1977-04-25
1978-06-20
Blunk, Evon C.
Cutlery
302 25, B65G 5304
Patent
active
040958477
ABSTRACT:
A first elongated hollow conveyor tube has one end in communication with the source of material to be conveyed and its other end in communication with the area to which the material is to be conveyed. A second hollow tube embraces a portion of the length of the first tube and has a larger diameter than the first tube so that an elongated annular compartment area is defined therebetween. The ends of the second tube are sealed to the exterior surface of the first tube. Air under pressure is supplied to the compartment area at approximately 15-30 PSI and 220-500 C.F.M. The first tube has a plurality of spaced-apart openings formed therein which are in communication with the compartment area. An air tube is mounted in each of the openings and has an intake end in communication with the compartment area and a discharge end in communication with the interior of the first tube. The air tubes have their discharge ends disposed relative to the interior of the first tube whereby air supplied to the compartment area will pass through the air tubes and will be discharged into the first tube towards the second end thereof to convey the material towards the second end of the tube.
REFERENCES:
patent: 137507 (1873-04-01), Thayer
patent: 140017 (1873-06-01), Cram
patent: 1051905 (1913-02-01), McCord
patent: 1232393 (1917-07-01), Piper
patent: 1458523 (1923-06-01), Coutant
patent: 1892920 (1933-01-01), Weiss
patent: 3826279 (1974-07-01), Verschuur
Blunk Evon C.
Rowland James L.
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