Patents Assigned to Robertshaw Controls Company
  • Patent number: 11421789
    Abstract: Embodiments of a valve having a housing including an inlet, an outlet, and an interior chamber in fluid communication with the inlet and the outlet are disclosed. The valve also includes a seat fitting having a first screen held in place by a first retainer ring. The seat fitting includes a valve seat. The valve further includes an outlet fitting having a second screen held in place by a second retainer ring. The second retainer ring includes a plurality of ribs extending from a ring body such that the plurality of ribs create a gap between the ring body and the second screen. Further, the valve includes a valve plug configured to selectively engage the valve seat to open and close a passage between the interior chamber and the outlet. The seat fitting is contained at least partially within the outlet fitting to define the outlet of the housing.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: August 23, 2022
    Assignee: Robertshaw Controls Company
    Inventors: Ian Rodgers, Tony Leeseberg, James E. Pearson
  • Patent number: 11408516
    Abstract: A regulator valve has an anti-seize feature when in the hard stop position. The valve is providing with a biasing force away from the hard stop position when in the hard stop position sufficient to prevent seizure of the drive screw in the hard stop position. This biasing force may be provided by a resilient member and/or a plastic, instead of a metal, adjusting screw which may provide sufficient resiliency to prevent seizing in the hard stop position. A resilient member could be a washer such as a spring washer, a wave washer, or even a compressible flat.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: August 9, 2022
    Assignee: Robertshaw Controls Company
    Inventors: Ian Rodgers, Brandon Cole, Moises Contreras
  • Patent number: 11397026
    Abstract: A burner system for gas-fired furnaces that includes a burner box having one or more burner heads. The burner box is linked to one or more heat exchanger tubes. A flame suppression tube extends from each of the one or more burner heads. The flame suppression tube extends in the direction of one of the one or more heat exchanger tubes. A space separates the flame suppression tube from the heat exchanger tube. A blower is configured to provide a mixture of flammable gas and air to the burner box. An air delivery means provides air in the space separating the flame suppression tube from the heat exchanger tube.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 26, 2022
    Assignee: Robertshaw Controls Company
    Inventor: Ian Rodgers
  • Patent number: 11359854
    Abstract: An air damper is provided. The air damper includes a base plate having a plurality of plate openings defining an area for the passage of air through the air damper. The slide is slideable over the base plate. The air damper also includes a slide having a plurality of slide openings and a plurality of slide closures. The air damper further includes a stepper motor coupled to the slide to move the slide in linear steps to change the area for the passage of air.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: June 14, 2022
    Assignee: Robertshaw Controls Company
    Inventors: Kyle William Svejcar, Thomas J. Davern
  • Publication number: 20220148831
    Abstract: An infinite switch includes a front cover, a back cover, and a base secured between the front cover and the back cover. A floating shaft extending through the front cover and the base. A cam fixed to the base and slidingly receiving an end of the floating shaft. The floating shaft is moveable in an axial direction extending parallel to a longitudinal axis of the floating shaft and the cam is fixed to prevent movement in the axial direction.
    Type: Application
    Filed: October 25, 2021
    Publication date: May 12, 2022
    Applicant: Robertshaw Controls Company
    Inventors: Gustavo Alonso Canales Benavides, Ruben Simon Romero, Javier Tomas Aguilar Fernández
  • Patent number: 11300223
    Abstract: A valve is disclosed a valving member positioned in an internal valving cavity and operable to control a flow of water therethrough. The valving member includes a diaphragm and an insert. A passageway through the diaphragm communicates with a bleed slot, preferably a tapered bleed slot, and a scallop of the insert. The scallop cooperates with the diaphragm to form a bleed holes when the valving member is in a closed position. The diaphragm and the insert at least partially separate when the valving member is opened to expose the bleed slot and scallop. The diaphragm rolls up to contact the insert when the valving member is closed to create a wiping action to flush any trapped debris from the bleed slot.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 12, 2022
    Assignee: Robertshaw Controls Company
    Inventors: James E. Pearson, Paul Charles Berkley, Shane Duncan Bartow, Kenneth A. Bergbauer
  • Patent number: 11255450
    Abstract: Embodiments of a multi-port multi-plane valve are provided. The multi-port multi-plane valve includes a housing which defines an internal cavity. The housing further includes a plurality of ports in which each port lies within one of two planes that are normal to each other. Each of the plurality of ports is in communication with the internal cavity. A shell body is rotatably disposed within the internal cavity and provides selectable fluid communications between the ports. A seal member is also provided which has a plurality of openings and surrounds the shell body. At least one flow enhancer channel may be included to reduce the pressure drop occurring on one side of the valve when controlling flow paths on the other side of the valve.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 22, 2022
    Assignee: Robertshaw Controls Company
    Inventors: Joseph Ledvora, Thomas J. Davern, James E. Pearson
  • Publication number: 20220010884
