Patents by Inventor Donald Frederick
Donald Frederick 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: 20030057196Abstract: A welding torch (2) for use in gas metal arc welding, comprising a neck portion (4), a diffuser (6) at a first end (8) of the neck portion (4), a contact tip (10) which extends from the diffuser (6), and connector means (12) which is at a second end (14) of the neck portion (4) and which is for connecting the neck portion (4) to a power cable assembly; the neck portion (4) comprising an electrical conductor (16) and a longitudinally extending passageway (18); electrical current transfer from the electrical conductor (16) to the contact tip (10) being effected using first and second longitudinally separated contact areas (22, 24) on the contact tip (10); and the welding torch (2) including a gas chamber (30) which is positioned longitudinally between the two contact areas (22, 24) and radially between the contact tip (10) and the diffuser (6).Type: ApplicationFiled: August 23, 2002Publication date: March 27, 2003Inventor: Donald Frederick Jones
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Patent number: 6521461Abstract: A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula wherein A=F or Rf; X=H, F, Cl, Rf, or YRf; Z= H, F, Cl, or Rf; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each Rf is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two Rf groups can be linked to form a cyclic structure. The Rf alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred.Type: GrantFiled: June 14, 2001Date of Patent: February 18, 2003Assignee: 3M Innovative Properties CompanyInventors: Mark Eugene Mueller, Donald Frederick Hagen, Yuri Cheburkov, Fred Lynn DeRoos, Glenn Delmont Johnson, John Stephen Marhevka, Venkateswarlu Pothapragada
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Patent number: 6507679Abstract: An optical sensor architecture receives an input optical signal from a signal source and outputs a perturbed optical signal from at least one sensor to a receiver. An optical amplifier is positioned along a return fiber at an optical distance at least 10 kilometers from the receiver, with the optical amplifier amplifying the perturbed optical signal propagating to the receiver. If only one optical amplifier is used, the optical distance between the amplifier and the receiver may be between about 10 km and about 80 km, and an optical distance of between about 10 km and about 150 km may separate the sensor and the receiver. If additional optical amplifiers and dedicated pump distribution fibers are used, the optical distances may be correspondingly greater. Alternatively, increasing the number of sensors necessitates a reduction in the optical distance separating the sensors from shore.Type: GrantFiled: May 13, 1999Date of Patent: January 14, 2003Assignee: Litton Systems, Inc.Inventors: Craig W. Hodgson, Donald A. Frederick
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Patent number: 6437202Abstract: A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula wherein A=F or Rf; X=H, F, Cl, Rf, or YRf; Z=H, F, Cl, or Rf; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each Rf is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two Rf groups can be linked to form a cyclic structure. The Rf alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred.Type: GrantFiled: June 13, 2001Date of Patent: August 20, 2002Assignee: 3M Innovative Properties CompanyInventors: Mark Eugene Mueller, Donald Frederick Hagen, Yuri Cheburkov, Fred Lynn DeRoos, Glenn Delmont Johnson, John Stephen Marhevka, Venkateswarlu Pothapragada
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Publication number: 20020064367Abstract: A pressure vessel capable of withstanding elevated hydrostatic pressures, and elevated temperature comprises a tubular cylindrical casing capable of withstanding extreme hydrostatic pressures having an internal cavity and a first and second opening at each end permitting access to said internal cavity. The internal cavity is divided into a first and second cylindrical plug region extending inward from the first and second opening and a hollow interior region.Type: ApplicationFiled: December 7, 2000Publication date: May 30, 2002Inventors: Akbar Arab-Sadeghabadi, Agop H. Cherbettchian, Donald A. Frederick, Kurt R. Carlson
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Publication number: 20020063098Abstract: A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web.Type: ApplicationFiled: June 14, 2001Publication date: May 30, 2002Applicant: 3M Innovative Properties CompanyInventors: Mark Eugene Mueller, Donald Frederick Hagen, Yuri Cheburkov, Fred Lynn DeRoos, Glenn Delmont Johnson, John Stephen Marhevka, Venkateswarlu Pothapragada
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Publication number: 20010047117Abstract: A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web.Type: ApplicationFiled: June 13, 2001Publication date: November 29, 2001Applicant: 3M Innovative Properties CompanyInventors: Mark Eugene Mueller, Donald Frederick Hagen, Yuri Cheburkov, Fred Lynn DeRoos, Glenn Delmont Johnson, John Stephen Marhevka, Venkateswarlu Pothapragada
