Patents by Inventor Aaron C. Bradford
Aaron C. Bradford 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: 11460083Abstract: A brake actuator with a pushrod configured to actuate a brake of a vehicle. The pushrod is movable between a retracted position and an extended position to actuate the brake. A brake actuator component is operatively coupled to the pushrod. A sensor is configured to emit a signal directed toward the brake actuator component and to receive the signal after the signal bounces off the brake actuator component and is reflected back to the sensor. A disc brake with a disc brake component and a sensor configured to emit a signal directed toward the disc brake component. The sensor is configured to receive the signal after the signal bounces off the disc brake component and is reflected back to the sensor. The sensor may be an acoustic sensor.Type: GrantFiled: February 3, 2020Date of Patent: October 4, 2022Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Aaron C. Bradford, Robert L. Koelzer
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Patent number: 11338786Abstract: A brake actuator assembly including a pressure plate presenting an opening, a push rod that is coupled to the pressure plate, a diaphragm that is coupled to the pressure plate, and a retainer that engages the push rod. The push rod has an outer surface and at least one protrusion extending outward from the outer surface. The retainer engages the protrusion such that at least a portion of the diaphragm is positioned between the pressure plate and the retainer.Type: GrantFiled: January 5, 2021Date of Patent: May 24, 2022Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Robert L. Koelzer, Albert D. Fisher, Aaron C. Bradford, David C. Rhoads, Michael R. Jenkins
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Publication number: 20210239172Abstract: A brake actuator with a pushrod configured to actuate a brake of a vehicle. The pushrod is movable between a retracted position and an extended position to actuate the brake. A brake actuator component is operatively coupled to the pushrod. A sensor is configured to emit a signal directed toward the brake actuator component and to receive the signal after the signal bounces off the brake actuator component and is reflected back to the sensor. A disc brake with a disc brake component and a sensor configured to emit a signal directed toward the disc brake component. The sensor is configured to receive the signal after the signal bounces off the disc brake component and is reflected back to the sensor. The sensor may be an acoustic sensor.Type: ApplicationFiled: February 3, 2020Publication date: August 5, 2021Inventors: AARON C. BRADFORD, ROBERT L. KOELZER
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Publication number: 20210122352Abstract: A brake actuator assembly including a pressure plate presenting an opening, a push rod that is coupled to the pressure plate, a diaphragm that is coupled to the pressure plate, and a retainer that engages the push rod. The push rod has an outer surface and at least one protrusion extending outward from the outer surface. The retainer engages the protrusion such that at least a portion of the diaphragm is positioned between the pressure plate and the retainer.Type: ApplicationFiled: January 5, 2021Publication date: April 29, 2021Inventors: ROBERT L. KOELZER, ALBERT D. FISHER, AARON C. BRADFORD, DAVID C. RHOADS, MICHAEL R. JENKINS
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Patent number: 10889280Abstract: A brake actuator assembly including a pressure plate presenting an opening, a push rod that is coupled to the pressure plate, a diaphragm that is coupled to the pressure plate, and a retainer that engages the push rod. The push rod has an outer surface and at least one protrusion extending outward from the outer surface. The retainer engages the protrusion such that at least a portion of the diaphragm is positioned between the pressure plate and the retainer.Type: GrantFiled: May 20, 2016Date of Patent: January 12, 2021Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Robert L. Koelzer, Albert D. Fisher, Aaron C. Bradford, David C. Rhoads, Michael R. Jenkins
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Patent number: 10493972Abstract: A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.Type: GrantFiled: June 6, 2017Date of Patent: December 3, 2019Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Albert D. Fisher, Aaron C. Bradford
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Patent number: 10391997Abstract: A pneumatic brake actuator has a housing and a divider that divides the housing into a spring chamber containing a spring and a pressure chamber. The divider has an opening that receives an end of an actuator tube. A bearing that is positioned within the opening in the divider is joined to both the divider and the actuator tube. A caging bolt has a first end positioned within the actuator tube and extends from the first end through openings in the bearing and housing to a second end positioned outside of the housing. The connection between the bearing, divider and actuator tube contains the spring within the housing in the event that the housing and/or divider fails. The divider can be a piston or a diaphragm and pressure plate. The bearing can be joined to either of the divider and actuator tube with threads and/or by welding.Type: GrantFiled: May 24, 2017Date of Patent: August 27, 2019Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Aaron C. Bradford, Albert D. Fisher
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Publication number: 20190176793Abstract: A brake actuator assembly including a pressure plate presenting an opening, a push rod that is coupled to the pressure plate, a diaphragm that is coupled to the pressure plate, and a retainer that engages the push rod. The push rod has an outer surface and at least one protrusion extending outward from the outer surface. The retainer engages the protrusion such that at least a portion of the diaphragm is positioned between the pressure plate and the retainer.Type: ApplicationFiled: May 20, 2016Publication date: June 13, 2019Inventors: ROBERT L. KOELZER, ALBERT D. FISHER, AARON C. BRADFORD, DAVID C. RHOADS, MICHAEL R. JENKINS
