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John W. Koshak

John W. Koshak is head and founder of Elevator Safety Solutions, Inc., and a member of Elevator World, Inc.’s Board of Directors and Technical Advisory Group. He is also current president of the International Association of Elevator Consultants. Directly prior to reactivating his company in September 2008, Koshak served as director of Codes and Standards for North America for thyssenkrupp Elevator. He was formerly in research at thyssenkrupp Research, Innovation and Design. Koshak got his start in the industry in 1980 at Westinghouse Elevator Co. and has worked for Dover Elevator, Amtech Elevator and Adams Elevator Equipment Co., where he was vice president of Technical Support. He was a National Elevator Industry Educational Program instructor from 1982 to 1991, designed the LifeJacket hydraulic-elevator safety and holds several patents for elevator-component designs. Koshak is a member of the ASME A17 Standards Committee and a past chairman of the Elevator Escalator Safety Foundation.

SARS-CoV-2 Mitigations in Elevators

SARS-CoV-2 Mitigations in Elevators

By John W. Koshak | May 1, 2021
Posted in |

Identifying the characteristics of the coronavirus and elevator enclosure and examining the technical solutions for sanitizing the elevator

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Traction Sheave Maintenance

Traction Sheave Maintenance

By John W. Koshak | April 1, 2021
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How to identify and prevent traction sheave damage due to unequal rope tension

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Traction-for-Field-Personnel-Part-Two

Traction for Field Personnel, Part Two

By John W. Koshak | September 1, 2017
Posted in |

Conclusion of series examines components used in electric elevator systems that provide safe traction. In Part 1 (ELEVATOR WORLD, August 2017), we learned the design basics of traction, starting with friction up to how a designer establishes the required traction and then uses angle of wrap and groove design to ensure there is always adequate…

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Traction for Field Personnel, Part One

By John W. Koshak | August 1, 2017
Posted in |

Unintended loss of traction, resulting from component deterioration, for example, is very hazardous and can allow an elevator to move uncontrolled. Four factors determine and control traction: The traction ratio of car and counterweight The area of contact of hoist ropes on the drive sheave The coefficient of friction/friction factor between the hoist ropes and…

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Maintenance Control Program Changes

By John W. Koshak | March 1, 2016
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Learn about the MCP and updates made to it since 2010. In the world of elevators, manufacturers design newer components to require less maintenance. Replacing an older elevator controller, full of heat-generating relays, with a solid-state elevator controller with electronic components, devices, software and functions should reduce the maintenance time but not eliminate maintenance altogether.…

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Elevator-Door-Force-Figure-3

Elevator Door Force

By John W. Koshak | November 1, 2015
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Maladjustment of elevator door controllers can cause injury to persons if impacted by a closing door with a high speed. Persons can also be entrapped or crushed by a door system with too much door closing force. Education and vigilance when performing elevator door adjustment and maintenance is critical for safety. Door-related incidents are estimated…

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Wind-Turbine-Elevator-Committee-Meeting

Wind Turbine Elevator Committee Meeting

By John W. Koshak | July 1, 2015
Posted in |

Progress made on new global standard at Elevator World. photos by Lee Freeland The ASME A17 Wind Turbine Elevator (WTE) Committee met at the Mobile, Alabama, headquarters of Elevator World, Inc. on May 5-6. Members were given a tour of the facilities. Most had never seen how a magazine is created and the talent required,…

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Elevator-Hoistway-Doors

Elevator Hoistway Doors

By John W. Koshak | April 1, 2015
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Failures of door guiding means and door safety retainers on horizontally sliding doors can cause catastrophic injury to someone falling through a hoistway door into the hoistway when the elevator is not present. Knowledge of the significant elements of the design when performing elevator door installation and maintenance is critical for safety. This Continuing Education…

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AECO Certification as Applied to a Wind-Turbine Tower Elevator

By John W. Koshak | October 1, 2012
Posted in | |

A real-world example of the process, methodology and ASME A17.7/CSA B44.7: Performance-Based Safety Code for Elevators and Escalators’ ability to ensure superior safety Much has been written about ASME A17.7/CSA B44.7: Performance-Based Safety Code for Elevators and Escalators, but little written about its practical use with real-world examples of the process, methodology and its ability…

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Wind-Turbine-Tower-Elevators--Part-II

Wind Turbine Tower Elevators, Part II

By John W. Koshak | May 1, 2012
Posted in |

A continued discussion on the codification processes of wind turbine tower elevators in North America At the 2008 American Wind Energy Association (AWEA) Health and Safety Workshop in Denver, OSHA requirements were often mentioned in the context of elevators. The reference was used to find a link between many varied standards and codes, yet one…

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