Abstract: This invention relates to an arrangement for sensing a change in pressure from a first state to a second state. This is function in a grid system which has a fault undetected by flow measurement devices. This arrangement consisting of remote monitors powered by a communication system with a stand alone power supply which will sense a significant change in pressure. The monitors, with time delay built in, transmit this change in status to a central host computer for grid system analysis. In normal means for stabilizing the grid system, a remote signal is sent from the host computer to an isolation device for isolating the fault from the remainder of the network system. Subsequently, the host computer notifies the operating department with written notice of the isolation action.
Abstract: A camper back assembly for attachment to a boat includes a plurality of strut members having one end anchored to the transom of the boat, with the end opposite ends of the strut members anchored to the awning or boat structure. The length of the strut members is greater than the linear distance between the anchor points on the boat transom and the awning to provide a dome-like support for a cover portion which is releaseably secured to the boat.
Abstract: Conductor system for warehouse cranes or transporters servicing warehouse shelving. Each shelving unit contains a conductor with conductive elements which have been mounted in a vertical plane. At least one warehouse crane or transporter and an assembly carrier is coupled respectively to a warehouse crane or transporter and a collector trolley is connected by means of opposite and preferably shaped leaf springs to an assembly plate attached to the assembly carrier of the warehouse crane or transporter. Each collector trolley contains carbon brushes and wheels. One end of the leaf springs is attached to the assembly plate and the other end of the leaf springs is attached to a mounting plate carrying the carbon brushes. The leaf springs press the wheels of the collector trolley onto the conductor and the carbon brushes of each collector trolley onto the conductor's conductive elements. Collector trolley suitable for use in such conductor systems.
Type:
Grant
Filed:
April 16, 1999
Date of Patent:
September 11, 2001
Assignee:
Woodhead Industries, Inc.
Inventors:
Corstiaan Jacob Van Zijverden, Andre Pieter Willem Van Zaalen
Abstract: Apparatus detects defects and microstructural changes in hard translucent materials such as ceramic bulk compositions and ceramic coatings such as after use under load conditions. The beam from a tunable laser is directed onto the sample under study and light reflected by the sample is directed to two detectors, with light scattered with a small scatter angle directed to a first detector and light scattered with a larger scatter angle directed to a second detector for monitoring the scattering surface. The sum and ratio of the two detector outputs respectively provide a gray-scale, or “sum” image, and an indication of the lateral spread of the subsurface scatter, or “ratio” image. This two detector system allows for very high speed crack detection for on-line, real-time inspection of damage in ceramic components.
Type:
Grant
Filed:
June 11, 1999
Date of Patent:
September 4, 2001
Assignee:
University of Chicago
Inventors:
William A. Ellingson, Judith A. Todd, Jiangang Sun
Abstract: A tillage apparatus performs shallow tillage with leading tillage discs followed by chisel plows with winged points performing primary tillage in strips of untilled soil left by the forward discs. The points lift the soil and roll it laterally. Levelers follow the plows to leave a smooth surface and reduce the soil preparation needed for planting the following season.
Abstract: Structural insulated panels having an inner insulating core and first and second outer facings disposed on opposed surfaces of the insulating core are securely attached to a structural member such as 2X stick structural members in a building structure. A strip of tape is wrapped around the structural member and opposed ends of the tape strip are adhesively bonded to the opposed outer facings of the panel. The tape strip may extend the full height or width of the panel to provide a secure, environmentally sealed connection between the panel and the structural member. An adhesive bonding agent may be inserted between an edge of the panel and the structural member to further increase the strength of the connection between the panel and structural member. The panel's edge may be provided with a C-shaped metal channel for more securely attaching the panel to the structural member by means of nails or screws driven through opposed ends of the tape strip and into the metal channel within the panel.
Abstract: A molding machine for molding microparts containing between 0.001 to 3.5 cubic centimeters of plastic shot volume includes a plasticizing portion operatively connected to an injection portion and a mold portion. A valve member is provided to open and close the connection between the plasticizing portion and the injection portion. A linear motor member is associated with the injection portion to permit molding times of 0.01 seconds at pressures up to about 100,000 psi during injection of the molten plastic into the mold portion.
