Otis Elevator Company

Other

Michael C Lang

James Thompson Beals

Paul Bennett

Mark Steven Thompson

Dat T Nguyen

Philip H McCluskey

David W McKee

Fred J Lussier

Richard J Ericson

Joseph Al LeDoux

Bruce P Swaybill

Amir Lotfi

Anthony Cooney

Samuel C Wan

Sandeep Sudi

Bruce St Pierre

Martin J Hardesty

Raymond Zatorski

Jacobus Benjamin Legez

Joseph A L LeDoux

Tom E Glassey

Tim Lang

An illustrative example embodiment of an elevator system includes a machine including a motor and a brake. The machine is configured to selectively cause movement of an elevator car. At least one vibration sensor situated near the machine provides an indication of operation of the machine to indicate at least stops and starts of the machine associated with stopping and starting movement of the elevator car.

Elevator monitoring using vibration sensors near the elevator machine

Portable water delivery apparatuses and methods of use are disclosed herein. An example apparatus includes a portable frame trailer having: a base; and at least two wheels, a tank configured to be transported on the portable frame trailer, a pump for delivering water in the tank to an interface, means for coupling the pump to a water input in a structure, and a portable power supply delivering power to the pump.

Portable water supply apparatuses and methods of use

A hoist tool for lifting a machine assembly in an elevator to an installation position is mounted to a machine beam which also supports the machine assembly. The hoist tool is thus mounted in a location where it does not require any additional axial space. Preferably, the hoist tool is mounted to one lateral side of the machine assembly, and within an axial extension of the machine assembly downwardly from the machine beam into the hoistway.

Integrated elevator installation hoist tool

An elevator safety brake for stopping an elevator car is provided with a brake shoe having a molybdenum alloy friction surface for contacting an elevator guide rail surface to provide a stopping force. The molybdenum alloy contains 99.4 weight percent molybdenum, 0.5 weight percent titanium and 0.1 weight percent zirconium. The friction surface of the brake formed from the alloy exhibits a consistent high friction and low wear suitably accommodating high speed, high load elevators installed in very tall buildings.

Molybdenum alloy elevator safety brakes

An elevator safety brake for stopping an elevator car is provided with a brake shoe having a carbon-carbon composite friction surface for contacting an elevator guide rail surface to provide a stopping force. The friction surface of the brake formed from the carbon-carbon composite exhibits a consistent high friction and low wear suitably accommodating high speed, high load elevators installed in very tall buildings.

Carbon--carbon composite elevator safety brakes

An elevator safety brake for stopping an elevator car is provided with a brake shoe having a fused sprayed friction coating for contacting an elevator guide rail surface to provide a stopping force. In a preferred embodiment, the coating is obtained by plasma spraying an admixture of 85 weight percent nickel-chromium alloy particles and 15 weight percent tungsten carbide particles on a substrate. The plasma sprayed admixture is fused. The fused sprayed friction surface of the brake exhibits a consistent high friction and low wear suitably accommodating high speed, high load elevators installed in very tall buildings.

Elevator safety brake having a plasma sprayed friction coating

An elevator safety brake is provided comprising two cantilevers, a pivot, a spring, and a hold-off-engagement linkage. In one embodiment, the hold-off-engagement linkage is comprised of two upper struts, and two lower struts. When it is desired to slow or stop the elevator via the safety brake, the lower struts move from a first position in which the lower struts are substantially in alignment with one another and the cantilevers are in an open position, to a second position in which the lower struts are not substantially in alignment with one another and the cantilevers are in a closed position. When the cantilevers are in the closed position, the spring exerts a force via the cantilevers on the guide rail in order to decelerate the elevator.

Safety brake

Movement of an elevator cab drive sheave is controlled by a multiple disc brake assembly which is operably connected to the output shaft and sheave of the elevator drive machine. The disc brake assembly can act as an upward or downward safety brake, and can also serve as the operating brake for normal operation of the elevator. The brake assembly can be fitted onto a substantially conventional existing elevator system, and its operation is not affected by any gear degradation in the machine drive gears.

Disc brake elevator drive sheave

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Naugatuck, CT, United States of America

Michael C Lang