be impressed with a ... | 03/06/2012 |
| D653772 | Molded surface of a concrete product | 02/07/2012 |
| D653355 | Molded surface of a concrete product | 01/31/2012 |
| D652953 | Molded surface of a concrete product | 01/24/2012 |
| D651723 | Molded surface of a concrete product | 01/03/2012 |
| D650917 | Molded surfaces of a concrete product | 12/20/2011 |
| D650916 | Molded surface of a concrete product | 12/20/2011 |
| D650492 | Molded surface of a concrete product | 12/13/2011 |
| D650491 | Molded surface of a concrete product | 12/13/2011 |
| D650094 | Sculpted cap block | 12/06/2011 |
| D646402 | Molded surface of a concrete product | 10/04/2011 |
| D645165 | Molded surface of a concrete product | 09/13/2011 |
| 8006683 | Block splitting assembly and method A masonry block that is produced from a workpiece that is split in a block splitting assembly which uses any of a variety of projections to supplement or replace the action of the splitting blade in splitting and dressing the workpiece. The resulting masonry block h... | 08/30/2011 |
| D643943 | Molded surface of a concrete product | 08/23/2011 |
| D643942 | Molded surface of a concrete product | 08/23/2011 |
| D643941 | Molded surface of a concrete product | 08/23/2011 |
| D643940 | Molded surface of a concrete product | 08/23/2011 |
| D643939 | Molded surface of a concrete product | 08/23/2011 |
| 7972128 | Mold and process for forming concrete retaining wall blocks A mold and a process for non-manually cleaning the undercut along the bottom edge of the division plate which with a pallet under the mold defines a lip-forming subcavity results in a dry cast concrete block with an inside lip radius that is controlled to be within ... | 07/05/2011 |
| 7967001 | Block splitting assembly and method A masonry block that is produced from a workpiece that is split in a block splitting assembly which uses any of a variety of projections to supplement or replace the action of the splitting blade in splitting and dressing the workpiece. The resulting masonry block h... | 06/28/2011 |
| D639456 | Molded surface of a concrete product | 06/07/2011 |
| D639455 | Molded surface of a concrete product | 06/07/2011 |
| D638957 | Molded surface of a concrete product | 05/31/2011 |
| D638553 | Molded surface of a concrete product | 05/24/2011 |
| D636094 | Molded surface of a concrete product | 04/12/2011 |
| D636093 | Molded surface of a concrete product | 04/12/2011 |
| 7908799 | Wall blocks, wall block kits, walls resulting therefrom, and methods Concrete wall blocks are described with features facilitating use of the wall blocks to construct each of: a wall section with set back; and, a vertical wall without set back. Wall blocks, kits or sets of wall blocks, and wall sections with various sized blocks are ... | 03/22/2011 |
| D634028 | Sculpted cap block | 03/08/2011 |
| D632810 | Molded surface of a concrete product | 02/15/2011 |
| D632809 | Molded surface of a concrete product | 02/15/2011 |
| D632808 | Molded surface of a concrete product | 02/15/2011 |
| D632807 | Molded surface of a concrete product | 02/15/2011 |
| D632806 | Molded surface of a concrete product | 02/15/2011 |
| D631984 | Molded surfaces of a concrete product | 02/01/2011 |
| D631983 | Molded surface of a concrete product | 02/01/2011 |
| D631982 | Molded surface of a concrete product | 02/01/2011 |
| 7870853 | Block splitting assembly and method The invention relates to equipment and related methods for producing concrete blocks. The equipment and methods described herein utilize splitting assemblies having larger projections and/or smaller projections or peaks disposed on at least one side of a splitting l... | 01/18/2011 |
