Patents by Inventor Gary W. Howell
Gary W. Howell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7525044Abstract: A section of wireway having an elongate channel-shaped body and cover for the body. The cover has a releasable hinge connection with the body for swinging between open and closed positions. In one embodiment, the hinge connection comprising at least two T-shaped slots in a side wall of the body at locations spaced along the length of the body and at least two T-shaped hinge members on the cover receivable in said slots for hinging the cover to the body.Type: GrantFiled: April 27, 2007Date of Patent: April 28, 2009Assignee: Cooper Technologies CompanyInventors: Gary W. Howell, Duan E. Packard, III
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Publication number: 20080263976Abstract: A section of wireway having an elongate channel-shaped body and cover for the body. The cover has a releasable hinge connection with the body for swinging between open and closed positions. In one embodiment, the hinge connection comprising at least two T-shaped slots in a side wall of the body at locations spaced along the length of the body and at least two T-shaped hinge members on the cover receivable in said slots for hinging the cover to the body.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Applicant: COOPER TECHNOLOGIES COMPANYInventors: Gary W. Howell, Duan E. Packard
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Patent number: 6408956Abstract: A power feed system for a rotary drill includes a hollow tubular derrick having a powerhead connected to a flexible cable moved by a double rod hydraulic cylinder assembly. The derrick includes fixed and movable sheaving assemblies. The hydraulic rod assembly, the fixed and movable assemblies operate substantially within the derrick interior. A guide wheel on the movable sheaving contacts the derrick to maintain axial alignment of the hydraulic rods. Pivotable connections between the cable and the movable sheaves automatically adjust for cable fleet angle change, as the movable sheaves travel, maintaining axial alignment of the hydraulic rods and avoiding introducing torque into the cylinder rods.Type: GrantFiled: August 29, 2000Date of Patent: June 25, 2002Assignee: Ingersoll-Rand CompanyInventors: James E. Morris, Steven M. Precopia, Gary W. Howell
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Patent number: 5551941Abstract: A centrifuge instrument and a rotor therefor which is loaded with sample containers automatically by gravity through an opening in a cover located over a core and, subsequent to centrifugation, is unloaded automatically, again assisted by gravity, through an opening in a floor disposed beneath the core. A sample container loading arrangement is provided to hold a plurality of sample containers and to individually present sample containers to the rotor.Type: GrantFiled: June 5, 1995Date of Patent: September 3, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 5139946Abstract: There is disclosed a perfusable cell culture device capable of expansion and maintenance of biological cells, including mammalian, microbial, plant and insect cells in culture. The device comprises an upper and lower polymeric film layer and a gas and liquid permeable flow divider membrane. The flow divider membrane is affixed between the upper and lower polymeric layers and to the lower polymeric layer in a manner providing channels for fluid distribution of culture medium which is perfused at a controlled rate, uniformly across the flow divider membrane and to a bed of cells dispersed on the flow divider membrane.Type: GrantFiled: July 9, 1991Date of Patent: August 18, 1992Assignee: Du Pont Merck Pharmaceutical CompanyInventors: Gary W. Howell, Joseph D. Irr, Ara T. Nahapetian
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Patent number: 5068195Abstract: There is disclosed a perfusable cell culture device capable of expansion and maintenance of biological cells, including mammalian, microbial, plant and insect cells in culture. The device comprises an upper and lower polymeric film layer and a gas and liquid permeable flow divider membrane. The flow divider membrane is affixed between the upper and lower polymeric layers and to the lower polymeric layer in a manner providing channels for fluid distribution of culture medium which is perfused at a controlled rate, uniformly across the flow divider membrane and to a bed of cells dispersed on the flow divider membrane.Type: GrantFiled: November 2, 1988Date of Patent: November 26, 1991Assignee: Du Pont Merck Pharmaceutical CompanyInventors: Gary W. Howell, Joseph D. Irr, Ara T. Nahapetian
