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Carnegie Mellon University Patents
Assignee:
Carnegie Mellon University
Address:
Pittsburgh, PA
No. of patents:
414
Patents:


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Patent Number Title Of Patent Date Issued
5451135 Collapsible mobile vehicle September 19, 1995
A mobile vehicle having a substantially hexagonally-shaped frame member that is movable between a collapsed position to enable the vehicle to enter a vessel opening or an area having constrained access points and a more stable expanded position. Drive apparatuses are attached to the fram
5440546 Packet switch August 8, 1995
The present invention pertains to a packet switch. The packet switch is comprised of a global shared-memory queue having M storage addresses in which respective packets are stored, where M.gtoreq.3 and is an integer. The packet switch is also comprised of a presentation network having N
5435405 Reconfigurable mobile vehicle with magnetic tracks July 25, 1995
A mobile vehicle having at least one endless driven member for driving the endless member on a surface capable of supporting a magnetic circuit. The vehicle is equipped with a magnetic system that is housed in a substantially hermetically sealed enclosure and comprises a magnet, a fi
5432072 Purification method for materials having nick-translation ability July 11, 1995
The present invention pertains to a method of purification of DNA polymerase I, and the polymerase and Nick-translation activities thereof. In one embodiment, the method of purification is directed to circumstances where there are amplified amounts of the same relative to that which is
5429009 Robot with cruciform geometry July 4, 1995
A movable robot for performing tasks upon and traversing a work surface. The robot having a first support means having a longitudinal axis. The first support means have first gripping means extending therefrom for detachable adhering the first support means to the work surface. The robot
5414311 Sample and hold circuit and finite impulse response filter constructed therefrom May 9, 1995
A high speed sample and hold circuit comprises an amplifier for producing an output current which is a linear function of an input voltage. A capacitor is responsive to the output current for producing an output voltage representative of the integral of the output current over a pred
5402785 Methods for measuring perfusion using magnetic resonance imaging April 4, 1995
Methods for measuring the perfusion of fluid in a substance are shown to include subjecting the fluid to electromagnetic energy so as to cause a response related to the magnetization of the fluid before it enters the substance, performing magnetic resonance measurements on the substance
5396714 Apparatus for assembly of axisymmetric and non-axisymmetric rigid parts March 14, 1995
An azimuth angle compensation device adapted for use with an assembler device for inserting an object into a workpiece, whereby the assembler device establishes a centerline corresponding substantially to an insertion axis of the object to be inserted into the workpiece. The azimuth
5394268 Field synthesis and optical subsectioning for standing wave microscopy February 28, 1995
In an improved optical microscope for observing a luminescent specimen, the specimen is excited by a time-multiplexed series of standing wave fields. Then an image of the specimen is recorded and displayed. This specimen can be incrementally moved and additional images can be created and
5382644 Linear polyphosphazenes and a process for their production January 17, 1995
Polyphosphazenes are produced by polymerizing a silylated phosphinimine in the presence of an initiator, preferably an anionic initiator at temperatures below those typically necessary for such polymerization reactions. The polyphosphazenes obtained are suitable for use in the produc
5363935 Reconfigurable mobile vehicle with magnetic tracks November 15, 1994
A reconfigurable mobile vehicle having at least one endless driven member and a motor for driving the endless member on a surface capable of supporting a magnetic circuit. The vehicle is equipped with a magnetic system that comprises a magnet, a fixed magnetic circuit member, and a m
5344706 Magnetic recording medium comprising an underlayer and a cobalt samarium amorphous magnetic laye September 6, 1994
The present invention pertains to a thin film media structure for low noise high density longitudinal magnetic recording. The thin film media structure is comprised of a substrate. The thin film media structure is also comprised of an underlayer in contact with the substrate. Additio
5325518 Adaptive distributed system and method for fault tolerance June 28, 1994
An adaptive distributed system and method for fault tolerance. The system is comprised of a network including N nodes, where N is an integer greater than or equal to 3 and each node is able to execute an algorithm in communication with the network. Each of the N nodes is in communication
5324992 Self-timing integrated circuits having low clock signal during inactive periods June 28, 1994
An integrated circuit function unit operating in a data dependent manner in logic operations of variable lengths of time is provided with a clock signal having a pulse width determined by the active period of the function unit. In one embodiment a current sensor monitors power supply
5313398 Method and apparatus for simulating a microelectronic circuit May 17, 1994
A method and apparatus for simulating a microelectronic circuit includes the steps of storing of a microelectronic circuit or system representation in a computer system and then dividing the circuit or system into portions containing nonlinear elements and linear partitions. The linear p
5312871 Free radical polymerization process May 17, 1994
This invention concerns a "living" free radical polymerization process for preparing polymers having a narrow distribution of molecular weights.
