Reduced profile piston adjuster
AssigneeHoneywell International Inc.
InventorsWilliam E Pajak, Jonathan T. Beehler, Brian Shula
Life of this patent
Estimating the term…
Abstract
In some examples a piston-bushing assembly includes a bushing with an opening and a piston slidably disposed within the bushing. The piston includes a bottom end disposed within the bushing and an exterior end extending a distance outward from the opening of the bushing. The exterior end of the piston is configured to engage with a disc stack of a brake assembly. The piston-bushing assembly also includes an adjuster tube including a first end of the adjuster tube, wherein, when the piston-bushing assembly is in an unactuated state, a length between the first end of the adjuster tube and the bottom end of the piston defines a step-back gap.
Claims20
A piston-bushing assembly comprising:
- a bushing comprising an opening;
- a piston slidably disposed within the bushing, the piston comprising:
- a bottom end disposed within the bushing;
- and
- an exterior end extending a distance outward from the opening of the bushing and
- configured to engage with a disc stack of a brake assembly;
- an adjuster tube comprising a first end of the adjuster tube;
- and
- an expander disposed within the adjuster tube,
- wherein when the piston-bushing assembly is in an unactuated state, a length between the first end of the adjuster tube and the bottom end of the piston defines a step-back gap, and
- wherein when the piston-bushing assembly is in an actuated state, an actuation force causes the bottom end of the piston to directly contact the first end of the adjuster tube and apply a compressive force between the bottom end of the piston and the expander to cause the adjuster tube to slip over the expander in response to the compressive force exceeding a threshold.
An assembly comprising:
- a wheel configured to rotate around a wheel axis;
- a brake assembly comprising:
- a disc stack comprising a rotor disc and a stator disc, wherein the rotor disc is rotationally coupled to the wheel, and wherein the wheel is configured to rotate relative to the stator disc;
- and
- an actuator configured to compress the disc stack via a piston-bushing assembly comprising:
- a bushing comprising an opening;
- a piston slidably disposed within the bushing, comprising:
- a bottom end disposed within the bushing;
- and
- an exterior end extending a distance outward from the opening of the bushing and configured to engage with the disc stack of the brake assembly;
- an adjuster tube comprising a first end of the adjuster tube;
- and
- an expander disposed within the adjuster tube,
- wherein when the piston-bushing assembly is in an unactuated state, a length between the first end of the adjuster tube and the bottom end of the piston defines a step-back gap, and
- wherein the actuator is configured to actuate the piston-bushing assembly and cause an actuation force to push on and cause the bottom end of the piston to directly contact the first end of the adjuster tube and apply a compressive force between the bottom end of the piston and the expander to cause the adjuster tube to slip over the expander in response to the compressive force exceeding a threshold.
Dependencies are inferred from the claim text.