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US 5,755,223 AGranted
Delivery device for a respirator
AssigneeDragerwerk Aktiengesellschaft
InventorsBernhard Schaible, Thomas Leyer, Siegfried Kiske
Life of this patent
Estimating the term…
Abstract
A delivery device for supplying a respirator with breathing gas includes a cylinder housing with a piston, and a drive unit for generating delivery strokes, which is connected to the piston via a piston rod. A compact design is achieved by providing the drive unit with a motor-driven hollow shaft with a spindle acting as a piston rod displaceable in it telescopically.
Claims18
A delivery device for supplying a respirator with breathing gas, the delivery device comprising:
- a substantially cylindrical housing
- a piston disposed in said housing;
- a drive unit for generating piston delivery strokes, said drive unit being connected to said piston via a piston rod, said drive unit including a motor-driven hollow shaft with a spindle forming said piston rod, said spindle being accommodated on said hollow shaft telescopically;
- gas connection lines for the breathing gas to be delivered, said gas connection lines opening into an inner space of said cylinder housing;
- an elastic coupling element provided between said piston and said spindle.
2 more elements
A respirator delivery device, comprising:
- a housing;
- a piston disposed in said housing;
- a drive unit for generating piston delivery strokes, said drive unit including a motor, a hollow shaft rotationally driven by said motor and a spindle connected to said hollow shaft, said spindle moving telescopically upon rotation of said hollow shaft, said spindle being connected to said piston;
- gas connection lines for the breathing gas to be delivered, said gas connection lines opening into an inner space of said cylinder housing and;
- an elastic coupling element provided between said piston and said spindle.
2 more elements
A respirator delivery device, comprising:
- a housing;
- a piston disposed in said housing;
- a drive unit for generating piston delivery strokes, said drive unit including a motor, a hollow shaft rotationally driven by said motor and a spindle connected to said hollow shaft, said spindle moving telescopically upon rotation of said hollow shaft, said spindle being connected to said piston, said drive unit together with said housing being fastened on a bracket, said bracket being connected to a respirator housing, said bracket for pivoting said cylindrical housing relative to said respirator housing;
- and
- gas connection lines for the breathing gas to be delivered, said gas connection lines opening into an inner space of said cylinder housing.
2 more elements
Dependencies are inferred from the claim text.