Patents by Inventor Jason J. Raasch
Jason J. Raasch 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: 20220275963Abstract: A flow control device for controlling flow in a heating, ventilation, or air conditioning (HVAC) system is shown. The flow control device includes a valve body including an inlet path, an outlet path, a valve member, and a valve stem coupled to the valve member. The flow control device includes a first sensor configured to obtain pressure measurements within the valve body, a second sensor configured to obtain displacement measurements of the valve stem, and a controller including a processing circuit configured to determine a flowrate based at least on the pressure measurements from the first sensor and the displacement measurements from the second sensor.Type: ApplicationFiled: February 26, 2021Publication date: September 1, 2022Applicant: Johnson Controls Technology CompanyInventors: Jason J. Raasch, Christopher Brophy, Kevin A. Weiss, Duane S. Freimuth
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Patent number: 10870135Abstract: A pressure washer includes a pump for pressurizing a primary fluid flow, the pump including a pump inlet for receiving fluid from a common fluid source and a pump outlet for supplying a pressurized primary fluid and a jet pump including a primary fluid inlet fluidly coupled to the pump outlet, a secondary fluid inlet configured to receive fluid from the common fluid source, and a fluid outlet. In a high pressure operating mode, all of the pressurized primary fluid flows through the jet pump and exits through the fluid outlet of the jet pump. In a high flow operating mode, all the pressurized primary fluid flows through the jet pump and entrains a secondary fluid supplied through the secondary fluid inlet from the common fluid source so that the secondary fluid also flows through the jet pump, resulting in a combined fluid flow of the primary fluid and the secondary fluid that exits through the fluid outlet of the jet pump.Type: GrantFiled: December 2, 2015Date of Patent: December 22, 2020Assignee: Briggs & Stratton, LLCInventors: Jason J. Raasch, Joseph Giacalone
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Patent number: 10654054Abstract: A pressure washer includes a prime mover, a water pump, the water pump including a pump inlet for receiving fluid from a fluid source and a pump outlet for supplying a pressurized primary fluid, a jet pump including a primary fluid inlet fluidly coupled to the pump outlet, a secondary fluid inlet, and a fluid outlet, and a spray gun configured to be fluidly coupled to the fluid outlet of the jet pump, the spray gun including a spray gun outlet having a variable effective flow area. Wherein, in operation, in a high pressure operating mode, the pressurized primary fluid flows through the jet pump and exits through the fluid outlet of the jet pump, and in a high flow operating mode, the pressurized primary fluid flows through the jet pump and entrains a secondary fluid supplied through the secondary fluid inlet, resulting in a combined fluid flow.Type: GrantFiled: May 9, 2014Date of Patent: May 19, 2020Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Patent number: 10392761Abstract: A snowthrower includes a body, a chute rotatable relative to the body among multiple chute positions, wherein the chute is configured to discharge snow from the snowthrower, a motor for rotating the chute, a user input device, and an electronic control unit configured to control the motor to automatically rotate the chute from a first chute position on a first side of a zero degree chute position aligned with the forward direction of travel of the snowthrower to a second chute position on a second side of the zero degree chute position upon actuation of the user input device.Type: GrantFiled: November 9, 2016Date of Patent: August 27, 2019Assignee: Briggs & Stratton CorporationInventors: Jason J. Raasch, Robert Koenen, Dan Brueck
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Publication number: 20170361357Abstract: A pressure washer includes a pump for pressurizing a primary fluid flow, the pump including a pump inlet for receiving fluid from a common fluid source and a pump outlet for supplying a pressurized primary fluid and a jet pump including a primary fluid inlet fluidly coupled to the pump outlet, a secondary fluid inlet configured to receive fluid from the common fluid source, and a fluid outlet. In a high pressure operating mode, all of the pressurized primary fluid flows through the jet pump and exits through the fluid outlet of the jet pump. In a high flow operating mode, all the pressurized primary fluid flows through the jet pump and entrains a secondary fluid supplied through the secondary fluid inlet from the common fluid source so that the secondary fluid also flows through the jet pump, resulting in a combined fluid flow of the primary fluid and the secondary fluid that exits through the fluid outlet of the jet pump.Type: ApplicationFiled: December 2, 2015Publication date: December 21, 2017Applicant: Briggs & Stratton CorporationInventors: Jason J. Raasch, Joseph Giacalone
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Patent number: 9628009Abstract: A generator having an electronic governor for controlling the speed of an engine to generate an output voltage from an alternator is disclosed. The generator includes an alternator coupled to an engine to generate an output voltage. The variable speed of the engine allows the alternator to generate a variable output voltage. An electronic governor monitors a time period between voltage benchmarks on the output voltage. The electronic governor compares the monitored time period to a reference time period and adjusts the position of the throttle based upon the comparison between the monitored time period and the reference time period. The reference time period is set based upon the desired output voltage frequency. In an alternate embodiment, the electronic governor senses the current draw from the alternator and adjusts the position of the throttle to prevent changes in the frequency of the output voltage.Type: GrantFiled: October 25, 2012Date of Patent: April 18, 2017Assignee: Briggs & Stratton CorporationInventors: Robert J. Koenen, Jason J. Raasch