    Abstract: Embodiments of a multi-port multi-plane valve are provided. The multi-port multi-plane valve includes a housing which defines an internal cavity. The housing further includes a plurality of ports in which each port lies within one of two planes that are normal to each other. Each of the plurality of ports is in communication with the internal cavity. A shell body is rotatably disposed within the internal cavity and provides selectable fluid communications between the ports. A seal member is also provided which has a plurality of openings and surrounds the shell body. At least one flow enhancer channel may be included to reduce the pressure drop occurring on one side of the valve when controlling flow paths on the other side of the valve.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Applicant: Robertshaw Controls Company
    Inventors: Joseph Ledvora, Thomas J. Davern, James E. Pearson
  • Patent number: 11156300
    Abstract: A multi-port valve having a partial circumferential seal is provided. The valve includes a shell body and a seal member contained within a housing. The seal member is constructed such that it does not completely circumscribe the shell body.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: October 26, 2021
    Assignee: Robertshaw Controls Company
    Inventors: Andrzej Bunda, Thomas J. Davern
  • Patent number: 11143325
    Abstract: A bimetal valve has a valve seat movable intermediate a closed and open configuration relative to a port. An arm is connected to the valve seat having at least a bimetal portion. An electric heater selectively applies heat to the bimetal portion to transition the valve from closed to open, with many embodiments being biased in the closed configuration. A built-in fuse is provided in series with the heater between first and second electrical connections providing an electric supply to the electric heater.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: October 12, 2021
    Assignee: Robertshaw Controls Company
    Inventors: Matthew J. Van Fossen, Douglas C. Lanz
  • Patent number: 11112025
    Abstract: A water valve, guide tube for a water valve, and associated method are provided. The water valve includes a housing and the guide tube is installed on the housing via laser welding. The guide tube and housing each provide axially facing mating surfaces which abut one another in a pre-bonded configuration. In a post-bonded configuration, a laser weld joint is formed at the interface between the mating surfaces. The joint forms a portion of an outer periphery of the housing.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: September 7, 2021
    Assignee: Robertshaw Controls Company
    Inventors: Shane Duncan Bartow, Paul Charles Berkley, James E. Pearson
  • Patent number: 11067184
    Abstract: Provided herein are embodiments of a refrigerator valve and method of routing water through a refrigerator with the valve. The valve includes three valve bodies that route water in a refrigerator to different features. The middle valve body is higher than the two outer valve bodies, allowing the solenoid actuators to be mounted in a space-saving manner. The three valve bodies are linked by a central core pin that can be continuous or discontinuous such that the central core pin can provide fluid communication between all three valve bodies or divide the valve into two separate but linked valves. In a valve with a discontinuous central core pin, one valve body is isolated from the other two valve bodies so as to provide a redundant shutoff and allow a filter of a filtration unit to be replaced without having to shut off the water being supplied to the refrigerator.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: July 20, 2021
    Assignee: Robertshaw Controls Company
    Inventors: Jay P. Griswold, Todd D. Tiefenbach
  • Patent number: 11047501
    Abstract: Embodiments of a normally open gas valve are disclosed herein. The normally open gas valve includes a valve plug that gradually or partially disengages from the valve seat such that the actuation power required to open the valve is substantially reduced. The force required to open or close the valve is also reduced through the use of an off-center lever arm that multiplies the force applied by the armature of the actuation means. In this way, a less expensive actuation means, e.g., a less expensive solenoid, is able to be used to actuate the normally open gas valve.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: June 29, 2021
    Assignee: Robertshaw Controls Company
    Inventors: Tony Leeseberg, Stephen Sapp, Curtis Phillips, James E. Pearson
  • Publication number: 20210172533
    Abstract: Embodiments of a valve having a housing including an inlet, an outlet, and an interior chamber in fluid communication with the inlet and the outlet are disclosed. The valve also includes a seat fitting having a first screen held in place by a first retainer ring. The seat fitting includes a valve seat. The valve further includes an outlet fitting having a second screen held in place by a second retainer ring. The second retainer ring includes a plurality of ribs extending from a ring body such that the plurality of ribs create a gap between the ring body and the second screen. Further, the valve includes a valve plug configured to selectively engage the valve seat to open and close a passage between the interior chamber and the outlet. The seat fitting is contained at least partially within the outlet fitting to define the outlet of the housing.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 10, 2021
    Applicant: Robertshaw Controls Company
    Inventors: Ian Rodgers, Tony Leeseberg, James E. Pearson
  • Publication number: 20210123632
    Abstract: A burner system for gas-fired furnaces that includes a burner box having one or more burner heads. The burner box is linked to one or more heat exchanger tubes. A flame suppression tube extends from each of the one or more burner heads. The flame suppression tube extends in the direction of one of the one or more heat exchanger tubes. A space separates the flame suppression tube from the heat exchanger tube. A blower is configured to provide a mixture of flammable gas and air to the burner box. An air delivery means provides air in the space separating the flame suppression tube from the heat exchanger tube.
