Patents Assigned to Mainstream Engineering Corporation
  • Patent number: 10605495
    Abstract: A system and method are provided to allow the replacement of a costly electrically commutated blower or fan motor with a less efficient motor such as a permanent split capacitor motor operating at a predetermined speed, without regard to the specific electrically commutated motor command signals or programming being used by the original equipment manufacturer. A retrofittable control board is employed to activate the replacement motor by energizing the replacement blower motor when an electrically commutated blower motor command signal is observed on any one of the signal lines which are continuously monitored simultaneously.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 31, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Luke Falls, Dana L. Elliot, Robert P. Scaringe, David C. Hahn
  • Patent number: 10591221
    Abstract: A window assembly heat transfer system is disclosed in which a window member has a selected transparency to monitored or sensed light wavelengths. One or more passages are provided in the window member for flowing a single-phase or two-phase heat transfer fluid, the passages being optically non-transparent to the monitored or sensed light wavelengths. A mechanism allows either evaporation or condensation of the fluid and/or balancing of a flow of the fluid within the passages. In one embodiment, the window assembly can be made by producing passages in a top surface of a first single plate, optionally producing passages in a bottom surface of a second single plate and bonding the top surface of the first plate to a bottom surface of a second single plate to form the window member with the passage or passages. In another embodiment, the window assembly can be made by providing a core around which the window member material is grown and thereafter removing the core to produce the passage or passages.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: March 17, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Brian P. Tucker, Joshua D. Sole, Justin J. Hill, Robert P. Scaringe
  • Patent number: 10577684
    Abstract: A process is disclosed for restructuring crystalline grain structure and grain size of a material to produce an ultrafine-grain structure. An electron beam source is configured in relation to specific properties of a material forming a solid body to selectively irradiate a surface and a subsurface of that body with electrons at desired locations on the body and to create at least one selectively localized molten pool of defined size in the body. Heat is generated sufficiently rapidly by the beam source to create thermal gradients of sufficient magnitude to permit the body outside of the pool to act as a heat sink and rapidly cool the at least one molten pool, whereby an ultrafine-grain structure and grain size is produced by freezing grain growth upon occurrence of crystal nucleation.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: March 3, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Ryan D. Reeves, Thomas M. Lasko, Justin J. Hill
  • Patent number: 10559742
    Abstract: A mounting pad system and method for an HVAC outdoor unit that includes providing a lightweight fillable pad shell containing a gelling material and having securing slots extending from an underside surface to an upper side surface of the shell. The shell is filled with water through a port at its upper surface. Prior to leveling the filled pad on the soil at the site and installation of the outdoor unit, securing straps are inserted into the slots from the underside surface of the shell so as to extend through an upper surface thereof. The filling port is covered when the HVAC unit is placed on top of the pad. One or more securing anchors can be used to anchor the pad to the ground, which are also covered when the HVAC unit is place on top of the pad and an anti-theft cable can be employed to further prevent theft.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: February 11, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Elliott M. Sting, Robert P. Scaringe
  • Patent number: 10557589
    Abstract: A mounting pad system for securing equipment, such as an HVAC outdoor unit or a standby generator, is provided in the form of a lightweight fillable pad member having a plurality of receivers located on a top surface of the pad member. The receivers are associated with attachment points located on the equipment and are used to secure the equipment to the pad. The pad member contains a filling port on its top surface and is configured as a molded hollow shell containing a gelling material which, when mixed with water, provides support to reduce deflection of the pad member caused by the equipment secured to the pad, prevents damage to the pad that would otherwise be caused by the expansion of internal contents upon freezing and prevents leakage of internal contents of the fillable pad in the event of an unintended breach in the hollow shell. The pad member is provided with at least one through-hole that acts as a supporting structure.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: February 11, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Andrew L. Carpenter, Robert P. Scaringe
  • Patent number: 10550330
    Abstract: An apparatus and method are described for high-yield fast pyrolysis of biomass feedstock to produce a liquid bio-oil product. A bubbling fluidized bed reactor is provided having an integrated, rapid quench apparatus for minimizing secondary cracking reactions that can otherwise lower the yield of bio-oil. A quench stream is provided inside the reactor to minimize the residence time that the product vapors spend at high temperature where cracking can occur. The quench stream is introduced downstream of the fluidized bed but still internal to the reactor. The fluidized bed medium is constrained to the bottom of the reactor and is not cooled by the quench stream.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 4, 2020
    Assignee: Mainstream Engineering Corporation
