Power-assistance device
OwnerJohannes Genginventor
Life of this patent
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Abstract
A power-assist device (1) with a piston rod (8), which is mounted movably in a housing (7) and has a first position and a second position, and with a preferably elastic return element (12), which can be arrested by a positionally variable arresting part (10) and which, in the unlocked state, can transmit an assisting force to the piston rod (8) and, in the arrested state, is decoupled in terms of force from the piston rod (8), such that, in the unlocked state, as a result of the piston rod (8) being moved into the first position, the arresting part (10) is moved out of an unlocking position into an arresting position, which enables arresting of the restoring return (12) only within a limited time period.
Claims20
A power assist device (1), comprising:
- a movably mounted piston rod (8), which has a first position and a second position;
- a return element (12), which is arrestable via a positionally variable arresting means (10), by which an assistance force is transmittable to the piston rod (8) in an unlocked state, and which in an arrested state is decoupled in terms of force by the piston rod (8);
- and
- wherein in the unlocked state, a movement of the piston rod (8) to the first position moves the arresting means (10) from an unlocking position to an arresting position, which enables arresting of the return element (12) only within a limited period of time.
Dependencies are inferred from the claim text.