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Patent number: 9605572Abstract: A muffler for exhaust gases of a combustion engine includes walls forming a chamber through which the exhaust gases pass, a first inlet in the walls of the chamber configured to receive the exhaust gases from an exhaust duct of the engine, a first outlet in the walls of the chamber through which the exhaust gases exit the chamber, and a conduit having a second inlet and a second outlet, wherein a substantial length of the conduit is positioned within the chamber.Type: GrantFiled: June 17, 2013Date of Patent: March 28, 2017Assignee: Briggs & Stratton CorporationInventors: Jason J. Raasch, Gary J. Gracyalny
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Patent number: 9598828Abstract: A carburetor includes a passageway having a constricted section, a nozzle directed into the passageway proximate the constricted section, and a shaft having a surface that at least partially defines the constricted section. The nozzle is configured to deliver fuel to air passing through the passageway, and the surface includes a contour that is configured to be moved relative to the passageway to change the area of the passageway through the constricted section.Type: GrantFiled: December 12, 2014Date of Patent: March 21, 2017Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Publication number: 20170058471Abstract: A snowthrower includes a body, a chute rotatable relative to the body among multiple chute positions, wherein the chute is configured to discharge snow from the snowthrower, a motor for rotating the chute, a user input device, and an electronic control unit configured to control the motor to automatically rotate the chute from a first chute position on a first side of a zero degree chute position aligned with the forward direction of travel of the snowthrower to a second chute position on a second side of the zero degree chute position upon actuation of the user input device.Type: ApplicationFiled: November 9, 2016Publication date: March 2, 2017Applicant: Briggs & Stratton CorporationInventors: Jason J. Raasch, Robert Koenen, Dan Brueck
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Patent number: 9493920Abstract: A snowthrower includes a body, a chute rotatable relative to the body among a plurality of chute positions, wherein the chute is configured to discharge snow from the snowthrower, a motor for rotating the chute, a user input device configured to set a preferred chute bearing, and an electronic control unit configured to control the motor to automatically rotate the chute to an appropriate chute position to maintain the chute at the preferred chute bearing without additional input from the user input device.Type: GrantFiled: January 23, 2015Date of Patent: November 15, 2016Assignee: Briggs & Stratton CorporationInventors: Jason J. Raasch, Robert Koenen, Dan Brueck
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Patent number: 9316175Abstract: An engine includes a carburetor including a variable venturi having a fixed surface and an adjustable surface that form a constricted section, a throttle valve downstream of the variable venturi, a governor assembly including a governor configured to detect an engine speed of the engine, a governor arm coupled to the governor, the venturi, and the throttle valve, and a governor spring coupled to the governor arm to bias the throttle valve towards the fully open position, and a vacuum actuator including an actuator linkage coupled to the governor spring and also coupled to a pressure-sensitive member for movement with the pressure-sensitive member in response to an engine vacuum, and an actuator spring biasing the actuator linkage to increase the tension on the governor spring.Type: GrantFiled: June 20, 2013Date of Patent: April 19, 2016Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Patent number: 9150212Abstract: An engine includes a throttle, a drive shaft, a driven shaft, a continuously variable transmission coupling the drive and driven shafts and providing a mechanical advantage therebetween, and a governor that operates the throttle as a function of rotational speed of the driven shaft. The transmission includes a first wheel coupled to the drive shaft, a second wheel coupled to the driven shaft, and a belt coupling the first and second wheels, wherein a working diameter of the second wheel changes as a function of torque acting on the driven shaft, thereby automatically changing the mechanical advantage in response to torque experienced by the driven shaft, and wherein a working diameter of the first wheel changes a function of tension in the belt.Type: GrantFiled: April 25, 2014Date of Patent: October 6, 2015Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Patent number: 9051927Abstract: A water pump includes a base, a cam, a joint, and a piston. The base includes a PTO-attachment portion, a cam-attachment portion, a first contact surface, and a second contact surface. The cam includes a central opening, a first cam contact surface, and a second cam contact surface, wherein the cam-attachment portion of the base extends into the central opening. The joint pivotally couples the cam to the cam-attachment portion of the base. In a first operating position of the cam, the first contact surface engages the first cam contact surface so that the cam is positioned at a first angle relative to the axis of PTO rotation. In a second operating position of the cam, the second contact surface engages the second cam contact surface so that the cam is positioned at a second angle, greater than the first angle, relative to the axis of PTO rotation.Type: GrantFiled: June 14, 2012Date of Patent: June 9, 2015Assignee: BRIGGS & STRATTON CORPORATIONInventors: Richard J. Gilpatrick, Jason J. Raasch, Gary Gracyalny
