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| Number | Title | Issue Date |
| 7242770 | Secure encryption/decryption for elevators This system relates to a secure encryption/decryption protocol for elevator displays and controls. The protocol uses an algorithm to scramble information before transmission and reassemble it after transmission. The system uses at least one block of data assembled i... | 07/10/2007 |
| 7174973 | Power tool interface This interface is an apparatus for controlling a power supply delivering power to a DC powered tool. The interface is connected between the DC power supply and the DC tool wherein the interface is configured to read signals from the tool and control the power suppli... | 02/13/2007 |
| 7089080 | Pulse tool controller This is a system for monitoring and controlling a compressed air driven, pulse tool. The system includes a means for measuring air pressure supplied to a pneumatic pulse tool and converting the air pressure into an electrical signal representative of the air pressur... | 08/08/2006 |
| 6871153 | Dynamic calibration qualifier This dynamic calibration qualifier relates to a tool monitor and assembly qualifier that verifies that the correct number of fasteners have been properly installed into an assembly. The device monitors an analog signature created by the tool and has the ability to d... | 03/22/2005 |
| 6810335 | Qualifier This qualifier uses multiple thresholds and multiple timers to perform its operations. This assembly qualifier is a counting apparatus that monitors either the pressure of a pulsing air tool. The qualifier includes a microprocessor that is configured to indicate a p... | 10/26/2004 |
| 6567754 | Qualifier This qualifier uses multiple thresholds and multiple timers to perform its operations. This assembly qualifier is a counting apparatus that monitors either the pressure of an air tool, the current of an electrical tool or the torque of a mechanical wrench... | 05/20/2003 |
| 6450299 | Load measuring for an elevator car This design provides an elegant solution to elevator load weighing applications. The purpose of this control is to provide meaningful feedback pertaining to the load that is in the elevator cab. This system can accept any one of four different types of se... | 09/17/2002 |
| 6349266 | Remote control qualifier This remote control qualifier, typically a radio frequency (RF) qualifier, is an apparatus for monitoring a mechanical torque wrench with torque switch. The torque wrench includes a means for stimulating the torque switch wherein the torque switch can pro... | 02/19/2002 |
| 6347554 | Torque transducer assembly This assembly is a torque measuring device that measures the torque output a tool is producing. A hollow torsion tube connects the tool to a reaction arm through the assembly. A torque transducer is attached to the side of the torsion tube. The ends of th... | 02/19/2002 |
| 6055484 | Tool monitor and assembly qualifier This counting apparatus is a tool monitor and assembly qualifier that verifies that the correct number of fasteners have been properly installed into an assembly. When used in conjunction with a pressure tool, proper fastener torque and count can be verif... | 04/25/2000 |
| 5937370 | Tool monitor and assembly qualifier This counting apparatus is a tool monitor and assembly qualifier that verifies that the correct number of fasteners have been properly installed into an assembly. When used in conjunction with a pressure tool, proper fastener torque and count can be verif... | 08/10/1999 |
