Patents by Inventor John H. Roberts
John H. Roberts 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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Publication number: 20160243477Abstract: An allergen trap is provided. The allergen trap includes a woven or nonwoven substrate having at least one strata. The trap is impregnated with or otherwise treated with a tacky adhesive by which allergens may be trapped. An example of an allergen is a dust mite. The tacky adhesive, in turn, may be treated with a miticide or activated carbon.Type: ApplicationFiled: May 3, 2016Publication date: August 25, 2016Applicant: BUCKEYE TECHNOLOGIES INC.Inventors: Stephen A. Skirius, John H. Roberts, Brian Boehmer, Laurence A. Moose, JR., Namitha R. Conroy
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Patent number: 7727915Abstract: An allergen trap is provided. The allergen trap includes a woven or nonwoven substrate having at least one strata. The trap is impregnated with or otherwise treated with a tacky adhesive by which allergens may be trapped. An example of an allergen is a dust mite. The tacky adhesive, in turn, may be treated with a miticide or activated carbon.Type: GrantFiled: January 18, 2007Date of Patent: June 1, 2010Assignee: Buckeye Technologies Inc.Inventors: Stephen A. Skirius, John H. Roberts, Brian Boehmer, Laurence A. Moose, Jr., Namitha R. Sundara
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Publication number: 20100095846Abstract: An allergen trap is provided. The allergen trap includes a woven or nonwoven substrate having at least one strata. The trap is impregnated with or otherwise treated with a tacky adhesive by which allergens may be trapped. An example of an allergen is a dust mite. The tacky adhesive, in turn, may be treated with a miticide or activated carbon.Type: ApplicationFiled: December 21, 2009Publication date: April 22, 2010Inventors: Stephen A. Skirius, John H. Roberts, Brian Boehmer, Laurence A. Moose, JR., Namitha R. Sundara
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Patent number: 7642207Abstract: The present invention is directed to a unitary absorbent core including a first fibrous absorbent layer of (a) natural fibers, synthetic fibers or a mixture thereof, (b) a binder which is a synthetic binder fiber or powder, a hydrophilic emulsion polymer binder or a mixture thereof, the fibrous absorbent layer having an upper surface and a lower surface, the lower surface in contact, optionally coextensively in contact, with an upper surface of a synthetic carrier which has a lower surface integral with a first hydrophobic vapor-transmissive moisture barrier. The present invention is also directed to a receptacle for food incorporating the unitary absorbent core. The present invention is also directed to a filter element incorporating the unitary absorbent core.Type: GrantFiled: November 8, 2002Date of Patent: January 5, 2010Assignee: Buckeye Technologies Inc.Inventors: Brian E. Boehmer, Jeffrey Scott Hurley, Kathy L. Chamness, Joshua D. Crews, John H. Roberts
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Publication number: 20090019825Abstract: The present invention provides a specific filtration media which includes a substrate having cellulose fibers, bicomponent fibers, adhesion fibers, binder, and pressure sensitive adhesive. Also contemplated are fire retardant filtration media containing bicomponent fibers and polyester fibers or acrylic fibers, and optionally cellulose fibers. The cellulose fibers of the invention are pretreated with flame retardant, providing a beneficial material for filtration purposes.Type: ApplicationFiled: July 16, 2008Publication date: January 22, 2009Inventors: Stephen A. Skirius, John H. Roberts, Brian E. Boehmer, Laurence A. Moose, JR., Namitha R. Sundara
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Patent number: 6925880Abstract: Apparatus and method of measuring acoustic properties of a drumhead of a drum are disclosed. The acoustic properties are measured by exciting the drumhead with a source of energy and detecting the acoustic energy emitted by the drumhead. The acoustic energy emitted by the drumhead may be measured using a microphone or other acoustic sensor. The use of multiple energy sources provides isolation of acoustic energy and allows measurement of local resonance of the drumhead.Type: GrantFiled: November 17, 2003Date of Patent: August 9, 2005Inventor: John H. Roberts
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Patent number: 6515859Abstract: A heat sink alignment apparatus having an internal chamber with a plurality of heat sinks placed at an angled relationship to one another creating a tunnel through which air streams flows. At least one heat source is attached to a heat sink. A plurality of air streams enter the heat sink alignment apparatus through an ambient air intake and over a fan into the tunnel. The tunnel gradually narrows thereby increasing the velocity of the air streams which increases the cooling of the heat source. The narrowing shape of the tunnel creates turbulence within the plurality of air streams increasing the transfer of heat to various airstreams from the heat sink thereby lowering the temperature of the heat sources also.Type: GrantFiled: June 11, 2001Date of Patent: February 4, 2003Assignee: Peavey Electronics CorporationInventors: John H. Roberts, Ronald David Goss, Jack C. Sondermeyer
