摘要:
A molded plastic pallet has a base comprised of steel beam-reinforced thermoplastic rails reinforced with steel beams, vertical columns, a frame on top of the columns, and a textured metal deck. The metal deck preferably comprises a flange which is attached to the frame or to a subframe which is within the opening of the frame. The edge of the deck is inset from the outer edge of the frame, and the periphery of the top of the frame is exposed. The frame preferably has one or more impact absorbing zones at the bridge portions of the frame, which span the fork openings between adjacent columns.
摘要:
One embodiment of the present invention provides a system that facilitates cache coherence with adaptive write updates. During operation, a cache is initialized to operate using a write-invalidate protocol. During program execution, the system monitors the dynamic behavior of the cache. If the dynamic behavior indicates that better performance can be achieved using a write-broadcast protocol, the system switches the cache to operate using the write-broadcast protocol.
摘要:
A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls which are perforated with slots which slope downwardly, running from interior to exterior of the chamber. The slot height and or wall thickness vary with slot elevation from the base, to achieve a desired minimum Soil Threshold Angle in the slots, where said Angle parameter relates to resistance to entry of surrounding soil. Slotted wall thickness is less than about two times the thickness of the basic chamber wall thickness elsewhere. The chamber has properties and performance approximating prior art chambers, but has substantially less normalized weight and total weight.
摘要:
A tie ejector distributes new ties to be installed along a railway track, from a tie distribution car of a rail carried tie exchange vehicle. New ties are moved from a gondola cars to a conveyor at the rear of the tie distribution car leading to the tie ejector. The tie ejector has an endless drive chain on rotatable sprockets on a frame. Two striker plates are attached to the drive chain at opposite ends and opposite sides so that they cannot interfere. One is always on the rear when the other is on the front ejecting a tie by propelling it laterally relative to the conveyor. The trajectory of the tie is adjustable using a movable deflection shield attached to the frame, specifically to adjust the downward deflection angle. The tie ejector can be manually actuated by an operator while the tie distribution car is advanced, to drop ties next to the track at a predetermined and repeatable position relative to passing empty tie cribs.
摘要:
A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness of the sidewall portion which defines the slots may vary with slot elevation from the base. The chambers are free of interior and exterior strengthening ribs. They provide high interior storage volume and high leaching area in combination with low mass or weight of plastic material. An exemplary 34 inch wide chamber has more than 1.5 cubic feet of water storage volume per foot, less than 4 pounds weight of thermoplastic material per foot, and at least 30 square inches of slot-provided leaching area per foot.
摘要:
A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defines the slots may vary with slot elevation from the base, so that a perforated sidewall configuration is achieved which resists entry of surrounding soil. In one embodiment, the slotted sidewall has slots with all the same slot openings and the wall thickness decreases with elevation.
摘要:
A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defines the slots may vary with slot elevation from the base, so that a perforated sidewall configuration is achieved which resists entry of surrounding soil.
摘要:
The top of a thermoplastic pallet has a rectangular frame to which the pallet deck is directly or indirectly attached. The edge of the deck is spaced apart from the outer edge of the frame. The frame comprises bridge parts which span the openings between columns into which forks may be inserted for lifting of the pallet. The plastic bridges are designed for absorbing horizontal impact loads. Each bridge has several lengthwise impact absorber zones of differing cell configuration and thus differing compliance to horizontal impact loads. A metal stay runs along the outer edge of each bridge, for distributing impact forces, and for improving the resistance of the pallet top to impact loads. A stay may be anchored by its ends at the opposing ends of a bridge, and or along its length by engagement of perforations in the stay with plastic features distributed along the length of the edge of the bridge.
摘要:
A system and method for selective disconnection of electrical service to a customer via commands transmitted on a communications network between a server in communication with an electric utility and a client device at a customer service point. A customer profile is generated including at least connection information for a plurality of controllable devices within the service point. A request is received from the electric utility to generate a selective disconnect event at the service point based on the customer profile. The selective disconnect event is communicated to the client device at the service point. The selective disconnect event is sent to at least one controllable device at the service point.
摘要:
A molded plastic pallet, connects opposing sides of the pallet bottom, has a cross rail that has a crowned surface. Thus, should the wheels of a pallet jack rest on the surface of the rail as the jack's fork prongs are inserted under the pallet, they will be urged to roll off the rail, to avoid damage to the pallet which could occur when the jack lifts the pallet.