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Patent number: 4863693Abstract: An analysis instrument is characterized by a rotatable mold ring onto which is drawn superimposed sheets of plastic material. The inner sheet is softened and formed into an indented mold cavity and the outer sheet sealed thereover to define a partially closed sample chamber, or cuvette. A sample to be analyzed is introduced into the chamber. Any of the chambers may have selectively introduced thereinto a suitable reagent and the reaction occurring in any chamber may be selectively monitored at any predetermined circumferential location of the mold ring.Type: GrantFiled: December 23, 1987Date of Patent: September 5, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 4820497Abstract: A liquid dispensing apparatus is characterized by a cleaning arrangement movable with the aspirating needle of the apparatus. The cleaning arrangement includes a pair of mating wellheads one of which has a flange with a planar surface thereon. The other of the wellheads has a corresponding cutout therein. When registered, the wellheads cooperate to define a well-like chamber with a closed bottom. The wellheads are each mounted on an arm which is movable from open to closed dispositions in response to movement of the aspirating needle.Type: GrantFiled: June 23, 1986Date of Patent: April 11, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 4714210Abstract: A dispensing apparatus for dispensing two strip materials, each carried on a separate spool, includes a hub having a slot therein which exposes a portion of one but not the other of the spools. A friction producing member is extensible through the slot and into friction generating engagement with the selected one of the spools to exert a drag force on one of the spools to the exclusion of the other. The friction producing member is received in a groove formed in a spindle so that torque imposed on the member by rotation of the spool is transmitted to the spindle.Type: GrantFiled: June 23, 1986Date of Patent: December 22, 1987Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 4428511Abstract: A fluid handling device of the rotary slot type is characterized by a fluid metering volume disposed in the stator of the device in close proximity to a fluid transfer passage formed in the stator. The metering volume receives a piston movable in a suction and a pumping stroke to draw fluid into the metering volume and to pump fluid therefrom. A rotary seal having the slot formed therein is received by seal rotating actuator such that a portion of a tab formed on the seal is accessible to permit removal of the seal from the rotating actuator.Type: GrantFiled: August 27, 1981Date of Patent: January 31, 1984Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 4380257Abstract: Samples of body fluids such as blood, urine, etc. are passed for analysis through separating columns to extract the desired component from the raw sample. Unwanted ingredients of the sample flow through the resin bed to a refuse cup. The retained desired component is later released from the resin bed by a solvent and collected in a recovery cup. Fluids passing through the resin bed are selectively passed to the refuse cup or recovery cup by flexing a disklike support for the resin bed. Preferably the support is flexed by applying a differential gas pressure across the support.An apparatus for implementing this method includes in a flexible disk, adapted to hold separating columns, suspended across an opening of a vacuum chamber. The outside edges of the disk form a seal for the chamber. The separating columns are in vertical alignment with waste receptacles disposed in a second disk positioned below the first disk.Type: GrantFiled: February 2, 1981Date of Patent: April 19, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 4002070Abstract: Disclosed herein is an apparatus for injecting a quantity of sample liquid into a continuously flowing carrier liquid comprising a housing, a primary channel, carrier inlet and outlet means both connected to the primary channel to form a carrier conduit through the housing, sample inlet and outlet channels both connected to the primary channel to form a sample conduit through the housing, a normally closed pressure relief valve disposed in the primary channel between the sample conduit and the carrier conduit, and means to change the pressure differential between the liquid flowing in the sample and carrier conduits.Type: GrantFiled: February 26, 1975Date of Patent: January 11, 1977Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary W. Howell
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Patent number: 3951167Abstract: Disclosed herein is a fluid handling assembly comprising a multi-valve assembly, a probe connected to a first valve structure in said multi-valve assembly, a plurality of secondary fluid sources connected to secondary valve in said multi-valve assembly and a pump connected to said multi-valve assembly. Each of the valves in the multi-valve assembly comprise valve seats, flexible diaphragms coacting with the valve seat to form leak-tight chambers containing orifices connecting the various channels in the valves, and a means to move the diaphragm to close off the connection between the orifices and thereby shut the valve.Type: GrantFiled: December 5, 1974Date of Patent: April 20, 1976Assignee: E. I. Du Pont de Nemours and CompanyInventors: Gary W. Howell, Danahey Ryan