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Publication number: 20150128459Abstract: A snowthrower includes a body, a chute rotatable relative to the body among a plurality of chute positions, wherein the chute is configured to discharge snow from the snowthrower, a motor for rotating the chute, a user input device configured to set a preferred chute bearing, and an electronic control unit configured to control the motor to automatically rotate the chute to an appropriate chute position to maintain the chute at the preferred chute bearing without additional input from the user input device.Type: ApplicationFiled: January 23, 2015Publication date: May 14, 2015Applicant: BRIGGS & STRATTON CORPORATIONInventors: Jason J. Raasch, Robert Koenen, Dan Brueck
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Publication number: 20150096206Abstract: A carburetor includes a passageway having a constricted section, a nozzle directed into the passageway proximate the constricted section, and a shaft having a surface that at least partially defines the constricted section. The nozzle is configured to deliver fuel to air passing through the passageway, and the surface includes a contour that is configured to be moved relative to the passageway to change the area of the passageway through the constricted section.Type: ApplicationFiled: December 12, 2014Publication date: April 9, 2015Applicant: BRIGGS & STRATTON CORPORATIONInventor: Jason J. Raasch
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Patent number: 8938894Abstract: A snowthrower includes a body, a chute rotatable relative to the body among multiple chute positions, wherein the chute is configured to discharge snow from the snowthrower, a motor for rotating the chute, a chute position detector configured to detect a current chute position, a compass sensor configured to detect a snowthrower bearing, and an electronic control unit configured to, in a compass guidance operating mode, control the motor to move the chute to an appropriate chute position to maintain the chute at a preferred chute bearing in response to a comparison of the snowthrower bearing detected by the compass sensor and the current chute position detected by the chute position detector.Type: GrantFiled: January 10, 2013Date of Patent: January 27, 2015Assignee: Briggs & Stratton CorporationInventors: Jason J. Raasch, Robert Koenen, Dan Brueck
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Patent number: 8915231Abstract: An engine includes a carburetor, a governor assembly, and a vacuum actuator. The carburetor includes a throttle plate configured to control a fluid flow, a throttle lever coupled to the throttle plate, and an intake port in fluid communication with an engine vacuum pressure. The governor assembly includes a governor, a governor linkage coupled to the governor and the throttle lever, and a governor spring coupled to the throttle lever to bias the throttle plate towards the fully open position. The vacuum actuator includes an actuator housing, a pressure-sensitive member positioned in the actuator housing, an actuator linkage directly coupled to the governor spring and also coupled to the pressure-sensitive member for movement in response to the engine vacuum pressure, and an actuator spring coupled between a fixed attachment point and the actuator linkage to bias the actuator linkage to increase the tension on the governor spring.Type: GrantFiled: June 8, 2012Date of Patent: December 23, 2014Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Patent number: 8910616Abstract: A carburetor includes a passageway having a constricted section, a nozzle directed into the passageway proximate the constricted section, and a shaft having a surface that at least partially defines the constricted section. The nozzle is configured to deliver fuel to air passing through the passageway, and the surface includes a contour that is configured to be moved relative to the passageway to change the area of the passageway through the constricted section.Type: GrantFiled: April 21, 2011Date of Patent: December 16, 2014Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Patent number: 8845486Abstract: Outdoor power equipment includes an engine having a throttle and a drive shaft, a driven shaft, a tool coupled to the driven shaft. The engine further includes a transmission coupling the drive and driven shafts and providing a mechanical advantage therebetween. The transmission automatically changes the mechanical advantage in response to torque experienced by the driven shaft.Type: GrantFiled: June 3, 2011Date of Patent: September 30, 2014Assignee: Briggs & Stratton CorporationInventor: Jason J. Raasch
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Publication number: 20140246517Abstract: A pressure washer includes a prime mover, a water pump, the water pump including a pump inlet for receiving fluid from a fluid source and a pump outlet for supplying a pressurized primary fluid, a jet pump including a primary fluid inlet fluidly coupled to the pump outlet, a secondary fluid inlet, and a fluid outlet, and a spray gun configured to be fluidly coupled to the fluid outlet of the jet pump, the spray gun including a spray gun outlet having a variable effective flow area. Wherein, in operation, in a high pressure operating mode, the pressurized primary fluid flows through the jet pump and exits through the fluid outlet of the jet pump, and in a high flow operating mode, the pressurized primary fluid flows through the jet pump and entrains a secondary fluid supplied through the secondary fluid inlet, resulting in a combined fluid flow.Type: ApplicationFiled: May 9, 2014Publication date: September 4, 2014Applicant: Briggs & Stratton CorporationInventor: Jason J. Raasch