    Inventors: Paul E. Yelvington, Dustin J. Zastrow, Nicholas R. Schwartz
  • Patent number: 10495362
    Abstract: A refrigerant and oil treatment composition for introduction into a vapor-compression system such as a refrigerator, heat pump, freezer, air conditioner, thermal control device, and refrigerant recovery apparatus has a composition alcohol and a drying agent. The drying agent is 2,2 -dimethoxypropane which can react with moisture in the system to form an alcohol as a reaction product. The alcohol reaction product along with the composition alcohol separates any acid in the system from oil, refrigerant and hard surfaces of the system to form an acid-containing solvent composition. The quantity of the composition introduced into the system is based on the adsorption capacity of the filter-drier.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: December 3, 2019
    Assignee: Mainstream Engineering Corporation
    Inventors: Ted J. Amundsen, Vincent J. Storhaug, Robert P. Scaringe
  • Patent number: 10408493
    Abstract: A mounting pad system for securing equipment, such as an HVAC outdoor unit, is provided in the form of a lightweight fillable pad member having securing slots extending from an underside surface to an upperside surface of the pad member. Securing strap assemblies are associated with at least some of the securing slots and are insertable into the latter to secure the equipment therebetween. The pad member contains a filling port on its upper surface and is configured as a molded hollow shell containing a gelling material which, when mixed with water, provides support to reduce deflection of the pad member caused by the equipment secured to the pad, prevents damage to the pad that would otherwise be caused by the expansion of internal contents upon freezing and prevents leakage of internal contents of the fillable pad in the event of an unintended breach in the hollow shell.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: September 10, 2019
    Assignee: Mainstream Engineering Corporation
    Inventors: Andrew L. Carpenter, Robert P. Scaringe
  • Patent number: 10352865
    Abstract: A flow cell and method for photometric transmission measurements are disclosed in which a folded optical path provides for co-located, collinear fiber optic read and illumination cables that can be bundled together. Light passes through a fluid sample, is reflected off a pair of right-angle turning mirrors and returns through the fluid for a second pass. A center divider separates fluid passages on the first pass of the light through the fluid and the second pass of the light through the fluid to block any undesired backscattered light from reaching a detector.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 16, 2019
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventors: Paul E. Yelvington, Andrew L. Carpenter, Andrew L. Wagner
  • Patent number: 10309398
    Abstract: A fluid-moving rotary device that has a drive mechanism whose rotational axis is aligned with a rotational axis of a driven component and another component that rotates about an axis offset from rotational axis of the driven component. The drive mechanism is located on a fluid inlet side of the components and is cooled by the fluid entering the device.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: June 4, 2019
    Assignee: Mainstream Engineering Corporation
    Inventor: Jerald G. Wagner
  • Patent number: 10234180
    Abstract: A flow control cartridge is used with a cold plate to form a cold plate assembly within which a refrigerant circulates for cooling at least one heat generating device. The cartridge includes a thermal expansion valve and a sensing portion that with a bellows-type actuator within the cartridge. The bellows-type actuator is located directly in a stream of the refrigerant exiting the cold plate. The thermal expansion valve is comprised of a main body having an inlet orifice arranged to receive refrigerant that has been subcooled from a condenser of a vapor compression system or a recuperative heat exchanger, and a needle arranged in an expanded section of the main body in association with discharge ports in the expanded section for discharging the refrigerant in a two-phase state into the cold plate.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: March 19, 2019
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventors: David M. Sykes, Joshua C. Dominico, Robert P. Scaringe, Gregory S. Cole, Daniel A. Staples
  • Patent number: 10184473
    Abstract: A rotary device has at least one seal arrangement between inner and outer components to constrain fluid flow there between. The seal arrangement has a smooth surface and an opposing surface with a plurality of grooves and lands along a length of the at least one seal with the lands are separated from the smooth surface by a predetermined gap. The grooves have a bottom surface substantially parallel to the smooth surface. The width of the lands is between about 125% to 145% of the width of the grooves. The groove depth is between about 30% to 50% of the width of the grooves. A corner radius between the bottom surface of the grooves and side walls of the grooves is between about 25% to 100% of the depth of the grooves.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 22, 2019
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventors: Jerald G. Wagner, David R. Markham
  • Publication number: 20180220830
    Abstract: A pot support and method of use are disclosed for improving the efficiency at fuel-fired cookstoves. Heat transfer to a cooking vessel is improved by directing hot exhaust gases along the outer walls of a cooking vessel by providing a vertical lip at the outer edge of the pot support that lends to an improvement in cookstove thermal efficiency.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 9, 2018
    Applicant: Mainstream Engineering Corporation
    Inventors: Andrew L. Carpenter, Alex D. Paulsen, Tyler Kunsa, Paul E. Yelvington
  • Patent number: 10036578
