Patents Represented by Attorney, Agent or Law Firm John R. Wahl
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Patent number: 5805787Abstract: Large numbers of relatively small (e.g., 1.8" or smaller) off-the-shelf disk drives are controlled to maximize the highest throughput performance at the least cost between a host computer and a mass storage subsystem. Host data is stored redundantly so as to form a cache. The controller recognizes data contained in its associated disk cache so as to produce that data to a requesting host with minimum delay. Data not in the disk cache as well as write commands are transferred to the controller of a mass storage subsystem with no substantial delay.Type: GrantFiled: December 29, 1995Date of Patent: September 8, 1998Assignee: EMC CorporationInventors: William A. Brant, Michael Edward Nielson
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Patent number: 5791755Abstract: A gobo handling apparatus for use in a spotlight is disclosed. The spotlight has a housing supporting a light source producing a light beam and supporting at least one focusing lens. The spotlight includes an iris slot through the housing proximate the focal plane of the light beam. The apparatus of the invention comprises an elongated gobo housing removably inserted in the slot. The gobo housing has a central axis and an aperture therethrough for passage of the light beam in a direction normal to the gobo housing axis. The housing has a plurality of generally disk shaped gobo carriers each supporting a gobo, arranged side by side and movably contained within the housing. A drive mechanism contained within the housing operatively engages each of said plurality of gobo carriers for independently translating the gobo members along the housing axis into and out of the spotlight beam and rotating the gobo carrier in the spotlight beam in response to a remote control signal.Type: GrantFiled: November 14, 1996Date of Patent: August 11, 1998Assignee: Wybron IncorporatedInventors: Patrick L. Henry, Kenneth R. Fasen
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Patent number: 5746850Abstract: A double inner tube and valve system for use in a wheel assembly including a circular rim with a base wall and opposing radially extending flanges defining a well, and an aperture formed in said base wall. A tire is mounted on the rim, and defines an annular cavity in conjunction with the rim. The double inner tube is positioned in the annular cavity and defines an inflatable primary tube adjacent to the tire, and an inflatable secondary tube positioned between the primary tube and the rim. A valve assembly is attached to the double inner tube and positioned in the aperture in the rim. The valve assembly comprises a primary valve in fluid communication with the primary tube to allow inflation of the primary tube and a secondary valve which replaces the primary valve and is in fluid communication with the secondary tube for inflation of the secondary tube. The valve assembly is selectively configurable to inflate the primary tube or the secondary tube.Type: GrantFiled: April 26, 1996Date of Patent: May 5, 1998Inventors: Marcus P. Luscher, Stephen F. Ridley
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Patent number: 5710381Abstract: A two-piece plastic holder for loosely holding microliter sample tubes of a preselected design, each tube having a cylindrically shaped upper section open at its top end, a closed, tapered lower section extending downwardly therefrom, and a circumferential shoulder extending outwardly from the upper section at a position on the upper section spaced from the open end thereof. The holder includes a one-piece tray member and a one-piece retainer. The one-piece tray member including a flat, horizontal plate section containing holes in a rectangular array, a first vertical tray sidewall section around the plate extending upwardly to a height greater than the height of a tube resting in one of the holes, and a second vertical tray sidewall section around the plate extending downwardly approximately to the bottom of the upper section of a tube resting in one of the holes. The one-piece retainer is releasably engageable inside the tray over any sample tubes resting in the tray.Type: GrantFiled: March 1, 1994Date of Patent: January 20, 1998Assignee: The Perkin-Elmer CorporationInventors: John Girdner Atwood, Albert Carmelo Mossa, Lisa May Goven, Fenton Williams, Timothy M. Woudenberg, Marcel Margulies, Robert P. Ragusa, Richard Leath, Clive Miles
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Patent number: 5608919Abstract: A web type mounting pad for a mini-flashlight is removably secured to a helmet with elastic straps having hooks that clip to the helmet rim. In one embodiment three straps (two long one short) secure the mounting pad. In another embodiment a slidable mounting pad slides on one or more elastic straps. In another embodiment a snap on Velcro band holds a removable Velcro mounting pad, and a tether secures the hand held flashlight to the helmet.Type: GrantFiled: October 5, 1994Date of Patent: March 11, 1997Inventor: Richard N. Case
