Patents by Inventor Harold Walker
Harold Walker 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: 9365370Abstract: Systems and methods for reclaiming bulk solid material from storage stockpiles or from watercraft. A storage and reclaim system includes a support surface for supporting a stockpile of bulk material. The support surface is defined by a plurality of individual material support structures geometrically arranged and positioned with reference to each other so that the support surface is essentially continuous. Each of the material support structures in turn includes a dish or funnel-like structure having a generally conical floor surface sloping towards an individual discharge opening fitted with a discharge control gate. An array of vibrators is mechanically connected to each of the material support structures so as to introduce vibrational energy into the dish or funnel-like structures sufficient to either avoid a stable reclaim cone or to destabilize a stable reclaim cone which may form in order to maintain material discharge flow.Type: GrantFiled: April 23, 2009Date of Patent: June 14, 2016Inventor: Harold A. Walker
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Publication number: 20100272543Abstract: Systems and methods for reclaiming bulk solid material from storage stockpiles or from watercraft. A storage and reclaim system includes a support surface for supporting a stockpile of bulk material. The support surface is defined by a plurality of individual material support structures geometrically arranged and positioned with reference to each other so that the support surface is essentially continuous. Each of the material support structures in turn includes a dish or funnel-like structure having a generally conical floor surface sloping towards an individual discharge opening fitted with a discharge control gate. An array of vibrators is mechanically connected to each of the material support structures so as to introduce vibrational energy into the dish or funnel-like structures sufficient to either avoid a stable reclaim cone or to destabilize a stable reclaim cone which may form in order to maintain material discharge flow.Type: ApplicationFiled: April 23, 2009Publication date: October 28, 2010Inventor: Harold A. Walker
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Patent number: 7411136Abstract: Multiple-batch train loading systems and methods, for example for loading coal, which are capable of accommodating railcars of a wide range of capacities and designs. Each railcar is loaded with at least a relatively large initial weighed batch having a weight at least approximately equal to the maximum available capacity of a weigh bin, and a relatively small final weighed batch. The initial weighed batch and the final weighed batch are both made up with precision. If required, one or more intermediate weighed batches are loaded into the railcar. The intermediate batches, if required, are made up rapidly, but not necessarily with precision.Type: GrantFiled: July 3, 2006Date of Patent: August 12, 2008Inventor: Harold A. Walker
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Publication number: 20080031577Abstract: A method and system is disclosed for locking and releasing a module utilized in a transceiver system that includes a plurality of modules in close proximity with one another. The module is generally configured to include a handle with an associated cam formed in a first section of the module. The handle is moveable in a direction to allow the cam to move an associated ejector button integrated with the module in order to release the module from the transceiver system, thereby permitting the module to be efficiently removed from the transceiver system. The module may thus be removed from the transceiver system utilizing the handle. The module may be locked into the transceiver system when the handle is placed in an upward position.Type: ApplicationFiled: August 13, 2007Publication date: February 7, 2008Applicant: Finisar CorporationInventors: Harold Walker, Richard Bell
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Publication number: 20080000699Abstract: Multiple-batch train loading systems and methods, for example for loading coal, which are capable of accommodating railcars of a wide range of capacities and designs. Each railcar is loaded with at least a relatively large initial weighed batch having a weight at least approximately equal to the maximum available capacity of a weigh bin, and a relatively small final weighted batch. The initial weighted batch and the final weighed batch are both made up with precision. If required, one or more intermediate weighed batches are loaded into the railcar. The intermediate batches, if required, are made up rapidly, but not necessarily with precision.Type: ApplicationFiled: July 3, 2006Publication date: January 3, 2008Inventor: Harold A. Walker
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Publication number: 20070237218Abstract: A method and apparatus for transmitting information combining abrupt phase change modulation with an ultra narrow band filter to remove unnecessary Fourier sidebands, resulting in a single frequency being transmitted to carry data. The method examines and detects the changes in the carrier phase only, after filtering to remove or reduce all sidebands, to obtain a usable signal. Only a single frequency with phase changes is transmitted. An ultra narrow band filter, having a rapid rise time and near zero group delay, passes the near instantaneous modulation changes of phase in the carrier.Type: ApplicationFiled: May 24, 2007Publication date: October 11, 2007Inventor: Harold Walker