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Publication number: 20020144924Abstract: A package of a continuous strip of material formed from a web comprises a plurality of parallel side by side strip elements separated by dividing lines. The dividing lines are formed such that the width of the strip elements varies along their length with the wider portions of one alongside the narrower portions of the next in a nesting action. The strips are packaged for storage and transport to an end use machine where the strip elements are withdrawn and cut into identical strip portions at spaced positions along the strip so that each strip portion includes a portion of minimum width and a portion of maximum width. The web including all the strip elements is formed into a block in which the web is fan folded back and forth such that each folded portion of the web is folded relative to the next portion about a line transverse to the strip. Each strip element is continuous through the block and is connected by a splice to the beginning of the next strip element.Type: ApplicationFiled: March 22, 2002Publication date: October 10, 2002Applicant: BKI HOLDING CORPORATIONInventors: Robert A. Johnson, Juan Carlos Zuhlsdorf, Carlo Gretter, John H. Roberts
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Publication number: 20020006028Abstract: A heat sink alignment apparatus having an internal chamber with a plurality of heat sinks placed at an angled relationship to one another creating a tunnel through which air streams flows. At least one heat source is attached to a heat sink. A plurality of air streams enter the heat sink alignment apparatus through an ambient air intake and over a fan into the tunnel. The tunnel gradually narrows thereby increasing the velocity of the air streams which increases the cooling of the heat source. The narrowing shape of the tunnel creates turbulence within the plurality of air streams lowers the temperatures of the various air streams thereby lowering the temperature of the heat sources also.Type: ApplicationFiled: June 11, 2001Publication date: January 17, 2002Inventors: John H. Roberts, Ronald David Goss, Jack C. Sondermeyer
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Patent number: 6244058Abstract: A tube and shell evaporator operable at near freezing includes a temperature sensor that senses the temperature of chilled water discharging from one or just a few of the very coldest tubes, whereby the sensed temperature is less than the average leaving chiller water temperature (LCWT). The result provides an exceptionally low LCWT, which can be especially desirable in district cooling systems where the chilled water is usually piped a great distance.Type: GrantFiled: January 21, 2000Date of Patent: June 12, 2001Assignee: American Standard International Inc.Inventors: Joel S. Duga, Steven J. Pitts, John H. Roberts
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Patent number: 5737428Abstract: A compound differential circuit detects the highest relative signal of a plurality of input signals. Peak detector circuits including a sensing diode and a capacitor, are employed to produce a control signal. A switch receives the corresponding control signal. One switch is active at a time in response to the highest control signal. An LED connected to the activated switch is illuminated so that a visual indication of the highest input signal is displayed. In another embodiment, a feedback sensor for a graphic equalizer is disclosed.Type: GrantFiled: August 18, 1995Date of Patent: April 7, 1998Assignee: Peavey Electronics CorporationInventor: John H. Roberts
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Patent number: 5652800Abstract: A proportional, multichannel gain sharing audio circuit has a gain control in the computing leg so that additional weight may be accorded the channel so that the channel is allocated greater gain in proportion to the total amount of signal available to all of the channels combined. Weighting may be adjustable and more than one channel may have such a feature, so that a hierarchy of priority is possible.Type: GrantFiled: November 2, 1995Date of Patent: July 29, 1997Assignee: Peavey Electronics CorporationInventor: John H. Roberts
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Patent number: 5509080Abstract: A clipping circuit is coupled across the bass feedback shunt capacitor in an amplifier circuit to effectively reduce only high level bass signals while allowing level high frequencies to pass and allowing full boost to low level, low frequency signals.Type: GrantFiled: March 14, 1994Date of Patent: April 16, 1996Assignee: Peavey Electronics CorporationInventor: John H. Roberts
