Abstract: Exemplary embodiments include a safety eyewear including: a frame; a flexible cable attached to the frame; and a strap attached to the flexible cable operable at an attachment point for securing the safety eyewear to a user, wherein the flexible cable permits the attachment point to be moved to accommodate a variety of strap configurations.
Type:
Grant
Filed:
June 6, 2007
Date of Patent:
February 2, 2010
Assignee:
3M Innovative Properties Company
Inventors:
Glen Stanley, Richard W. Canavan, Solomon Marini
Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
Abstract: A particulate monitor includes a housing, an air-moving device coupled to the housing, and an air passageway disposed at least partially within the housing. The air-moving device is operable to create an airflow through the air passageway. The particulate monitor also includes a real-time measuring device positioned at least partially within the housing and in fluid communication with the air passageway and a particulate collection device positioned at least partially within the housing and in fluid communication with the air passageway. The collection device is positioned downstream of the real-time measuring device.
Type:
Grant
Filed:
August 28, 2007
Date of Patent:
December 15, 2009
Assignee:
Quest Technologies
Inventors:
Patrick James Kilps, Michael Gene Wurm, Thomas Edward King, Paul Ezekial James, Steven E. Michalski
Abstract: Method, apparatus, and system are utilized for testing the performance of a gas monitor against predetermined monitor characteristics to determine if performance of the gas monitor is validated in a manner whereby testing gas is directly delivered to the gas sensor.
Abstract: A protective automatic darkening filter construction 10 includes two low twist liquid crystal cells 26, 30 interspersed between a series of offset polarizers 24, 28, 32. The resulting construction provides improved homogeneity in the dark state as viewed by the user over a large viewing angle. By reducing variations in shade, visibility through the filter may be improved.
Type:
Grant
Filed:
March 9, 2005
Date of Patent:
January 13, 2009
Assignee:
3M Innovative Properties Company
Inventors:
Kristina M. Magnusson, Kenneth Jarefors, Per-Olav Dahlin