Hinge assemblies
AssigneeHewlett-Packard Development Company, L.P.
InventorsWei-Chung Chen, Kuan-Ting Wu
Life of this patent
Estimating the term…
Abstract
In an example, a device includes a base unit, a cover unit, and a hinge assembly to couple the cover unit to the base unit The hinge assembly is moveable between a folded position and an unfolded position. The hinge assembly includes a channel, an annular holder disposed in the channel, a shaft engaged with the annular holder, and a hydraulic cylinder coupled to the shaft. The hydraulic cylinder is to move the shaft along a longitudinal axis of the shaft, based on a movement of the hinge assembly between the folded position and the unfolded position, to vary an operating torque of the hinge assembly.
Claims15
A device comprising:
- a base unit;
- a cover unit;
- and
- a hinge assembly to couple the cover unit to the base unit, the hinge assembly being moveable between a folded position and an unfolded position, the hinge assembly comprising:
- a channel;
- an annular holder disposed in the channel;
- a shaft engaged with the annular holder;
- a hydraulic cylinder coupled to the shaft, wherein the hydraulic cylinder is to move the shaft along a longitudinal axis of the shaft, based on a movement of the hinge assembly between the folded position and the unfolded position,
- a reservoir storing a fluid, the reservoir being coupled to the hydraulic cylinder;
- and
- a motor coupled to the reservoir to drive the fluid between the reservoir and the hydraulic cylinder.
A device comprising:
- a base unit;
- a cover unit;
- and
- a hinge assembly to couple the cover unit to the base unit, the hinge assembly comprising:
- a first hinge element having a channel coupled to the base unit;
- an annular holder disposed in the channel;
- a second hinge element coupled to the cover unit, comprising:
- a shaft engaged with the annular holder, the shaft being rotatable about a longitudinal axis of the shaft, to move the hinge assembly between a folded position and an unfolded position;
- and
- a hydraulic cylinder coupled to the shaft;
- a reservoir storing a fluid, the reservoir being coupled to the hydraulic cylinder;
- and
- a motor coupled to the reservoir to drive the fluid between the reservoir and the hydraulic cylinder.
A device comprising:
- a base unit;
- a cover unit;
- a hinge assembly to couple the cover unit to the base unit, the hinge assembly comprising:
- a channel;
- an annular holder disposed in the channel;
- a shaft engaged with the annular holder;
- and
- a hydraulic cylinder coupled to the shaft, wherein the hydraulic cylinder is to:
- move the shaft in a first direction along a longitudinal axis of the shaft, in response to the cover unit being moved beyond a threshold angle with respect to the base unit, to increase an operating torque of the hinge assembly;
- and
- move the shaft in a second direction, opposite to the first direction, in response to the cover unit being moved below the threshold angle with respect to the base unit, to reduce the operating torque,
- a reservoir storing a fluid, the reservoir being coupled to the hydraulic cylinder;
- and
- a motor coupled to the reservoir to drive the fluid between the reservoir and the hydraulic cylinder.
Dependencies are inferred from the claim text.