Airflow Regulator
OwnerVerne Muttoninventor
Life of this patent
Estimating the term…
Abstract
A louvre-type airflow regulator (10) for a mine passage comprises a plurality of louvre blades (12, 14, 16). Each blade is adapted for mounting in a frame (20). Each blade can pivot in the frame around a lengthwise axis between a predetermined position in which the louvre blades combine to close or restrict at least a portion of the passage, and an open position in which air is able to readily flow between the louvre blades and through the passage. A biasing mechanism is provided for acting on each louvre blade such that, in use, each louvre blade can be maintained in the predetermined position until a predetermined airflow against the louvre blades is reached.
Claims18
A louvre-type airflow regulator for a mine passage comprising:
- a plurality of louvre blades, each adapted for mounting in a frame and pivoting therein around a lengthwise axis between a predetermined position in which the louvre blades combine to close or restrict at least a portion of the passage, and an open position in which air is able to readily flow between the louvre blades and through the passage;
- a biasing mechanism for acting on each louvre blade such that, in use, each louvre blade can be maintained in the predetermined position until a predetermined airflow against the louvre blades is reached;
- wherein
- the predetermined position is adjustable and includes at least one partially open position of the blades between a closed position and a fully open position.
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A blast proof regulator for a mine passage comprising:
- a plurality of louvre blades, mounted in a frame and pivoting therein around a lengthwise axis between at least a predetermined position in which the louvre blades combine to close or restrict at least a portion of the passage, and an open position in which air is able to readily flow between the louvre blades and through the passage;
- a biasing mechanism for acting on each louvre blade such that, in use, each louvre blade can be maintained in the predetermined position until a predetermined airflow against the louvre blades is reached;
- wherein
- the predetermined position is adjustable and includes at least one partially open position of the blades between a closed position and a fully open position;
- and wherein
- the louvre blades are adapted to pivot open at a predetermined airflow in the mine passage and return to their respective predetermined positions after removal of the predetermined airflow.
Dependencies are inferred from the claim text.