Coupling
AssigneeVHIT S.p.A. Unipersonale
InventorLeonardo Cadeddu
Life of this patent
Estimating the term…
Abstract
A device for controlling the activation of an apparatus by a motor, intended to be inserted between, the operation output of the motor and the operation input of the apparatus whose activation is to be controlled. The device includes: —a blade pump having a rotor, at least one blade carried by this rotor and a rotary body forming a pumping chamber missing an outlet, and one of the component parts, among the rotor and the rotary body, being connected to the operation output of the motor, whilst the other of these component parts is connected to the operation input of the apparatus to be controlled; —and a supply intended to supply liquid to the pumping chamber.
Claims9
A device for controlling the operation of a vacuum pump, comprising:
- a blade pump comprising a rotor having at least one blade, a rotary body housing said rotor, a pumping chamber defined by said rotary body, said pumping chamber having no fluid outlet other than by leakage at seals of said pumping chamber, one of the rotor and rotary body being adapted to connect to an input shaft to the vacuum pump and the other of the rotor and rotary body being adapted to connect to a rotor of the vacuum pump;
- and a liquid supply device adapted to supply a liquid to said pumping chamber, said liquid supply device being controllable between a first state in which said liquid supply device supplies liquid to the pumping chamber in an amount sufficient to fill the pumping chamber and a second state in which said liquid supply device supplies liquid to the pumping chamber in an amount insufficient to fill the pumping chamber, response to a determination of whether the vacuum pump is to be actuated.
Dependencies are inferred from the claim text.