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Publication number: 20010038820Abstract: There is provided a granular absorbent based on calcium sulfate that may be used for absorbing oil and water-based liquids. The absorbent includes calcium sulfate obtained from gypsum, waste gypsum from wallboard, waste gypsum separated from wallboard, synthetic gypsum and mixtures thereof. The granular absorbent is ground and screened to a particle size between 4 mesh and about 100 mesh. In another aspect of the invention, an effective amount of a binder such as a clay, lignin or starch is added to the calcium sulfate to assist the calcium sulfate to pelletize and form granules. The granules are sized and dried. The granular absorbents are effective in absorbing oil or water and are easily disposed of. There is also disclosed processes for making the granular absorbents.Type: ApplicationFiled: December 5, 2000Publication date: November 8, 2001Applicant: Waste Reduction ProductsInventors: Richard Binion Steele, Donald Frederick Evans
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Publication number: 20010029762Abstract: There is provided a soil amendment product of agglomerated or compacted calcined calcium sulfate. The soil amendment product is screened to a particle size between 6 mesh and about 100 mesh. In another aspect of the invention, an effective amount of a binder such as a clay, lignin or starch is added to the calcium sulfate to assist the calcium sulfate to pelletize. The pelletized calcium sulfate is sized and calcined. There is also disclosed processes for making the soil amendment products.Type: ApplicationFiled: May 9, 2001Publication date: October 18, 2001Applicant: Waste Reduction Products CorporationInventors: Richard Binion Steele, Donald Frederick Evans, Mark S. Booth, Malcolm J. Proper
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Patent number: 6288975Abstract: A system for sensing subterranean acoustic waves emitted from an acoustic source includes a plurality of laser sources, a plurality of subterranean optical sensors, at least one optical detector, and electronics. The laser sources each emit light at a different frequency. The subterranean optical sensors receive the light and alter the light in response to the acoustic waves. The optical detector receives the altered light and outputs an electrical signal. The electronics receives the electrical signal and converts it into seismic data format. Preferably, the light emitted from the optical sources is modulated at a plurality of modulation frequencies. The electronics can be used to demodulate the signal. The electronics may demodulate the electrical signal by mixing the signal with periodic waveforms having frequencies corresponding to the modulation frequencies and twice the modulation frequencies.Type: GrantFiled: October 29, 1999Date of Patent: September 11, 2001Assignee: Litton Systems, Inc.Inventors: Donald A. Frederick, Michael J. Carter, Samuel Fersht, David C. Winslow
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Publication number: 20010014192Abstract: Sensor arrays utilizing standard 1×2 couplers reduce the differences in the returned optical power levels by appropriate selection of the coupling ratios. Preferred embodiments are described that comprise 6 distribution fiber lines and 16 return fiber lines. One embodiment includes 16 sensor groups in which each sensor group has a dedicated return line. In another embodiment, 8 sensor groups are configured so that no two adjacent sensors have either a common distribution fiber line or a common return fiber line.Type: ApplicationFiled: April 2, 2001Publication date: August 16, 2001Inventors: Craig W. Hodgson, Donald A. Frederick
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Patent number: 6269198Abstract: A system for sensing subterranean acoustic waves emitted from an acoustic source includes a plurality of laser sources, each emitting light at different frequencies; a plurality of subterranean optical sensors, receiving and altering the light in response to acoustic waves; at least one optical detector, receiving the altered light and outputting an electrical signal; and electronics, receiving the electrical signal and converting it into seismic data format. Light from the optical sources is modulated at a plurality of modulation frequencies. The electronics can demodulate the signal by mixing the signal with periodic waveforms having frequencies corresponding to one and two times the modulation frequencies.Type: GrantFiled: October 29, 1999Date of Patent: July 31, 2001Assignee: Litton Systems, Inc.Inventors: Craig W. Hodgson, Donald A. Frederick
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Patent number: 6249622Abstract: Sensor arrays utilizing standard 1×2 couplers reduce the differences in the returned optical power levels by appropriate selection of the coupling ratios. Preferred embodiments are described that comprise 6 distribution fiber lines and 16 return fiber lines. One embodiment includes 16 sensor groups in which each sensor group has a dedicated return line. In another embodiment, 8 sensor groups are configured so that no two adjacent sensors have either a common distribution fiber line or a common return fiber line.Type: GrantFiled: June 30, 1998Date of Patent: June 19, 2001Assignee: Litton Systems, Inc.Inventors: Craig W. Hodgson, Donald A. Frederick
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Publication number: 20010002386Abstract: There is provided a granular absorbent based on calcium sulfate that may be used for absorbing oil and water-based liquids. The absorbent includes calcium sulfate obtained from gypsum, waste gypsum from wallboard, waste gypsum separated from wallboard, synthetic gypsum and mixtures thereof. The granular absorbent is ground and screened to a particle size between 4 mesh and about 100 mesh. In another aspect of the invention, an effective amount of a binder such as a clay, lignin or starch is added to the calcium sulfate to assist the calcium sulfate to pelletize and form granules. The granules are sized and dried. The granular absorbents are effective in absorbing oil or water and are easily disposed of. There is also disclosed processes for making the granular absorbents.Type: ApplicationFiled: January 4, 2001Publication date: May 31, 2001Applicant: ABSORBENT AND PROCESS FOR MAKING SAMEInventors: Richard Binion Steele, Donald Frederick Evans
