# US 9,039,102 B2 · Systems and methods for emergency braking system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,102 B2 - Document ID: US9039102B2 - Status: Granted - Kind: B2 - Application number: 13/228,328 - Filed: 2011-09-08 - Published: 2013-03-14 - Granted: 2015-05-26 - Earliest claimed: 2011-09-08 - Assignees: Goodrich Corporation - Applicants: Eric D. Cahill; Paul R. Burte - Inventors: Eric D. Cahill; Paul R. Burte - Web page: https://patentgrep.com/patent/US9039102B2 ## CPC - B60T 7/042: {by electrical means, e.g. using travel or force sensors} - B60T 7/12: for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} - B60T 8/00: Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force (by changing number of effective brake cylinders in power brake systems B60T17/10) - B60T 8/1703: {for aircrafts} - B60T 8/96: on speed responsive control means - B64C 25/426: {Braking devices providing an automatic sequence of braking} - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - B64C: AEROPLANES; HELICOPTERS ## Abstract Systems and methods disclosed herein may be useful emergency braking systems for use in, for example, an aircraft. A system is disclosed that allows emergency braking without the need for a manually operated emergency brake. For example, a system is provided comprising a potentiometer in mechanical communication with a brake pedal, a first electronic switch in electrical communication with the potentiometer, a second electronic switch indicating a displacement of the brake pedal, wherein a brake control valve opens in response to the first electronic switch, and wherein a shutoff valve opens in response to the second electronic switch. ## Claims ### Claim 1 A system comprising a potentiometer in mechanical communication with a brake pedal; a first electronic switch in electrical communication with the potentiometer; a second electronic switch configured to toggle in response to a displacement of the brake pedal; a first OR gate in electrical communication with the second electronic switch; and the first OR gate in electrical communication with a standard input, wherein the first OR gate is in electrical communication with a shutoff valve wherein a brake control valve opens in response to the first electronic switch, wherein the shutoff valve opens in response to the first OR gate and the standard input, wherein the shutoff valve controls the output of a hydraulic fluid to the brake control valve. ### Claim 2 (depends on 1) The system of claim 1, wherein the first electronic switch is a silicon controlled rectifier (“SCR”). ### Claim 3 (depends on 1) The system of claim 1, wherein the second electronic switch is at least one of an SCR and a Hall Effect-driven switch. ### Claim 4 (depends on 2) The system of claim 2, wherein the first electronic switch is controlled by a second OR gate. ### Claim 5 (depends on 4) The system of claim 4, wherein the second OR gate is controlled by the functioning of at least one of a first channel, a second channel, and a one shot. ### Claim 6 (depends on 5) The system of claim 5, wherein the second OR gate remains open in response to at least one of the first channel and the second channel being operational. ### Claim 7 (depends on 5) The system of claim 5, wherein the second OR gate closes in response to firing of the one shot. ### Claim 8 (depends on 1) The system of claim 1, further comprising a current sense to detect current in the electrical path between the first electronic switch and the brake control valve. ### Claim 9 (depends on 1) The system of claim 1, further comprising a diode for determining the maximum voltage output of the potentiometer. ### Claim 10 (depends on 1) The system of claim 1, further comprising a second OR gate controlling the first electronic switch, the second OR gate in electrical communication with a second brake pedal. ### Claim 11 A method comprising: receiving, at a potentiometer, a voltage in accordance with displacement of a brake pedal; opening a first electronic switch in response to an OR gate; toggling a second electronic switch in response to displacement of the brake pedal; receiving, at a brake control valve, a control signal through the first electronic switch; and receiving, at a shutoff valve, a control signal through a second OR gate, the second OR gate being in electrical communication with the second electronic switch, wherein the shutoff valve controls the output of a hydraulic fluid to the brake control valve. ### Claim 12 (depends on 11) The method of claim 11, further comprising exerting hydraulic pressure through the brake control valve to a brake actuator. ### Claim 13 (depends on 11) The method of claim 11, further comprising: closing the second electronic switch. ### Claim 14 (depends on 11) The method of claim 11, further comprising sensing current through the first electronic switch. ### Claim 15 A system comprising a potentiometer in electrical communication with a brake pedal; a first electronic switch in electrical communication with the potentiometer; a second electronic switch configured to toggle in response to a displacement of the brake pedal; a first OR gate in electrical communication with the second electronic switch; and the first OR gate in electrical communication with a standard input, wherein an electronic brake control actuator receives a braking command in response to the first electronic switch, and wherein the electronic brake control actuator commands braking in response to the OR gate. ### Claim 16 (depends on 15) The system of claim 15, wherein the first electronic switch is an SCR. ### Claim 17 (depends on 15) The system of claim 15, wherein the second electronic switch is at least one of an SCR and a Hall Effect-driven switch. ### Claim 18 (depends on 15) The system of claim 15, wherein the braking command is a low level braking command. ### Claim 19 (depends on 15) The system of claim 15, further comprising a current sense to detect current in the electrical path between the first electronic switch and the electronic brake control actuator. ### Claim 20 (depends on 15) The system of claim 15, wherein a second OR gate is controlled by the functioning of at least one of a first channel, a second channel, and a one shot.