5312456 Micromechanical barb and method for making the same May 17, 1994
A system for linking a first member with a second member. The system is comprised of a first plurality of micromechanical barbs disposed on the first member. The system is also comprised of a second plurality of micromechanical barbs disposed on the second member. The barbs on the fi
5287346 Packet switch February 15, 1994
The present invention pertains to a packet switch. The packet switch is comprised of a global shared-memory queue having M storage addresses in which respective packets are stored, where M.gtoreq.3 and is an integer. The packet switch is also comprised of a presentation network having N
5234829 Purification method for materials having nick translation ability August 10, 1993
The present invention pertains to a method of purification of DNA polymerase I, and the polymerase and Nick-translation activities thereof. In one embodiment, the method of purification is directed to circumstances where there are amplified amounts of the same relative to that which is
5189781 Rapid tool manufacturing March 2, 1993
A method for rapid tool manufacturing comprising the steps of first building an SFF pattern made of plastic to be used to make a first die half. Then there is the step of spraying metal onto the pattern to form a first metal substrate. Next, there is the step of separating the substrate
5186515 Low friction gripper February 16, 1993
An apparatus for gripping objects comprising a first jaw having a first support member and a first support plate that is slidingly attached to the support member with respect to a first direction or motion. The apparatus is also comprised of a second jaw that has a second support member
5146179 Fully differential operational amplifier having frequency dependent impedance division September 8, 1992
A fully differential operational amplifier includes first and second frequency dependent impedance dividers, preferably frequency dependent current dividers, each of which has an input, a noninverting output and an inverting output. A respective input is coupled to a differential input
5138008 Process for the production of linear polyphosphazenes August 11, 1992
Polyphosphazenes are produced by polymerizing a silylated phosphinimine in the presence of an initiator, preferably an anionic initiator at temperatures below those typically necessary for such polymerization reactions. The polyphosphazenes obtained are suitable for use in the produc
5136593 Apparatus and method for fixed delay tree search August 4, 1992
A method for identifying a signal subject to intersymbol interference comprising the steps of receiving .tau.+1 samples of the signal where .tau. is greater than or equal to one; searching a tree representation of known values to determine the path of the branch of the tree which most
5134260 Method and apparatus for inductively heating powders or powder compacts for consolidation July 28, 1992
An apparatus for heating powders or powder compacts for consolidation in a pressure vessel having a chamber. There is a device for directly induction heating the powder or powder compact. Additionally, the apparatus is comprised of a device for compacting a powder or powder compact. The
5127484 Orthogonal legged walking robot July 7, 1992
The present invention pertains to a robot for moving along uneven terrain. The robot comprises a body having an opening through which a leg can pass. There is also a device for moving the body. The moving device includes at least 3 legs, at least one of which can exhibit an overlapping g
5126270 Enzyme amplification and purification June 30, 1992
Restriction enzymes are used to remove from DNA a complete and undamaged structural gene coding region for the expression of DNA polymerase I (polA) without the gene's natural promoter or with only a significantly damaged portion of the gene's natural promoter. Also by the use of res
5107103 Integrated circuit having at least a sensor and a processor thereon April 21, 1992
The present invention pertains to an integrated circuit. The integrated circuit comprises a sensor which produces a sensor signal corresponding to energy received. The integrated circuit is also comprised of a processing element connected to the sensor which receives the sensor signal on
5098145 Low friction gripper March 24, 1992
An apparatus for gripping objects comprising a first jaw having a first support member and a first support plate that is slidingly attached to the support member with respect to a first direction or motion. The apparatus is also comprised of a second jaw that has a second support member
5091780 A trainable security system emthod for the same February 25, 1992
A security system comprised of a device for monitoring an area under surveillance. The monitoring device produces images of the area. The security system is also comprised of a device for processing the images to determine whether the area is in a desired state or an undesired state.