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Patent number: 6206947Abstract: There is provided an animal litter composition of agglomerated or compacted calcined calcium sulfate absorbent. The animal litter is screened to a particle size between 6 mesh and about 100 mesh. In another aspect of the invention, an effective amount of a binder such as a clay, lignin or starch is added to the calcium sulfate to assist the calcium sulfate to pelletize. The pelletized calcium sulfate is sized and calcined. The litter compositions are effective in absorbing urine, clumping and are easily disposed of. There is also disclosed processes for making the animal litter compositions.Type: GrantFiled: December 30, 1999Date of Patent: March 27, 2001Assignee: Waste Reduction Products Corp.Inventors: Donald Frederick Evans, Richard Binion Steele, Malcolm Edward Sumner
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Patent number: 6204467Abstract: A method and apparatus for resistive welding using an electrode holder having an elongated cylinder. The cylinder has a closed end and an open end. The cylinder contains a moveable piston. The piston includes a compression surface and an end adapted to retain a welding electrode. A compressible biasing member is positioned within the cylinder and is compressed between the closed end and the compression surface. An electrode is attached to the holder. The holder is preferably used as a lower electrode holder opposite a moveable upper cylinder. A work piece is placed between the upper cylinder and lower holder. The upper cylinder is extended and applies a force to the holder through the electrodes and work piece. The force causes the biasing member to compress within the lower elongated cylinder and apply a counter force against the lower surface electrode.Type: GrantFiled: March 24, 1998Date of Patent: March 20, 2001Assignee: Ford Global Technologies, Inc.Inventors: Ben Edward Greenholtz, Jr., Frank Joseph Ourednik, Ken George Englebry, Donald Frederick Maatz, Jr.
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Patent number: 6147268Abstract: A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula ##STR1## wherein A=F or R.sub.f ; X=H, F, Cl, R.sub.f, or YR.sub.f ; Z=H, F, Cl, or R.sub.f ; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each R.sub.f is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two R.sub.f groups can be linked to form a cyclic structure. The R.sub.f alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred. The R.sub.Type: GrantFiled: September 16, 1998Date of Patent: November 14, 2000Assignee: 3M Innovative Properties CompanyInventors: Mark Eugene Mueller, Donald Frederick Hagen, Yuri Cheburkov, Fred Lynn DeRoos, Glenn Delmont Johnson, John Stephen Marhevka, Venkateswarlu Pothapragada
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Patent number: 6104846Abstract: The length of optical cable affected when splicing in sensors is reduced by cutting and splicing two distribution fiber lines and two return fiber lines to each sensor. The cable includes a spare distribution fiber line and a spare return fiber line. The optical cable is first stripped back to expose the optical fibers therein. For both the distribution and return lines, one fiber is cut at the proximal end of the stripped back portion of the cable, and another fiber is cut at the distal end of the stripped back portion. These fibers are then fused to respective ports on the sensor. Thus, each of the optical channels is formed from more than one optical fiber. The resulting cable is less stiff and more flexible.Type: GrantFiled: July 31, 1998Date of Patent: August 15, 2000Assignee: Litton Systems, Inc.Inventors: Craig W. Hodgson, Donald A. Frederick
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Patent number: 6038926Abstract: A pressure measuring device which utilizes an array of optical, non-acoustic pressure sensors with a laser light source which generates a pulsed light signal into a light transmitting cable, wherein the pulsed light signal propagates along the light transmitting cable through the array of optical pressure sensors. A plurality of optical couplers are attached to the light transmitting cable at multiple locations spaced apart from one another in order to branch off at least a portion of the pulsed light each location. Each of the plurality of optical couplers includes a respective optical pressure sensor and a pressure insensitive reflector, wherein the branched off portion of the pulsed light signal is transmitted into to both the optical pressure sensor and the reflector. Each optical pressure sensor reflects a pressure indicating signal back into the optical coupler, while the pressure insensitive reflector reflects a reference signal back into the optical coupler.Type: GrantFiled: September 4, 1997Date of Patent: March 21, 2000Inventors: Donald A. Frederick, David B. Hall
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Patent number: H1922Abstract: A composition suitable for coating fabrics is provided. The composition comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene; a filler; a processing aid, and a curing agent. A fabric coated with the composition is also provided.Type: GrantFiled: January 11, 1994Date of Patent: November 7, 2000Assignee: Exxon Chemical Patents Inc.Inventors: James Vincent Fusco, Donald Frederick Kruse, Irwin Jerome Gardner