Product Description

Dover Elevator, headquartered in Memphis, Tennessee and built up from the mid-1950s onward, became one of the leading U.S. elevator manufacturers by the 1970s and 1980s, supplying geared traction, gearless, and hydraulic elevator equipment to commercial, institutional, and mid-rise residential buildings across North America. Dover was acquired by Thyssen in 1999 to form ThyssenKrupp Elevator.

Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that Dover Elevator hoist-machine brakes and hydraulic holding brakes used asbestos-bearing friction linings during the decades when asbestos was the industry-standard elevator friction material. Plaintiffs allegedly encountered these linings during original installation, periodic brake adjustment, brake dust cleanup in machine rooms, and full shoe relining performed on scheduled maintenance cycles.

Asbestos Content

Plaintiffs alleged that Dover Elevator brake assemblies contained asbestos in the following roles:

  • Woven asbestos brake fabric — riveted to steel brake shoes on geared traction hoist machines.
  • Molded asbestos-composition friction pads — used on hydraulic holding brakes and later disc-brake designs.
  • Brake dust residue — deposited on machine-room floors, brake covers, and adjacent electrical panels by normal service wear.
  • Replacement friction parts — plaintiffs alleged that Dover parts and service literature specified asbestos-bearing linings for routine relining well into the late 1970s.

Workers Exposed

  • Elevator constructors (IUEC) — new installation of Dover hoist machines and full brake-shoe relining during modernization.
  • Elevator mechanics and adjusters — brake adjustment, machine-room dust cleaning, and shoe replacement in commercial buildings.
  • Building maintenance mechanics — supporting elevator brake work in office buildings, hotels, and hospitals.
  • Millwrights and industrial mechanics — freight-elevator brake service in warehouses and manufacturing facilities.
  • Bystanders — building engineers and electricians sharing enclosed elevator machine rooms during brake service.

Take-home exposure was alleged where workers carried asbestos fibers home on contaminated work clothing.