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Patent number: 5593559Abstract: A Capillary Electrophoresis apparatus and method are disclosed which utilize a meltable plug in an end of the capillary tube to selectively pass small ionic contaminants electrophoretically and retain macromolecular analytes against one end of the plug until the plug is melted. When this plug is melted, the analytes and the contaminants pass through unimpeded. This permits separation of the analytes from the contaminants during electrophoretic separation and enhances instrument resolution.Type: GrantFiled: January 13, 1995Date of Patent: January 14, 1997Assignee: The Perkin-Elmer CorporationInventor: John Wiktorowicz
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Patent number: 5567252Abstract: A nontoxic primer mix for use in a percussive primer, especially of the Boxer type which principally comprises diazodinitrophenol, iron oxide and boron. The composition may also contain a nitrate ester as a fuel, and tetrazene as a secondary explosive.Type: GrantFiled: January 9, 1992Date of Patent: October 22, 1996Assignee: Olin CorporationInventors: George C. Mei, James W. Pickett
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Patent number: 5489818Abstract: A method of generating high-power microwaves from a compact source is disclosed by which a transmission line cavity resonator is charged to a high voltage and an electrical switch in the resonator is closed very quickly to produce subnanosecond current risetime and a resultant high-power microwave pulse. Structure to accomplish the method is also disclosed.Type: GrantFiled: May 22, 1989Date of Patent: February 6, 1996Assignee: Olin CorporationInventors: John T. Naff, Siu-Kwong Lam
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Patent number: 5488523Abstract: An ultra-slim disk storage unit includes a frame and a cover for engaging the frame to create first and second enclosed spaces therein. In one of the enclosed spaces a disk drive assembly is housed which provides readable and writeable information storage on a disk medium. Electronics for controlling the operation of the disk drive assembly is housed on a board contained within the second enclosed space. A connector provides coupling to the disk drive assembly electronics for external electrical connection to the disk storage unit. The connector is disposed along a peripheral side of the frame in accordance with PCMCIA standards.Type: GrantFiled: June 9, 1993Date of Patent: January 30, 1996Assignee: Maxtor CorporationInventors: Jay R. Seaver, Mark A. Diel, Forrest Titcomb
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Patent number: 5484063Abstract: A carrying case for a portable hard disk drive. The carrying case is particularly adapted to hold a hard disk drive that complies with the PCMCIA specifications. The case includes a cover that is pivotally connected to a base, so that the cover can be rotated between open and closed positions. Within the base portion of the case is an elastic insert which contains a slot that can receive a drive unit. The elastic insert is constructed to significantly dampen any shock load that is applied to the case and prevent damage to the drive unit.Type: GrantFiled: April 13, 1994Date of Patent: January 16, 1996Assignee: Maxtor CorporationInventors: Allen Cuccio, John Hagerman
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Patent number: 5423966Abstract: A Capillary Electrophoresis apparatus and method are disclosed which utilize a meltable plug in an end of the capillary tube to selectively pass small ionic contaminants electrophoretically and retain macromolecular analytes against one end of the plug until the plug is melted. When this plug is melted, the analytes and the contaminants pass through unimpeded. This permits separation of the analytes from the contaminants during electrophoretic separation and enhances instrument resolution.Type: GrantFiled: February 15, 1994Date of Patent: June 13, 1995Assignee: Perkin-Elmer CorporationInventor: John Wiktorowicz
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Patent number: 5359938Abstract: An ultra light weight sabot for a subcaliber projectile comprises a sabot having three reduced mass segments each incorporating driving grooves at their inner diameter, an aft bourrelet, a central cavity beneath the aft bourrelet and an outwardly directed projection forward of the aft bourrelet to support the forward end of the projectile as it travels through a gun bore. The aft bourrelet has a balloon type obturator thereon which also fastens to the cartridge case. A bore extending through the obturator and the aft bourrelet into the annular cavity equalizes pressure between the case and the annular cavity to assist in sabot segment separation from the subcaliber projectile.Type: GrantFiled: October 24, 1990Date of Patent: November 1, 1994Assignee: Olin CorporationInventors: Ralph F. Campoli, Edwin G. Steiner
