Oct 7, 2025

US12434672 - Military vehicle

A brake system includes an air-to-hydraulic intensifier configured to couple to a brake actuator that engages a brake to limit movement of a tractive element where the air-to-hydraulic intensifier is configured to receive a supply of air and provide a hydraulic fluid to the brake actuator based on the supply of air to overcome a brake biasing force of the brake actuator to disengage the brake actuator from the brake to permit movement of the tractive element, a hydraulic reservoir coupled to the air-to-hydraulic intensifier, and a valve. The valve includes a first port fluidly coupled to the air-to-hydraulic intensifier, a second port fluidly coupled to the hydraulic reservoir, a third port fluidly coupled to the brake actuator, and a valve gate that is repositionable between a first position that couples the first port to the third port and a second position that couples the second port to the third port.

Assignee: OSHKOSH DEFENSE, LLC
Inventors: Don Verhoff, Gary Schmiedel, Chris Yakes, Rob Messina, Brian Wilkins, Kent Schulte, Daniel R. Seffernick, Joseph Holda, Michael Peotter, David McGraw, Anthony Seefeldt, Dave Pelko, Jesse Gander, Jerry Reineking, Jesse Steinke
Filing date: 2023-10-12

The patent describes a brake system for military vehicles that utilizes an air-to-hydraulic intensifier to control the engagement and disengagement of brakes, allowing for the movement of tractive elements. This system includes a hydraulic reservoir and a valve to manage the flow of hydraulic fluid, enhancing the vehicle’s braking capabilities.

Claim 1

A military vehicle comprising: a passenger capsule; and a brake system including: a brake housing defining an inner volume; a piston separating the inner volume into a first chamber and a second chamber; a rod extending through an end of the brake housing and coupled to the piston, the rod positioned to selectively engage with a brake to inhibit movement of a tractive element; a resilient member positioned within the inner volume and configured to generate a brake biasing force against the piston such that the rod is biased into engagement with the brake; an air-to-hydraulic intensifier coupled to the brake housing, the air-to-hydraulic intensifier configured to receive a supply of air and provide a hydraulic fluid to the brake housing based on the supply of air to overcome the brake biasing force to disengage the rod from the brake to permit movement of the tractive element; a hydraulic reservoir; and a valve positioned between the air-to-hydraulic intensifier, the brake housing, and the hydraulic reservoir. a passenger capsule; and a brake system including: a brake housing defining an inner volume; a piston separating the inner volume into a first chamber and a second chamber; a rod extending through an end of the brake housing and coupled to the piston, the rod positioned to selectively engage with a brake to inhibit movement of a tractive element; a resilient member positioned within the inner volume and configured to generate a brake biasing force against the piston such that the rod is biased into engagement with the brake; an air-to-hydraulic intensifier coupled to the brake housing, the air-to-hydraulic intensifier configured to receive a supply of air and provide a hydraulic fluid to the brake housing based on the supply of air to overcome the brake biasing force to disengage the rod from the brake to permit movement of the tractive element; a hydraulic reservoir; and a valve positioned between the air-to-hydraulic intensifier, the brake housing, and the hydraulic reservoir. a brake housing defining an inner volume; a piston separating the inner volume into a first chamber and a second chamber; a rod extending through an end of the brake housing and coupled to the piston, the rod positioned to selectively engage with a brake to inhibit movement of a tractive element; a resilient member positioned within the inner volume and configured to generate a brake biasing force against the piston such that the rod is biased into engagement with the brake; an air-to-hydraulic intensifier coupled to the brake housing, the air-to-hydraulic intensifier configured to receive a supply of air and provide a hydraulic fluid to the brake housing based on the supply of air to overcome the brake biasing force to disengage the rod from the brake to permit movement of the tractive element; a hydraulic reservoir; and a valve positioned between the air-to-hydraulic intensifier, the brake housing, and the hydraulic reservoir.

Google Patents

https://patents.google.com/patent/US12434672

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12434672