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Publication number: 20170274887Abstract: A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.Type: ApplicationFiled: June 6, 2017Publication date: September 28, 2017Applicant: HALDEX BRAKE PRODUCTS CORPORATIONInventors: ALBERT D. FISHER, AARON C. BRADFORD
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Publication number: 20170253227Abstract: A pneumatic brake actuator has a housing and a divider that divides the housing into a spring chamber containing a spring and a pressure chamber. The divider has an opening that receives an end of an actuator tube. A bearing that is positioned within the opening in the divider is joined to both the divider and the actuator tube. A caging bolt has a first end positioned within the actuator tube and extends from the first end through openings in the bearing and housing to a second end positioned outside of the housing. The connection between the bearing, divider and actuator tube contains the spring within the housing in the event that the housing and/or divider fails. The divider can be a piston or a diaphragm and pressure plate. The bearing can be joined to either of the divider and actuator tube with threads and/or by welding.Type: ApplicationFiled: May 24, 2017Publication date: September 7, 2017Applicant: Haldex Brake Products CorporationInventors: AARON C. BRADFORD, ALBERT D. FISHER
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Patent number: 9701297Abstract: A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.Type: GrantFiled: February 5, 2015Date of Patent: July 11, 2017Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Albert D. Fisher, Aaron C. Bradford
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Patent number: 9688261Abstract: A pneumatic brake actuator has a housing and a divider that divides the housing into a spring chamber containing a spring and a pressure chamber. The divider has an opening that receives an end of an actuator tube. A bearing that is positioned within the opening in the divider is joined to both the divider and the actuator tube. A caging bolt has a first end positioned within the actuator tube and extends from the first end through openings in the hearing and housing to a second end positioned outside of the housing. The connection between the bearing, divider and actuator tube contains the spring within the housing in the event that the housing and/or divider fails. The divider can be a piston or a diaphragm and pressure plate. The bearing can be joined to either of the divider and actuator tube with threads and/or by welding.Type: GrantFiled: March 16, 2012Date of Patent: June 27, 2017Assignee: HALDEX BRAKE PRODUCTS CORPORATIONInventors: Aaron C. Bradford, Albert D. Fisher
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Patent number: 9073527Abstract: A sealing assembly and method of manufacturing a sealing assembly for a spring brake actuator having a dynamic center seal for sealing a first surface to a second surface. The sealing assembly has dynamic sealing elements that seal in a smooth hole or bore, where the sealing element or element stack is retained in the hole or bore on each end by a bearing for the center pushrod or center tube.Type: GrantFiled: March 31, 2011Date of Patent: July 7, 2015Assignee: HALDEX BRAKE CORPORATIONInventor: Aaron C. Bradford
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Publication number: 20150144440Abstract: A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.Type: ApplicationFiled: February 5, 2015Publication date: May 28, 2015Applicant: HALDEX BRAKE PRODUCTS CORPORATIONInventors: ALBERT D. FISHER, Aaron C. Bradford
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Patent number: 8978839Abstract: A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.Type: GrantFiled: May 7, 2012Date of Patent: March 17, 2015Assignee: Haldex Brake Products CorporationInventors: Aaron C. Bradford, Albert D. Fisher
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Publication number: 20130292216Abstract: A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.Type: ApplicationFiled: May 7, 2012Publication date: November 7, 2013Inventors: Aaron C. Bradford, Albert D. Fisher
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Publication number: 20130239799Abstract: A pneumatic brake actuator has a housing and a divider that divides the housing into a spring chamber containing a spring and a pressure chamber. The divider has an opening that receives an end of an actuator tube. A bearing that is positioned within the opening in the divider is joined to both the divider and the actuator tube. A caging bolt has a first end positioned within the actuator tube and extends from the first end through openings in the hearing and housing to a second end positioned outside of the housing. The connection between the bearing, divider and actuator tube contains the spring within the housing in the event that the housing and/or divider fails. The divider can be a piston or a diaphragm and pressure plate. The bearing can be joined to either of the divider and actuator tube with threads and/or by welding.Type: ApplicationFiled: March 16, 2012Publication date: September 19, 2013Inventors: Aaron C. Bradford, Albert D. Fisher
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Publication number: 20120247880Abstract: A sealing assembly and method of manufacturing a sealing assembly for a spring brake actuator having a dynamic center seal for sealing a first surface to a second surface. The sealing assembly has dynamic sealing elements that seal in a smooth hole or bore, where the sealing element or element stack is retained in the hole or bore on each end by a bearing for the center pushrod or center tube.Type: ApplicationFiled: March 31, 2011Publication date: October 4, 2012Inventor: Aaron C. Bradford