Pneumatic tube system for high carrier speeds

• US 3,148,845 A
• Filed: 05/17/1962
• Issued: 09/15/1964
• Est. Priority Date: 05/23/1961
• Status: Expired due to Term

• Current Assignee: Fritz Buchwald, Hans Kudritzki
• Original Assignee: Fritz Buchwald, Hans Kudritzki
• Inventors: Buchwald, Fritz, HANS KUDRITZKI
• Application Number:
  US04/195,604
• Time in Patent Office: 852 Days
• US Class Current: 406/19
• CPC Class Codes: B61B 13/122 Pneumatic systems

Claims

2. A PNEUMATIC TUBE SYSTEM FOR HIGH SPEED CARRIERS COMPRISING A FORWARDING TUBE FOR CONVEYING A CARRIER, A FIRST SLIDE PLATE DISPOSED AT THE ENTRANCE TO SAID TUBE, A SECOND SLIDE PLATE DISPOSED AT THE EXIT OF SAID TUBE, A BLOWER PRODUCING COMPRESSION ON ONE OF ITS SIDES AND PRODUCING VACUUM ON ITS OTHER SIDE, A FIRST CONNECTION LOCATED IN SAID TUBE NEAR SAID ENTRANCE SLIDE PLATE, A FIRST VALVE CONNECTED BETWEEN SAID FIRST CONNECTION AND THE VACUUM SIDE OF SAID BLOWER TO APPLY SUCTION TO SAID TUBE, A SECOND VALVE CONNECTED BETWEEN THE COMPRESSION SIDE OF SAID BLOWER AND THE ATMOSPHERE, SAID FIRST AND SECOND VALVES NORMALLY BEING OPEN BEFORE A CARRIER HAS ENTERED SAID TUBE, A THIRD VALVE CONNECTED BETWEEN SAID FIRST CONNECTION AND THE COMPRESSION SIDE OF SAID BLOWER, A FOURTH VALVE CONNECTED BETWEEN SAID VACUUM SIDE OF SAID BLOWER AND THE ATMOSPHERE, SAID THIRD AND FOURTH VALVES NORMALLY BEING CLOSED BEFORE A CARRIER HAS ENTERED SAID TUBE, A