    Type: Application
    Filed: October 29, 2019
    Publication date: April 29, 2021
    Applicant: Robertshaw Controls Company
    Inventor: Ian Rodgers
  • Publication number: 20210018172
    Abstract: Provided are embodiments of a gas valve for an intermittent pilot ignition system. The gas valve includes features designed to address the buildup of negative pressure in a fuel line connected to the gas valve that could cause internal valve diaphragms to open, drawing fuel from the gas valve. In embodiments, the gas valve includes a system of check valves designed to seal off the gas valve when a negative pressure develops. In other embodiments, the gas valve includes a relief valve having a relief port so that air is able to enter the valve proximate to the inlet port so as to avoid building a negative pressure sufficient to open the diaphragms. In both cases, the valve remains primed with fuel for subsequent ignition. The gas valve is envisioned to be useful for a variety of pilot operated systems.
    Type: Application
    Filed: July 17, 2020
    Publication date: January 21, 2021
    Applicant: Robertshaw Controls Company
    Inventors: James E. Pearson, Stephen Sapp, Tony Leeseberg, Brandon Cole, Moises Contreras
  • Patent number: 10890326
    Abstract: A method for detecting a flame is provided. The method includes the step of providing alternating current to a flame rectification probe to produce a first voltage as an input for a sense circuit, wherein the flame rectification probe is placed in proximity to the flame. The method further includes the step of conditioning the first voltage using the sense circuit to produce a second voltage. Additionally, the method includes the steps of outputting the second voltage to a microcontroller, and determining with the microcontroller whether the flame is present based on a magnitude of the second voltage.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: January 12, 2021
    Assignee: Robertshaw Controls Company
    Inventors: Daniel Zuzuly, Michael Pietraszak
  • Publication number: 20200408455
    Abstract: An air damper is provided. The air damper includes a base plate having a plurality of plate openings defining an area for the passage of air through the air damper. The slide is slideable over the base plate. The air damper also includes a slide having a plurality of slide openings and a plurality of slide closures. The air damper further includes a stepper motor coupled to the slide to move the slide in linear steps to change the area for the passage of air.
    Type: Application
    Filed: June 27, 2019
    Publication date: December 31, 2020
    Applicant: Robertshaw Controls Company
    Inventors: Kyle William Svejcar, Thomas J. Davern
  • Publication number: 20200200284
    Abstract: Embodiments of a multi-port multi-plane valve are provided. The multi-port multi-plane valve includes a housing which defines an internal cavity. The housing further includes a plurality of ports in which each port lies within one of two planes that are normal to each other. Each of the plurality of ports is in communication with the internal cavity. A shell body is rotatably disposed within the internal cavity and provides selectable fluid communications between the ports. A seal member is also provided which has a plurality of openings and surrounds the shell body. At least one flow enhancer channel may be included to reduce the pressure drop occurring on one side of the valve when controlling flow paths on the other side of the valve.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Applicant: Robertshaw Controls Company
    Inventors: Joseph Ledvora, Thomas J. Davern, James E. Pearson
  • Publication number: 20200182370
    Abstract: A valve is disclosed a valving member positioned in an internal valving cavity and operable to control a flow of water therethrough. The valving member includes a diaphragm and an insert. A passageway through the diaphragm communicates with a bleed slot, preferably a tapered bleed slot, and a scallop of the insert. The scallop cooperates with the diaphragm to form a bleed holes when the valving member is in a closed position. The diaphragm and the insert at least partially separate when the valving member is opened to expose the bleed slot and scallop. The diaphragm rolls up to contact the insert when the valving member is closed to create a wiping action to flush any trapped debris from the bleed slot.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 11, 2020
    Applicant: Robertshaw Controls Company
    Inventors: James E. Pearson, Paul Charles Berkley, Shane Duncan Bartow, Kenneth A. Bergbauer