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Publication number: 20060248693Abstract: A shoelace knot retaining apparatus comprises an upper tab member, a lower tongue member and a fold for enabling the upper tab member and the lower tongue member to fold away from each other to dispose only one of the upper tab member and the lower tongue member to engage the shoelace knot. Further, the fold enables both of the upper tab member and the lower tongue member to engage the shoelace knot, whereby the upper tab member and the lower tongue member are disposed in a shoelace knot securing position to prevent the shoelace knot from untying. In particular, one of the upper tab member and the lower tongue member has at least one first opening of a diameter substantially equal to the diameter of the shoelace to thereby limit the movement of the shoelace with respect to the one opening. The other of the upper tab member and the lower tongue member has at least one second opening. Each of the one first opening and the one second opening has respectively a first extremity and a second extremity.Type: ApplicationFiled: May 2, 2006Publication date: November 9, 2006Inventor: Harold Walker
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Publication number: 20060181861Abstract: A leadframe is disclosed having an unreduced leadframe thickness. The leadframe includes a portion of reduced thickness. The portion of reduced thickness can be created by a subtractive process, such as an etching process. The leadframe further includes a gap located within the portion of reduced thickness. The gap is located between metal portions of the leadframe and extends through at least a portion of the reduced thickness. The width of the gap can be less than the unreduced leadframe thickness as a result of the portion of reduced thickness.Type: ApplicationFiled: February 14, 2006Publication date: August 17, 2006Inventor: Harold Walker
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Publication number: 20060051031Abstract: Reducing transmission of electromagnetic waves through a barrel portion of an optical module. A barrel for optically coupling an optical device to an optical fiber within a fiber optic cable can include a plastic portion and a metallic shielding portion for reducing transmission through the barrel. An optical device can be coupled to the plastic portion. The metallic shielding portion can be coupled to the plastic portion and surround at least a portion of the plastic portion. The metallic shielding portion can be shaped and configured so as to reduce transmission of electromagnetic radiation through the barrel.Type: ApplicationFiled: September 9, 2005Publication date: March 9, 2006Inventor: Harold Walker
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Publication number: 20050078720Abstract: A housing for opto-electronic array devices. The housing includes a base and walls that form a region that receives an opto-electronic semiconductor array. Conductive traces are disposed on a wall such that a front part of the traces are exposed for external electrical connections, while the back part is exposed for internal electrical connections. A transparent substrate having a plurality of micro-lenses cover the base, walls and opto-electronic semiconductor array device. Each micro lens is beneficially made from optical epoxy that is deposited by an ink-jet nozzle. The base and walls are beneficially comprised of a ceramic.Type: ApplicationFiled: October 8, 2003Publication date: April 14, 2005Inventors: Harold Walker, Klein Johnson, Yue Liu, Bo Chen
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Publication number: 20030012301Abstract: The invention is a method whereby a digital data bearing signal, comprising a single frequency generated by encoding a nonreturn-to-zero (NRZ) signal so as to cause it to have no frequency spread, is added to the signals presently being transmitted over cellular telephone systems. The signal to be added is comprised of a single frequency, which alternates in phase at coded time intervals. The channels (1, 3) presently in use have bandwidth limits specified by regulatory authorities, which have a small guard space (2, 4) between them. The single frequency signal, which carries data at high data rates, can be added between these channels in a way that will not interfere with the channels in use. Frequency-hopping spread-spectrum is used to further reduce any interaction between channels.Type: ApplicationFiled: July 18, 2002Publication date: January 16, 2003Inventor: Harold Walker
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Patent number: 6445737Abstract: A wireless digital transmission and receiving method combines phase reversal keying with pulse position modulation. Modulation of a transmitted signal implements pulses that are of extremely short duration to indicate ones and zeros. These pulses can be as narrow as one cycle of the carrier frequency. As such, they often appear as missing cycles or pulses in a sequence of carrier cycles. The method synthesizes a sideband with no carrier or other sidebands from the carrier of an input signal. This synthesized sideband is represented by a broad sinx/x spectrum with a principal power peak at the modulated frequency and numerous weaker peaks of varying frequencies and peak levels. The time duration of these smaller peaks is such that they have negligible mean power levels. Thus, the synthesized signal can withstand the degradation caused by multipath interference and fading. The weaker peaks also do not cause measurable interference with other communications devices.Type: GrantFiled: January 31, 2002Date of Patent: September 3, 2002Inventor: Harold Walker
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Publication number: 20020110190Abstract: A wireless digital transmission and receiving method combines phase reversal keying with pulse position modulation. Modulation of a transmitted signal implements pulses that are of extremely short duration to indicate ones and zeros. These pulses can be as narrow as one cycle of the carrier frequency. As such, they often appear as missing cycles or pulses in a sequence of carrier cycles. The method synthesizes a sideband with no carrier or other sidebands from the carrier of an input signal. This synthesized sideband is represented by a broad sinx/x spectrum with a principal power peak at the modulated frequency and numerous weaker peaks of varying frequencies and peak levels. The time duration of these smaller peaks is such that they have negligible mean power levels. Thus, the synthesized signal can withstand the degradation caused by multipath interference and fading. The weaker peaks also do not cause measurable interference with other communications devices.Type: ApplicationFiled: January 31, 2002Publication date: August 15, 2002Inventor: Harold Walker