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Patent number: 5309110Abstract: An apparatus for analyzing the dielectric properties of a sample. A thin planar sample having a hole therein is positioned over two bottom electrodes having the hole over one of the bottom electrodes. An oscillator provides a first signal to one of the bottom electrodes and a second signal 180.degree. out of phase with the first signal to the second bottom electrode. A differential signal is obtained on the top electrode representative of the dielectric properties of the sample with the elimination of edge effects. A phase sensitive demodulator synchronized with the oscillator extracts the two components of the conductance and susceptance of the sample. A position sensor measures the thickness of the sample and is used to calculate the dielectric constant of the sample. Thereby, an accurate measurement of the dielectric properties of the sample is obtained without a complicated structure in order to eliminate edge effects.Type: GrantFiled: March 4, 1992Date of Patent: May 3, 1994Assignee: The Perkin Elmer CorporationInventors: Michael J. O'Neill, Kerry McKinley
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Patent number: 5282543Abstract: An array of reaction tube covers adapted to seal a plurality of reaction tubes comprises a unitary body of flexible material having a plurality of flexible plastic nodules. Each nodule is adapted to seal one of the reaction tubes. Each of the nodules is flexible held in a predetermined planar spaced relationship from each other in rows, preferably in rows and columns, by an integral web having a plurality of apertures therethrough. Each of the nodules has a downwardly convex, generally hemispherical lower portion extending from the web, an upwardly convex upper portion extending from the web over the lower portion, and a centrally domed nipple extending upwardly from the upper portion.Type: GrantFiled: January 11, 1993Date of Patent: February 1, 1994Assignee: The Perkin Elmer CorporationInventors: Enrico Picozza, Timothy M. Woudenberg, Robert Ragusa, Ralph Keese
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Patent number: 5269223Abstract: A self-powered fuze apparatus for a projectile containing an explosive charge which comprises a first housing containing a mechanical safety device for releasably preventing undesired movement of a detonator cup holder containing a detonator from an unarmed to an armed position wherein the detonator cup is shielded from the charge to be exploded in the unarmed position and the detonator cup communicates with the charge only in the armed position and the second housing adjacent the first housing containing an electronic safety means for sensing target impact and projectile launch and selectively passing a piezoelectrically generated firing current to the detonator cup only upon sensing a predetermined magnitude target impact only within a predetermined time after sensing the launch acceleration and only when the electronic means is electrically and mechanically connected to the detonator cup in the armed position.Type: GrantFiled: October 6, 1992Date of Patent: December 14, 1993Assignee: Ems-PatvagInventors: Kjell V. Mattsson, Robert Rehmann, Rudolf Zaugg
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Patent number: 5265459Abstract: A Wheatstone bridge type thermal conductivity sample gas detector. A sensing element comprising one arm of the bridge is disposed in a constant temperature oven. A variable resistor, which functions as a reference element, and two fixed resistances comprise the second, third, and fourth arms of the bridge. Carrier gas is circulated around the sensing element and the bridge is balanced by use of the variable resistor. Thereafter, any unbalance of the bridge is caused by sample gas intermingling with the carrier gas, thereby providing a signal representation of the sample.Type: GrantFiled: August 22, 1991Date of Patent: November 30, 1993Assignee: The Perkin Elmer CorporationInventor: Sidney R. Cohen
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Patent number: D374769Type: GrantFiled: December 30, 1994Date of Patent: October 22, 1996Assignee: RCP Enterprises, Inc.Inventor: Richard N. Case
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Patent number: D374770Type: GrantFiled: December 30, 1994Date of Patent: October 22, 1996Assignee: RCP Enterprises, Inc.Inventor: Richard N. Case
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Patent number: D379914Type: GrantFiled: March 20, 1996Date of Patent: June 17, 1997Assignee: Outdoor Edge Cutlery CorporationInventor: David R. Bloch
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Patent number: D381805Type: GrantFiled: November 28, 1995Date of Patent: August 5, 1997Inventor: Richard N. Case