摘要:
A continuous carburizing furnace system is disclosed having at least two series-connected rotary furnaces. The rotary carburizing furnace, a rotary equalizing furnace, and a rotary diffusion furnace which may be included between the carburizing and equalizing furnaces, allow trays of parts to be discharged from any position at any time by suitable rotation of their hearths, thus allowing parts with different cycle times to be run simultaneously in each rotary furnace. Each donut-shaped rotary furnace includes one or more captive chain type pusher mechanisms mounted in vertical fashion within a central area or hole, and the rotary carburizing furnace is multi-zoned and includes wall-mounted fans for uniform circumferential control of the gaseous atmosphere within its annular chambers. Two different quenching apparatuses and a slow cool assembly adjacent multiple outlets of the equalizing furnace permit the use of different cooling/quenching processes on selected parts, and parts may also be returned from the slow cool assembly to the equalizing furnace for reheating.
摘要:
A damping structure is disclosed to float freely within the envelope of a waterbed mattress. The damping structure comprises a bottom panel of flexible sheet material with a number of tubular structure extending upwardly therefrom. Each tubular structure is coupled to the bottom panel with a portion of the bottom panel closing the bottom end of the tubular structure. The tubular structure has side walls and is closed at a top end by a top panel. The top panels are buoyant and float the tubular structures upwardly so as to suspend the bottom panel spaced above the bottom sheet of the waterbed envelope. Ports are provided through the top panels, side walls and bottom end of the tubular structures and serve to permit fluid flow into and out of the tubular structures to assist in facilitating fluid displacement within the mattress and dampen wave motion therein. The ports through the side walls are open to permit flow even when the mattress is compressed in use. The ports through the top panel are normally closed by engagement with the top sheet of the envelope and the ports through the bottom panel become closed upon compression of the mattress by engagement of the bottom panel with the bottom sheet of the envelope. The novel configuration of the bottom panel, tubular structures, and ports therethrough provides improved wave dampening.
摘要:
A system for controlling the bed level of a fluidized bed independent of the density of the bed material using a minimum number of pressure sensors is disclosed. A pressure sensor is positioned at the base of the bed, at approximately eight feet above the distributor plate, and at one or more intermediate locations therebetween. The measurements from the foregoing sensors are selectively processed through the use of a specific logic arrangement to produce an output signal representative of the bed level of the fluidized bed.
摘要:
An apparatus adapted for vehicle frame and chassis repair having a vehicle bed with horizontal portions for fixedly anchoring a damaged vehicle preparatory to repair and particularly straightening of the vehicle. The bed tilts toward the ground for mounting and removal of the vehicle. A plurality of pull tower assemblies are movably mounted with respect to the bed. Each pull tower assembly includes an upright tower column and a pivot arm connected to the bed. A power head assembly rotatably mounted on the top of the column includes a frame and a hydraulic actuator with a first portion fixed to the frame and a second portion horizontally movable with respect to the frame. A flexible tension member has a first end connected to the frame and a second end connectable to the vehicle at a remote location for exertion of a pulling force. A portion of the flexible tension member is trained over guide means connected to the second portion of the hydraulic actuator whereby movement of the second portion of the hydraulic actuator causes a pull to be exerted on the flexible tension element and transmitted to the vehicle. The pull tower column is mounted on the movable end of the pivot arm. The fixed end of the pivot arm is pivotally assembled to a tower pivot mount secured to the bed assembly. Means are provided for locking the tower pivot arm in place with respect to the bed assembly.
摘要:
In a continuous drum mix asphalt plant, dust is exhausted from an intermediate zone of the drum mixer between its drying and mixing zones. The dust is exhausted radially through openings into a collection housing, which communicates with a dust collector and exhaust blower. An end housing at the discharge end of the drum communicates with the same dust collector and blower. Dampers are provided to control the relative proportion of air exhausted from the drum through the respective housings. Aggregate deflectors on the interior wall of the drum at the intermediate zone allow air and dust to flow while inhibiting the flow of aggregate. The collection housing surrounding the intermediate zone is of a size such as to produce a reduction in the velocity of the air as it passes out of the drum. Consequently, it serves as a knock-out box for the collection of larger particles which are carried out of the drum, but which settle out of the air stream as a result of the velocity decrease. These collected particles are reintroduced into the drum by scoops on the exterior of the drum. These scoops are also used for the introduction of recycled asphaltic concrete.
摘要:
Systems and methods for managing payments. An invoice is generated based on a first invoice detail from a first participant and the generated invoice is displayed to a second participant. The system receives a modification of the first invoice detail from the second participant along with a comment associated with the modification. The first invoice detail, the modification, and the comment are stored to the computer readable memory and a payment between the participants is facilitated based at least in part on the modification.
摘要:
Systems and methods for managing a construction payment process wherein a higher degree of functionality is provided to primary users and only a limited subset of functionality is provided to sub-tier contractors. One construction of the system is configured to receive an electronically signed document and a request for payment from the sub-tier contractor. The request for payment is presented to a first primary user who is a contractual parent of the sub-tier contractor. When approval of the request for payment is received, a payment is initiated from a project payor to the sub-tier contractor. In some embodiments, the project payor is a contractual grandparent of the sub-tier contractor and a contractual parent of the first primary user.
摘要:
The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1,2,3,3,3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating (245eb) to produce (1234yf).
摘要:
A networked computer system for acquiring prequalification information and comparing that prequalification information to a set of minimum requirements for a plurality of reviewing organizations. In some embodiments, the networked computer system also facilitates the project bidding process between prequalified organizations. The networked computer system receives bids from a prequalified bidding organization and assigns a rank to the bidding organization relative to other prequalified bidding organizations. In some embodiments, the networked computer system assigns a rank to the bid proposal based, in part, on the bidding organization's prequalification information and the information from the bid proposal.
摘要:
A method of making a microelectronic package includes providing a first substrate having a top surface, providing a second substrate having a top surface including a plurality of conductive pads, a bottom surface remote therefrom and an opening extending between the top and bottom surfaces, and securing the second substrate over the first substrate so that the bottom surface of the second substrate confronts the top surface of the first substrate, wherein the first and second substrates have coefficients of thermal expansion that are substantially similar to one another. The method also includes placing a microelectronic element having a front face with contacts and a back face remote therefrom in the opening of the second substrate and securing the microelectronic element over the first substrate so that the back face of the microelectronic element confronts the top surface of the first substrate, and electrically interconnecting the contacts of the microelectronic element with the conductive pads of the second substrate.