Abstract:
An electromagnetic door lock assembly (30) includes a first portion (32) supported relative to hoistway doors (22) and a second portion (34) supported for movement with an elevator car (24). The first and second portions cooperate so that electromagnetic interaction between them unlocks a set of hoistway doors (22) for access to the car (24), for example. In disclosed embodiments, a first portion (32) of the actuator has at least one stationary electromagnetic portion (36A, 36B) and at least one moveable portion (38). The second portion (34) that moves with the car (24) includes at least one stationary electromagnetic portion (44). Magnetic interaction between the first and second portions (32, 34) causes selected movement of the moveable portion (38) for selectively locking or unlocking the doors (22).
Abstract:
An elevator door lock includes a locking member (40) that moves into an unlocked position responsive to contact with at least one door coupler member (32, 34). In disclosed examples, the locking member (40) comprises an arm that is pivotally supported by one of the door coupler members (34). The other coupler member (32) contacts a contact portion (42) on the locking member (40) to move the locking member into an unlocked position as the first coupler member (32) moves toward the second coupler member (34). In a disclosed example, a magnetic coupling between the coupler members maintains the locking member (40) in an unlocked position.
Abstract:
An elevator system (20) includes a cab (22) supported for movement within a hoistway. A tension device (44) remains close to one end (26) of the hoistway. The tension device (44) maintains a desired tension on a load bearing member (30) that supports a weight of the cab (22) and moves to achieve a desired placement of the cab within the hoistway. The load bearing member (30) extends from the first end of the hoistway toward the cab, wraps at least partially around a first sheave (36) supported for movement with the cab, extends from the first sheave (36) toward the first end (24) of the hoistway, wraps at least partially around a second sheave (38) supported near the first end of the hoistway, extends from the second sheave toward a second end (26) of the hoistway, wraps at least partially about a third sheave (40) supported near the second end of the hoistway, extends toward the cab from the third sheave, wraps at least partially around a fourth sheave (42) supported for movement with the cab, and extends from the fourth sheave toward the second end of the hoistway where it is secured to the tension device (44).
Abstract:
A fire suppression sprinkler assembly coupled to a mounting surface includes a sprinkler having a heat responsive element arranged adjacent a first end. A cover plate is positioned adjacent the heat responsive element and includes a thermally conductive cover layer. A reflective shield has a reflective interior surface. The reflective shield is positioned substantially opposite the cover plate adjacent the first end of the sprinkler such that heat reflects from the top plate towards the heat responsive element.
Abstract:
A fire suppression sprinkler assembly coupled to a mounting surface includes a sprinkler having a heat responsive element arranged adjacent a first end. A cover plate is positioned adjacent the heat responsive element and includes a thermally conductive cover layer. A reflective shield has a reflective interior surface. The reflective shield is positioned substantially opposite the cover plate adjacent the first end of the sprinkler such that heat reflects from the top plate towards the heat responsive element.
Abstract:
An exemplary fire suppression system includes a sprinkler nozzle. At least one conduit is connected to the nozzle for delivering a fire suppression fluid to the nozzle. The conduit and the nozzle establish a discharge path. A pneumatically driven pump is connected with the conduit for pumping fluid into the conduit. A gas source provides pressurized gas to the pump for driving the pump. The gas source also provides gas to the discharge path for achieving a desired discharge of the fluid from the nozzle. A controller selectively controls at least one of (i) the gas provided to the pump, which controls the fluid pressure in the conduit, or (ii) the gas provided to the nozzle or the conduit, which controls the gas pressure delivered to the nozzle.
Abstract:
The present invention relates to a door frame assembly (22) for an elevator assembly which comprises a head jamb member (24), a sill member (26), a plurality of side members (28) which extend between the head jamb member (24) and the sill member (26), and at least one adjuster (30) which is operative to selectively adjust a position of the sill member (26) relative to a landing surface (18). A method of mounting a door frame assembly (22) that includes securing a portion of the door frame assembly (22) to a landing surface (18) and subsequently adjusting a position of the sill member (26) relative to the landing surface (18) all from the landing surface side of an opening to a hoistway is disclosed.
Abstract:
The present invention relates to a door frame assembly (22) for an elevator assembly which comprises a head jamb member (24), a sill member (26), a plurality of side members (28) which extend between the head jamb member (24) and the sill member (26), and at least one adjuster (30) which is operative to selectively adjust a position of the sill member (26) relative to a landing surface (18). A method of mounting a door frame assembly (22) that includes securing a portion of the door frame assembly (22) to a landing surface (18) and subsequently adjusting a position of the sill member (26) relative to the landing surface (18) all from the landing surface side of an opening to a hoistway is disclosed.
Abstract:
An elevator door assembly includes a door (12) supported on a track (22) for movement relative to a car frame (16). The track (22) guides the door (12) along a door path between open and closed positions. The track (22) includes a first track portion (24) that defines a generally straight path segment and a second track portion (26) that defines a generally curved path segment. A seal (20) is positioned between the door (12) and the car frame (16). As the door (12) moves from the straight path segment to the curved path segment, the door (12) applies a compressive sealing force against the seal (20).
Abstract:
An elevator door assembly (20) includes an electromagnet (30) use as part of a door coupler for coupling elevator car doors (24) to elevator hoistway doors (26). A disclosed example includes an electromagnet core (40) with a gap (50) in one of four sides of the core. The gap (50) directs and concentrates magnetic flux of the electromagnet (30) to concentrate an attractive force for coupling the electromagnet (30) with a vane (32). Disclosed examples includes unique geometric and dimensional relationships to achieve a desired goodness factor.