Abstract: An elongated housing in the general shape of an inverted “U” having a lengthwise slot in a lower portion which includes six inner elongated conductor strips. Disposed within the housing and extending through the lower slot is a trolley with four sets of three conductive contact brushes each in linear alignment, with each set of three conductive contact brushes engaging one of four input power conductor strips. The trolley includes two additional brushes each in contact with a respective control conductor strip in the housing. The trolley is coupled to and controls the operation of a mobile machine such as used in automatic storage/retrieval systems. Springs urge the conductive contact brushes into intimate contact with a conductor strip, while support wheels on the trolley engage a lower, inner portion of the elongated housing for distributing the load and providing smooth passage over expansion joints or through transfer guides.
Abstract: A single housing containing an electric power meter compartment and a circuit breaker-power receptacle compartment is adapted for use at a temporary construction site employing underground utility cables in a utility secondary cable enclosure. The meter compartment and circuit breaker-power receptacle compartment are disposed in a side-by-side arrangement in the housing which is adapted for secure mounting to a pedestal connected to the underground utility cables. The power circuit breakers and receptacles are protected from the environment by means of an overhanging access door pivotally attached to the power receptacle(s) compartment. The attached plug-type power load cable connections in the housing are also environmentally protected by means of the access door overhang. Disposed in the circuit breaker-power receptacle compartment is a receptacle to provide electric power on a temporary basis such as to a contractor during the construction phase of a housing development.
Abstract: A machine is provided for forming a decorative twisted spiral garland from at least one continuous ribbon web, and a pair of continuous wires. One or more ribbon webs are guided to the outside of a pair of elongated threaded rods which are respectively disposed on opposite sides of and generally parallel to a main axis. The rods form part of a loop frame which is rotated about the main axis to wind the ribbon webs around the rods in a series of continuous loops and draw the webs from supply reels, while the rods are simultaneously rotated about their own axes to advance the ribbon loops along the main axis. A wire supply rotates in synchronism with the loop frame, guiding a pair of wires into paths respectively on opposite sides of the ribbon loops and thence along the main axis between pinch rollers for pulling the wires longitudinally along the axis. The rotation of the wire supply twists the wires and the ribbon loops to form the garland.
Abstract: A napkin holder comprising an upper wall, a lower wall and first and second sidewalls defining a housing having first and second opposed openings as provided. The holder also includes first and second plates disposed and moveable within the housing. The first and second plates respectively have first and second outer peripheries. The holder further includes a biasing structure disposed between the first and second plates biasing the first plate toward the first opening and the second plate toward the second opening. The biasing structure is disposed substantially within both the first and second outer peripheries. The holder also has first and second apertured doors respectively closing the first and second openings.
Abstract: A decorative twisted spiral garland includes one or more continuous webs of material, each arranged in a series of flattened, generally helical coils about a longitudinal axis, with the coils extending generally transversely of the axis and having a predetermined pitch longitudinally of the axis, and a pair of wires extending generally parallel to the axis outside of the coils and respectively along opposite sides of the coils, the wires being twisted together along the axis so that the coils are pinched together along the axis and twisted about the axis. The actual shape of the garland depends upon the amount of twist imparted to the wires and coils. One or more filaments may also be disposed along the axis inside the coils and twisted together with the wires and the coils.
Abstract: An umbrella-shaped shelter includes a single vertical support member either permanently mounted to a support surface, such as the ground, or removably attached to a mounting base disposed on or in the support surface. The lower end of the vertical support member may be mounted in a concrete base, removably inserted in a tubular sleeve disposed in the support surface, or may be attached to the support surface using anchor bolts, or ground anchors. In one embodiment, the lower end of the vertical support member is attached to a base including outwardly extending, radially disposed base members which, in turn, are mounted to the support surface such as by ground anchors. Concentrically disposed about and attached to an upper end of the vertical support member by radially extending frame members is a circular ring. A fabric cover is disposed over a cap on the upper end of the vertical support member and about the circular ring.
Abstract: A composite superconductor having an interior component of multiple filaments of superconducting Bi-2223 sheathed in a Ag or Ag alloy material, and a RE, TI or Hg based superconductor surrounding the interior component.
Type:
Grant
Filed:
July 8, 1999
Date of Patent:
June 26, 2001
Assignee:
The University of Chicago
Inventors:
Uthamalingam Balachandran, Milan Lelovic, Nicholas G. Eror