Patents Assigned to Griswold Controls
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Publication number: 20240068589Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The valve maybe controlled through a control system based upon measured pressures or temperatures in a system supplied or controlled by the valve. The valve may be operated as a pressure independent control valve, using pressure measurement from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system, which is operable to maintain a constant pressure drop across the system, or the valve may be operated as a temperature independent control valve, using temperature measurements from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system which is operable to maintain a constant temperature drop across the system.Type: ApplicationFiled: August 24, 2022Publication date: February 29, 2024Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20240009782Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 11772211Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: GrantFiled: June 2, 2022Date of Patent: October 3, 2023Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20220290772Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: ApplicationFiled: June 2, 2022Publication date: September 15, 2022Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 11359738Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: GrantFiled: October 29, 2018Date of Patent: June 14, 2022Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 10794511Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The valve maybe controlled through a control system based o{circumflex over (?)}pn measured pressures or temperatures in a system supplied or controlled by the valve. The valve may be operated as a pressure independent control valve, using pressure measurement from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system, which is operable to maintain a constant pressure drop across the system, or the valve may be operated as a temperature independent control valve, using temperature measurements from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system which is operable to maintain a constant temperature drop across the system.Type: GrantFiled: June 18, 2019Date of Patent: October 6, 2020Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 10527178Abstract: A rotationally adjustable valve is disclosed whereby the user is able to control the flow of fluids from complete shutoff to maximum flow by rotating the adjustment means of the valve, said rotation being axial to the flow of the fluid. Additionally, the user is able to attach high and low pressure test probes directly to the valve, as it is rotatably adjusted, so that additional equipment is not required next to the valve. An embodiment of this invention includes the use of an adjustable Cv disk to set the maximum flow of the valve, rather than just create a simple 180° on/off, very similar to a current 90° ball valve that this device will replace.Type: GrantFiled: September 11, 2018Date of Patent: January 7, 2020Assignee: Griswold Controls, LLCInventors: Stefan I. Tuineag, Bryan Holloway
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Publication number: 20190301631Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The valve maybe controlled through a control system based o{circumflex over (?)}pn measured pressures or temperatures in a system supplied or controlled by the valve. The valve may be operated as a pressure independent control valve, using pressure measurement from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system, which is operable to maintain a constant pressure drop across the system, or the valve may be operated as a temperature independent control valve, using temperature measurements from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system which is operable to maintain a constant temperature drop across the system.Type: ApplicationFiled: June 18, 2019Publication date: October 3, 2019Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 10323768Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The valve maybe controlled through a control system based on measured pressures or temperatures in a system supplied or controlled by the valve. The valve may be operated as a pressure independent control valve, using pressure measurement from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system, which is operable to maintain a constant pressure drop across the system, or the valve may be operated as a temperature independent control valve, using temperature measurements from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system which is operable to maintain a constant temperature drop across the system.Type: GrantFiled: June 8, 2017Date of Patent: June 18, 2019Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20190072190Abstract: A rotationally adjustable valve is disclosed whereby the user is able to control the flow of fluids from complete shutoff to maximum flow by rotating the adjustment means of the valve, said rotation being axial to the flow of the fluid. Additionally, the user is able to attach high and low pressure test probes directly to the valve, as it is rotatably adjusted, so that additional equipment is not required next to the valve. An embodiment of this invention includes the use of an adjustable Cv disk to set the maximum flow of the valve, rather than just create a simple 180° on/off, very similar to a current 90° ball valve that this device will replace.Type: ApplicationFiled: September 11, 2018Publication date: March 7, 2019Applicant: Griswold Controls, LLCInventors: Stefan I. Tuineag, Bryan Holloway
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Publication number: 20190063631Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: ApplicationFiled: October 29, 2018Publication date: February 28, 2019Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20180355997Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The valve maybe controlled through a control system based on measured pressures or temperatures in a system supplied or controlled by the valve. The valve may be operated as a pressure independent control valve, using pressure measurement from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system, which is operable to maintain a constant pressure drop across the system, or the valve may be operated as a temperature independent control valve, using temperature measurements from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system which is operable to maintain a constant temperature drop across the system.Type: ApplicationFiled: June 8, 2017Publication date: December 13, 2018Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 10113661Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: GrantFiled: August 30, 2016Date of Patent: October 30, 2018Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 10072761Abstract: A rotationally adjustable valve is disclosed whereby the user is able to control the flow of fluids from complete shutoff to maximum flow by rotating the adjustment means of the valve, said rotation being axial to the flow of the fluid. Additionally, the user is able to attach high and low pressure test probes directly to the valve, as it is rotatably adjusted, so that additional equipment is not required next to the valve. An embodiment of this invention includes the use of an adjustable Cv disk to set the maximum flow of the valve, rather than just create a simple 180° on/off, very similar to a current 90° ball valve that this device will replace.Type: GrantFiled: October 24, 2016Date of Patent: September 11, 2018Assignee: Griswold Controls, LLCInventors: Stefan I. Tuineag, Bryan Holloway
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Patent number: 10012324Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The pilot valve is controlled in part with relatively high pressure fluid ported from a high pressure port and relatively low pressure fluid ported from a low pressure port.Type: GrantFiled: January 9, 2017Date of Patent: July 3, 2018Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 9920850Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The pilot valve is controlled in part with relatively high pressure fluid ported from a high pressure port of a flow sensor and relatively low pressure fluid ported from a low pressure port of a flow sensor, and also controlled with a control fluid applied to a control plate acting on a compression spring to bias the pilot valve. The pressure in the control fluid is controlled by pressurizing a control fluid reservoir with a mechanism accessible from outside the valve and the piping in which the valve is installed. The flow sensor and the reservoir are preferably disposed within the flange of the valve.Type: GrantFiled: February 8, 2016Date of Patent: March 20, 2018Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20180058603Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.Type: ApplicationFiled: August 30, 2016Publication date: March 1, 2018Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Patent number: 9835257Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a Venturi nozzle for measuring flow through the valve, arranged in a straight configuration.Type: GrantFiled: March 10, 2016Date of Patent: December 5, 2017Assignee: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20170261110Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a Venturi nozzle for measuring flow through the valve, arranged in a straight configuration.Type: ApplicationFiled: March 10, 2016Publication date: September 14, 2017Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag
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Publication number: 20170227134Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The pilot valve is controlled in part with relatively high pressure fluid ported from a high pressure port of a flow sensor and relatively low pressure fluid ported from a low pressure port of a flow sensor, and also controlled with a control fluid applied to a control plate acting on a compression spring to bias the pilot valve. The pressure in the control fluid is controlled by pressurizing a control fluid reservoir with a mechanism accessible from outside the valve and the piping in which the valve is installed. The flow sensor and the reservoir are preferably disposed within the flange of the valve.Type: ApplicationFiled: February 8, 2016Publication date: August 10, 2017Applicant: Griswold Controls, LLCInventor: Stefan I. Tuineag