    Abstract: A method is disclosed for uniformly cooling a cooling plate of a heat generating device. Sub-cooled refrigerant is flowed through a thermal expansion valve and then into the cooling plate as a two-phase refrigerant where the refrigerant is superheated. Any refrigerant remaining in a fluid state before reaching a sensing portion associated with the thermal expansion valve and exiting the cooling plate can be completely vaporized by a recuperative heat exchanger. The superheated refrigerant is then passed to the sensing portion so that the superheated refrigerant directly transfers heat to a fluid within the sensing portion and causes a pressure change that is communicated to a needle of the thermal expansion valve.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: July 31, 2018
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventors: David M. Sykes, Joshua C. Dominico, Robert P. Scaringe, Gregory S. Cole, Daniel A. Staples
  • Patent number: 10017700
    Abstract: An apparatus and method are described for high-yield fast pyrolysis of biomass feedstock to produce a liquid bio-oil product. A bubbling fluidized bed reactor is provided having an integrated, rapid quench apparatus for minimizing secondary cracking reactions that can otherwise lower the yield of bio-oil. A quench stream is provided inside the reactor to minimize the residence time that the product vapors spend at high temperature where cracking can occur. The quench stream is introduced downstream of the fluidized bed but still internal to the reactor. The fluidized bed medium is constrained to the bottom of the reactor and is not cooled by the quench stream.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: July 10, 2018
    Assignee: Mainstream Engineering Corporation
    Inventors: Paul E. Yelvington, Dustin J. Zastrow, Nicholas R. Schwartz
  • Patent number: 10012422
    Abstract: A moisture treatment and leak sealant product for a vapor-compression system has two separate components. One of the components includes a viscosity modifying additive, excluding oil compounds, to more closely match a viscosity of the product to that of lubricating oil in the system and a drying agent to remove moisture from the system. The second of the components includes a silane leak sealant and also the viscosity modifying additive.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 3, 2018
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventors: Ted J. Amundsen, Robert P. Scaringe
  • Patent number: 9896338
    Abstract: A reactor and method for seeded growth of nano-products such as carbon nanotubes, wires and filaments in which selected precursors are introduced into the reactor which is heated to a temperature sufficient to induce nano-product formation from interaction between the precursor gases and a nanopore templated catalyst. The selected precursors are segregated in the reactor through a plate defining two chambers which are sealed off from each other except for a void space provided in the plate. The void space is closed off by a membrane having nanopores and a catalyst formed as a layer. Atomic transfer of material from the selected precursors to form the nano-products on the catalyst layer in the other of the chambers occurs by diffusion through the catalyst layer to form the nano-product on the other of the chambers absent a pressure drop between the two chambers.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: February 20, 2018
    Assignee: Mainstream Engineering Corporation
    Inventors: Gregory Chester, Justin J. Hill
  • Patent number: 9881478
    Abstract: A diagnostic monitoring system and method is employed for one or more vapor compression systems such as air conditioners and heat pumps having a compressor, an indoor air handler fan coil and an outdoor condensor. Temperature, voltage and current sensors are provided at the outdoor condensor to determine that at least one vapor compression system is operating properly. Data obtained from the sensors is wirelessly transmitted to a receiving-device for use by the systems' custodian or repair service provider and includes information concerning an occurrence of periods when one or more of the vapor compression systems are operating at an abnormal state.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: January 30, 2018
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventors: Robert P. Scaringe, Robert Paul Roth, Daniel Lambert, Erik P. Thomas, Chad L. Carff
  • Patent number: 9873856
    Abstract: An aerosolized HVAC/R system solvent for decontaminating HVAC/R components and line sets The solvent contains 25-90 wt % propellant, and 10-75 wt % solvent mixture which is about 60-95 wt % trans-1,2, dichloroethylene, about 5-20 wt % n-propanol, and an inerting constituent providing a weight percent ratio of the inerting constituent to n-propanol of less than 1.5. The solvent is packaged in a container that is connected to the HVAC/R components or line sets to be decontaminated for supplying the solvent mixture under pressure to the HVAC/R components or line sets.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 23, 2018
    Assignee: MAINSTREAM ENGINEERING CORPORATION
    Inventor: Ted J. Amundsen
  • Patent number: 9837599
    Abstract: An article composed of sintered particles is produced by depositing ligand-containing particles on a substrate, then scanning the substrate with an electron beam that generates sufficient surface and subsurface heating to substantially eliminate the ligands and melt or sinter the particles into a cohesive film with superior charge carrier properties. The particles are sintered or melted together to form a polycrystalline layer that is substantially ligand-free to form, for example, a film such as a continuous polycrystalline film. The scanning operation is conducted so as to heat treat a controllably localized region at and below a surface of the particles by selecting a rate of deposited energy at the region to exceed a rate of conduction away from the substrate.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: December 5, 2017
    Assignee: Mainstream Engineering Corporation
    Inventors: Ryan D. Reeves, Thomas M. Lasko, Justin J. Hill