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Patent number: 5293775Abstract: Inlet vortex ingestion is deterred when testing an engine (12) in a test cell (10). Ramp structures (26) are installed on the walls blocking 30% to 50% of the flow area. The apex (42) of these ramps is located adjacent the engine inlet (24) with the upstream faces (46) at about a 45.degree. angle.Type: GrantFiled: November 2, 1992Date of Patent: March 15, 1994Assignee: United Technologies CorporationInventors: Terry A. Clark, Mark W. Peszko, John H. Roberts, George L. Muller, John P. Nikkanen
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Patent number: 5119426Abstract: A linear display device provides a floating bar type of display for instantaneous peak values and instantaneous average values of an audio signal. Pairs of respective peak and average comparators are coupled to a source of fixed value bias voltages. The comparators produce outputs when the peak value and the average value of the audio signal exceeds the bias voltage. A logic circuit connected to outputs of each pair of comparators provides an output only when the bias voltage exceeds the instantaneous peak value.Type: GrantFiled: June 7, 1990Date of Patent: June 2, 1992Assignee: Peavey Electronics CorporationInventor: John H. Roberts
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Patent number: 4953222Abstract: A gated multi-channel amplifier system comprises a plurality of musical performance amplification channel means each responsive only to high threshold level sound input for producing amplified sound output, and another channel comprising a vocal/announcer amplifier channel means capable of responding to announcer sound input of both low threshold level and high threshold level for producing an amplified announcer sound output, and means for gating the vocal/announcer amplification channel means to respond to announcer sound input of low threshold signal level only in the absence of response by the other musical performance amplification channel means.Type: GrantFiled: June 1, 1988Date of Patent: August 28, 1990Assignee: Peavey Electronics CorporationInventor: John H. Roberts
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Patent number: 4818951Abstract: This invention concerns, in a current-controlled amplifier circuit, the combination of output amplifier means having an input conductor and having an output conductor for converting a signal at the input conductor of the output amplifier means to a current amplified signal, feedback means connected between the output and input conductors of the output amplifier means and including a differential pair of semiconductors having a control current output, for presenting a signal at the input conductor of the output amplifier means which is the product of an input signal to the amplifier circuit and the ratio of a reference current to the control current and for substantially eliminating dc input at the input conductor of the output amplifier means and setting the quiescent currents of the semiconductors of the differential pair substantially equal.Type: GrantFiled: April 11, 1988Date of Patent: April 4, 1989Assignee: Peavey Electronics CorporationInventor: John H. Roberts
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Patent number: 4622048Abstract: Apparatus for separating a liquid from a gas includes a cylindrical separator element disposed in a sealed housing. The separator element includes a helical ramp wrapped around a cylindrical column both of which are disposed in a hollow cylindrical shell. The ramp, column and shell cooperate to define a helical passage through which a liquid-gas mixture is constrained to pass between an inlet and outlet at opposing ends of the separator element. A liquid-gas mixture entering the separator element is imparted a swirling motion as it passes through the helical passage within the separator element. Liquid entrained in the mixture migrates radially outward within the separator element and passes through the permeable shell. The separated liquid drains by force of gravity to a sump area defined by the sealed housing from where it can be drained for re-use.Type: GrantFiled: January 17, 1985Date of Patent: November 11, 1986Assignee: American Standard Inc.Inventors: John H. Roberts, James C. Tischer
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Patent number: 4534216Abstract: The accuracy of performance data obtained from instrumentation associated with a wind tunnel test facility is determined by a comparison of empirically and analytically determined performance data associated with a combustorless gas turbine engine reference model. The reference model includes a housing (30) terminating in an exhaust nozzle (85) of standard geometry for which empirical performance data exists. A plurality of apertured plates (130-145) spaced from each other and other reference model components by spacer rings (165-185) adjust airflow through the reference model to correspond to that encountered in the actual wind tunnel testing of a combustorless gas turbine engine simulator.Type: GrantFiled: May 31, 1983Date of Patent: August 13, 1985Assignee: United Technologies CorporationInventors: Anthony Fasano, John H. Roberts, David L. Motycka
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Patent number: D310204Type: GrantFiled: October 14, 1987Date of Patent: August 28, 1990Assignee: Mac Auto Equipment Inc.Inventor: John H. Roberts, Jr.