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Patent number: 6155767Abstract: A three-batch method for the precision loading of coal into the individual railroad cars of a moving train, and a loadout system implementing the method. For each railcar, three successive batches are made up and discharged from a single weigh bin. The loadout rate of a single-batch system is approached, but at a significantly reduced facility cost. The first batch is large enough to fill the front of the railcar and to establish a "plugged flow condition," allowing the second batch to be made up and discharged while maintaining a constant load profile in the railcar. After the weigh bin is emptied of the second batch, the third batch is made up and discharged. The third batch is made up with greater precision than the first and second batches.Type: GrantFiled: March 10, 2000Date of Patent: December 5, 2000Inventor: Harold A. Walker
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Patent number: 5930303Abstract: A method for transmitting "biphase" encoded digital signals including the steps of setting an aperture corresponding to a data bit; dividing said aperture into a plurality of segments; setting a first segment, selected from said plurality of segments of said aperture, dependent upon whether the bit is a digital one or zero; setting a second segment, selected from said plurality of segments of said aperture, so as to fit the remaining aperture of the data bit; and, transmitting said first and second segments of said data bit; wherein a narrow spectrum results containing no low frequency components and separated from 0 Hz by an amount equal to the data rate or 1/2 the data rate.Type: GrantFiled: November 3, 1997Date of Patent: July 27, 1999Inventor: Harold Walker
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Patent number: 5772390Abstract: A method for loading a moving railroad car from front to back with a target weight of particulate material from a loading unit having a silo and first and second weigh bin, which bin means have a combined material weight capacity of less than the target weight, the method comprising the steps of:(a) making a first charge of material into the first bin;(b) discharging a first quantity of material from the first bin into a forward portion of the car;(c) making a second charge of material into the first bin;(d) discharging a second quantity of material from the first bin into a rearward portion of the car, wherein the weights of the first and second quantities are determined and, as a combined weight, is less than the target weight;(e) making a charge of material into the second bin;(f) discharging from the second bin into the car a topping quantity of material equal in weight, to within about 0.Type: GrantFiled: June 6, 1997Date of Patent: June 30, 1998Inventor: Harold A. Walker
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Patent number: 4954036Abstract: A device for depositing particulate matter into a storage silo having a system of containers which are alternately filled at the top of said silo and lowered into said silo where the particulate matter is deposited, free falling only a short distance onto the top of previously deposited particulate matter. In a second embodiment, the particulate matter is deposited onto a conveyor having containers formed thereon, transporting said particulate matter down into said silo and depositing said particulate matter onto a second conveyor which distributes particulate matter onto the previously deposit particulate matter, said second conveyor being maintained at a certain height above the level of the previously deposited particular matter.Type: GrantFiled: July 15, 1988Date of Patent: September 4, 1990Inventor: Harold A. Walker
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Patent number: 4031690Abstract: The disclosure embraces noise abatement apparatus and a method of abating noise in a yarn texturing machine of the type that employs rotatable spindles driven by endless belts, heater means and yarn transport means, all of which are spaced along a frame between a gear housing and a motor housing; the apparatus includes sound insulating walls for enclosing the timing belt driven pulley located nearest the gear housing together with tunnels lined with sound absorbing material through which the endless belts of the machine pass from the gear housing over the frame of the machine; also, there are included means for isolating the vibrations of idler pulleys for the drive belts from the mounting rail as well as reducing sound propagation from the rotating idler pulleys; noise generated from within the gear housing of the machines is also suppressed.Type: GrantFiled: October 2, 1975Date of Patent: June 28, 1977Assignee: Burlington Industries, Inc.Inventors: Lorimer Phillip Thomas, Robert Harold Walker
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Patent number: RE37062Abstract: A method for loading a moving railroad car from front to back with a target weight of particulate material from a loading unit having a silo and first and second weigh bin, which bin means have a combined material weight capacity of less than the target weight, the method comprising the steps of: (a) making a first charge of material into the first bin; (b) discharging a first quantity of material from the first bin into a forward portion of the car; (c) making a second charge of material into the first bin; (d) discharging a second quantity of material from the first bin into a rearward portion of the car, wherein the weights of the first and second quantities are determined and, as a combined weight, is less than the target weight; (e) making a charge of material into the second bin; (f) discharging from the second bin into the car a topping quantity of material equal in weight, to within about 0.Type: GrantFiled: December 2, 1999Date of Patent: February 20, 2001Inventor: Harold A. Walker
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Patent number: D578763Type: GrantFiled: November 17, 2006Date of Patent: October 21, 2008Inventor: Harold Walker