US 2015/0147212 A1Published application

Reversible pneumatic vane motor

AssigneeAtlas Copco Industrial Technique AB

InventorAnders Urban Nelson

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Abstract

A reversible pneumatic vane motor includes a stator housing with a pressure air inlet passage and an exhaust air outlet passage, a cylinder supported in the stator housing, a vane carrying rotor rotatable in the cylinder and forming a clearance seal portion with the cylinder, air communication ports located at opposite sides of the seal portion for supplying motive pressure air or scavenging exhaust air from the cylinder, a primary outlet diametrically opposite the clearance seal portion, and a directional valve for connecting alternatively the air communication ports to the pressure air inlet passage and the exhaust air outlet passage. The motor also includes auxiliary outlet ports which are located between the primary outlet and each one of the air communication ports, and the directional valve includes control parts for opening up and closing, respectively, communication between the auxiliary outlet ports and the atmosphere via the exhaust air outlet passage.

Claims3

Dependent claims

A reversible pneumatic vane motor, comprising:

a stator housing with a pressure air inlet passage and an exhaust air outlet passage,
a cylinder having opposite end walls and supported in the stator housing,
a vane carrying rotor rotatable in the cylinder and forming a clearance seal portion with the cylinder,
air communication ports located at opposite sides of the clearance seal portion and intended for supplying motive pressure air or scavenging exhaust air from the cylinder,
a primary outlet located diametrically opposite the clearance seal portion, and
a directional valve shiftable between two positions for connecting alternatively the air communication ports to the inlet passage and the outlet passage, characterized in that wherein:
auxiliary outlet ports are provided at angular positions between the primary outlet and each one of the air communication ports,
the directional valve comprises control parts for opening up and closing, respectively, communication between said auxiliary outlet ports and the outlet passage when shifting the directional valve from one of its positions to the other, and
the air communication ports as well as said auxiliary outlet ports are located at one end wall of the cylinder.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/404,351Filed 29 May 2013
Priority: SE 1250572-31 Jun 2012
Published: 28 May 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F01C 20/04
Control of, monitoring of, or safety arrangements for, machines or engines: specially adapted for reversible machines or engines
F01C 1/3442
The inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation: the surfaces of…
F01C 13/02
Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby: for driving hand-held tools or the like
F01C 20/14
Characterised by changing the positions of the inlet or outlet openings with respect to the working chamber: using rotating valves

Family

US 9,835,031 B2Related patent
US 2015/0147212 A1This patent

From the US filing history. Foreign family members aren’t listed.

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