Abstract:
An elevator system (10) has multiple machines (18, 20) and flat ropes (16) is disclosed. In one embodiment, the machines (18, 20) are engaged in a series manner with a single set of ropes (16) to drive the car (12) and counterweight (14). In another embodiment (Fig 2), each machine is engaged with a separate set of ropes to drive the car and counterweight.
Abstract:
Movement of an elevator cab drive sheave is controlled by a 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 retrofitted onto an existing elevator system, and its operation is not affected by any gear degradation in the machine drive gears.
Abstract:
A tension member termination device (10) optimized for terminating flexible flat tension members, the device including a socket (30) with a compression portion and a bulbous portion and a compression plate (80, 96) on each side of the compression portion fastenable by fasteners (100) extending through all of these features. The device (10) provides a pathway for the tension member through the device and upon torquing the fasteners (100) reliably secures the tension member while avoiding deleterious pressure and stress therein. The invention also provides a safety clamp for optional use with the invention.
Abstract:
An elevator system includes an elevator hoistway defined in a surrounding structure, such as a building. An elevator car and counterweight are located in the hoistway. A drive motor and associated drive sheave are disposed at a bottom portion of the hoistway. The drive motor is coupled to the elevator car and the counterweight via at least one flat rope for moving the elevator car upwardly and downwardly along the hoistway.