5079974 Sprayed metal dies January 14, 1992
A method for forming a sprayed metal die comprising the steps of first building a positive pattern of the die. Then, there is the step of spraying a first metal, having a first melting temperature, onto the pattern to form a first metal substrate. Next, there is the step of separatin
5051951 Static RAM memory cell using N-channel MOS transistors September 24, 1991
A floating gate NMOS enhancement mode transistor is utilized in an NMOS SRAM thereby reducing power consumption, size, and circuit complexity of the memory cell. The gate of the load transistor is allowed to float with no galvanic connection to the memory cell circuit. A bias voltage is
5025344 Built-in current testing of integrated circuits June 18, 1991
A built in current sensor on a unitary substrate with an integrated circuit is provided to sense abnormal quiescent current flow through the integrated circuit after a timing phase as an indication of defects such as shorts and open circuits, while ignoring normal high current peaks. A
5019112 Robotic food service packaging system May 28, 1991
A handling and packaging system for utensils comprised of a device for packaging the utensils; and a device for obtaining the utensils and moving them to the packaging device. Preferably, the obtaining device includes N specialized end-effectors which seize the utensils, where N.gtoreq.1
5005658 Orthogonal legged walking robot April 9, 1991
The present invention pertains to a robot for moving along uneven terrain. The robot comprises a body having an exterior surface and a device for defining the terrain around the body. There is also a device for moving the body. The moving device includes legs, at least one of which are
4981977 Intermediate for and fluorescent cyanine dyes containing carboxylic acid groups January 1, 1991
(2,3,3-Trimethyl-3-H-indol-5-yl)-acetic acid has been synthesized. Additionally, derivatives of (2,3,3-Trimethyl-3-H-indol-5-yl)-acetic acid have been prepared as intermediates for preparation of fluorescent cyanine biolabels. A derived dye, 5.5'-Dicarboxymethyl-3,3,3',3'-tetramethyl
4935935 Wavelength tunable electronic and electrooptical semiconductor devices June 19, 1990
This invention relates to an electrically tunable semiconductor device. At least one thin film of piezoelectric substance is positioned in stress transmitting relation to the semiconductor-device and a signal from an electrical circuit causes the piezoelectric to transmit stress to the
4932254 Detector for dry deposition of atmospheric contaminants having a coating capable of retaining co June 12, 1990
A detector for dry deposition of atmospheric contaminants comprised of a surrogate surface upon which the contaminants are deposited from the atmosphere; an airfoil-type surface circumferentially surrounding the surrogate surface and providing a laminar or transition boundary layer f
4893183 Robotic vision system January 9, 1990
The present invention pertains to a robotic vision system for identifying the location of objects. The robotic vision system includes a device for recording images, and n elements, where n.gtoreq.2 and is an integer. Each of the n elements is disposed at a predetermined position such tha
4851262 Method of making carbide, nitride and boride powders July 25, 1989
A method of making metal carbide, nitride, or boride powders and mixtures thereof by direct reduction of metal compounds comprises (a) forming a reactant mixture, (b) heating the reactant mixture to temperatures that cause solid reactants to vaporize and above which the metal precursor
4825318 Compound read/write element for rigid magnetic disk files April 25, 1989
An inductive vertical or horizontal read/write head element for use in rigid magnetic disk files. The element is comprised of at least three spaced apart poles, each of said poles having a flux path extending from said head means, magnetically connecting said path, and at least two e
4812826 Thermal sensor for detection of railroad bearing failures March 14, 1989
A thermal sensor composed of a standard bolt which has been modified to embody a temperature sensing element and placed into a bearing assembly of a train. This element contains a heat-sensitive wax that at a preset temperature expands causing the motion of a piston which exposes pro
4807183 Programmable interconnection chip for computer system functional modules February 21, 1989
The interconnection chip of the present invention is a custom chip which is designed to serve as an efficient link between system functional modules, such as arithmetic units, register files and input/output ports. The chip includes a crossbar interconnection, a FIFO or programmable dela
4800457 Magnetoresistive sensor element January 24, 1989
A magnetoresistive sensor which includes an element having a first layer that exhibits a magnetoresistive response, a second layer that magnetically biases the first layer and is in contact therewith, and possibly a substrate that contacts the first layer, with the first layer dispos
4774836 Detector for dry deposition of atmospheric contaminants October 4, 1988
A detector for dry deposition of atmospheric contaminants comprised of a surrogate surface upon which the contaminants are deposited from the atmosphere; an airfoil-type surface circumferentially surrounding the surrogate surface and providing a laminar or transition boundary layer f
4767708 Enzyme amplification and purification August 30, 1988
Restriction enzymes are used to remove from DNA a complete and undamaged structural gene coding region for the expression of DNA polymerase I (polA) without the gene's natural promoter or with only a significantly damaged portion of the gene's natural promoter. Also by the use of res
4667877 Multi-orifice impulsed spray generator May 26, 1987
A spray generator comprises a reservoir with a piezoelectric crystal affixed to its bottom surface and vertical tubes opening out of its top surface, each tube having an orifice at its tip. Spray liquid collecting around the orifices drains off without obstructing them. In another em
4621911 Standing wave luminescence microscopy November 11, 1986
An optical microscope and a method are described wherein a luminescent specimen is located in, and illuminated by, a nodal standing wave field. Luminescence (fluorescence or phosphorescence) is excited in a series of parallel equispaced laminar antinodal zones separated by a series of da
4579380 Servo robot gripper April 1, 1986
A light weight servo controlled robot gripper is disclosed. A plastic body houses one or more threaded drive shafts which are powered by a direct current motor. Attached to the shafts are finger mounting blocks which support removable fingers and which can be driven both closer to and
4563954 Four-wheeled adjustable vehicle January 14, 1986
A motor driven vehicle for traversing the interior of a pipe or conduit accommodates itself to variations in the interior contour of the pipe and automatically positions itself on the longest axis of any cross section of the pipe. It comprises a pair of two-wheeled trucks each pivotally
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