Military vehicle

Patent metadata

Field	Value
Publication number	US-12434672-B1
Application number	US-202318379395-A
Country	US
Kind code	B1
Filing date	Oct 12, 2023
Priority date	Mar 26, 2012
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

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.

First claim

The invention claimed is:

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.

2. The military vehicle of claim 1 , wherein 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 housing, and a valve gate that is repositionable between a first position and a second position, the first position coupling the first port to the third port to fluidly couple the air-to-hydraulic intensifier to the brake housing, the second position coupling the second port to the third port to fluidly couple the hydraulic reservoir to the brake housing.

3. The military vehicle of claim 2 , wherein the brake biasing force of the resilient member is configured to bias the piston to force the hydraulic fluid out of the brake housing, through the valve, and into the hydraulic reservoir in response to the valve being in the second position.

4. The military vehicle of claim 2 , wherein the valve includes:
an air pilot positioned at a first end of the valve gate; and
a biasing element positioned at an opposing second end of the valve gate, the biasing element configured to provide a valve biasing force to the valve gate to bias the valve gate into the second position.

5. The military vehicle of claim 4 , further comprising an air supply line coupled to the air-to-hydraulic intensifier and the air pilot, the air supply line configured to provide the supply of air to the air-to-hydraulic intensifier and the air pilot.

6. The military vehicle of claim 5 , wherein the supply of air provided to the air pilot overcomes the valve biasing force to reposition the valve gate into the first position to place the air-to-hydraulic intensifier into fluid communication with the brake housing to facilitate disengaging the brake.

7. The military vehicle of claim 1 , wherein the air-to-hydraulic intensifier includes a hydraulic pump.

8. The military vehicle of claim 1 , wherein the passenger capsule defines a front door aperture, a rear door aperture, and an interlocking door frame portion positioned along and protruding outward from an exterior of the passenger capsule and positioned between the front door aperture and the rear door aperture.

9. The military vehicle of claim 8 , wherein the passenger capsule includes (i) a front door positioned to selectively enclose the front door aperture and (ii) a rear door positioned to selectively enclose the rear door aperture, and wherein the front door and the rear door selectively engage with the interlocking door frame portion when closed.

10. The military vehicle of claim 1 , wherein the passenger capsule includes sidewalls and a floor coupled to the sidewalls, wherein bottom edges of the sidewalls extend past and below the floor, further comprising a belly deflector having lateral ends coupled to the bottom edges of the sidewalls, wherein the belly deflector is positioned beneath and isolated from the floor.

11. The military vehicle of claim 1 , wherein the passenger capsule includes a floor that defines a structural tunnel having an arcuate-shaped profile extending into an interior of the passenger capsule, further comprising energy absorbing seats positioned on opposing sides of the structural tunnel, the energy absorbing seats including a shock attenuating system.

12. The military vehicle of claim 1 , further comprising:
a generator configured to generate electricity; and
an export power kit coupled to the generator and configured to facilitate exporting power off of the military vehicle.

13. A military vehicle comprising:
a brake system including:
an air-to-hydraulic intensifier configured to couple to a brake actuator that engages a brake to limit movement of a tractive element, the air-to-hydraulic intensifier 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 positioned between the air-to-hydraulic intensifier, the brake actuator, and the hydraulic reservoir; and

a passenger capsule defining a front door aperture, a rear door aperture, and an interlocking door frame portion positioned along and protruding outward from an exterior of the passenger capsule between the front door aperture and the rear door aperture, the passenger capsule including (i) a front door positioned to selectively enclose the front door aperture and (ii) a rear door positioned to selectively enclose the rear door aperture, wherein the front door and the rear door selectively engage with the interlocking door frame portion when closed.

14. The military vehicle of claim 13 , wherein 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 and a second position, the first position coupling the first port to the third port to fluidly couple the air-to-hydraulic intensifier to the brake actuator, the second position coupling the second port to the third port to fluidly couple the hydraulic reservoir to the brake actuator.

15. The brake system of claim 14 , wherein the valve includes:
an air pilot positioned at a first end of the valve gate; and
a biasing element positioned at an opposing second end of the valve gate, the biasing element configured to provide a valve biasing force to the valve gate to bias the valve gate into the second position.

16. A brake system comprising:
an air-to-hydraulic intensifier configured to couple to a brake actuator that engages a brake to limit movement of a tractive element, the air-to-hydraulic intensifier 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 positioned between the air-to-hydraulic intensifier, the brake actuator, and the hydraulic reservoir, the valve including:
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

Assignees

• Oshkosh Defense Llc

Inventors

• Verhoff Don
• Schmiedel Gary
• Yakes Chris
• Messina Rob
• Wilkins Brian
• Schulte Kent
• Seffernick Daniel R
• Holda Joseph
• Peotter Michael
• Mcgraw David
• Seefeldt Anthony
• Pelko Dave
• Gander Jesse
• Reineking Jerry
• Steinke Jesse

Classifications

• F41H7/044

  Hull or cab construction other than floors or base plates for increased land mine protection (mounting of armoured plates F41H5/013) · CPC title

• B60T13/583

  using converters · CPC title

• B60T13/249

  Hydraulic command of the control valve, hydraulic transmission to the brakes · CPC title

• B60T13/14

  using accumulators or reservoirs {fed by pumps} · CPC title

• B60T13/581

  both hydraulic and pneumatic · CPC title