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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Application No. | Application Title | Issue Date |
| 20090100904 | HAMMER FOR A CHARPY PENDULUM A hammer for a Charpy pendulum, comprising a body including a head and an arm, wherein the arm is equipped with a portion for attachment to an end opposite to that of the head and wherein the head has a general C-shape, with a concave part in which an area of impact is ... | 04/23/2009 |
| 20080256685 | Football Helmet, Testing Method, and Testing Apparatus In one embodiment, a method for testing a helmet comprising the steps of: placing a strike helmet on a first headform; placing a target helmet on a second headform, colliding the strike helmet against the target helmet; and measuring the acceleration of the second headf... | 10/23/2008 |
| 20080178655 | Impact test apparatus An apparatus for performing an impact test of an object of test by use of a hammer is disclosed. The apparatus includes a pendulum arm swingable in an up-down direction in response to rotation of a rotary cam. The rotary cam is driven to rotate by a rotational drive uni... | 07/31/2008 |
| 20080105028 | METHODS AND APPARATUS FOR MEASURING IMPACT TOUGHNESS OF A TIE ROD END A method is provided for measuring impact toughness of a tie rod end through use of a pendulum-type impact testing machine. The method includes attaching a first member of the tie rod end with respect to a base of the pendulum-type impact testing machine. The pendulum-t... | 05/08/2008 |
| 20060005606 | Impact test apparatus and impact test method An impact test apparatus includes a holding device for holding a test piece at an arbitrary holding force, an impact applying device for applying an impact force to the test piece held by the holding device, a force sensor for sensing the impact force applied to the tes... | 01/12/2006 |
| 20050204800 | HEAD RESTRAINT EVALUATOR A test assembly for evaluating vehicle head restraints comprises a carriage adapted to be coupled to a drive member capable of moving the test assembly, a head restraint coupled to the carriage and a manikin assembly having a head portion and a neck portion with an uppe... | 09/22/2005 |
