Comments on: How does the tube system for sending your checks/$ from your car to the teller work during drive up banking? http://www.secretfinance.com/blog/how-does-the-tube-system-for-sending-your-checks-from-your-car-to-the-teller-work-during-drive-up-banking/ Thu, 17 May 2012 20:14:13 +0000 http://wordpress.org/?v=2.7 hourly 1 By: InspectorBudget http://www.secretfinance.com/blog/how-does-the-tube-system-for-sending-your-checks-from-your-car-to-the-teller-work-during-drive-up-banking/comment-page-1/#comment-2072 InspectorBudget Tue, 11 Aug 2009 06:30:10 +0000 http://www.secretfinance.com/blog/how-does-the-tube-system-for-sending-your-checks-from-your-car-to-the-teller-work-during-drive-up-banking/#comment-2072 It is a pneumatic system. It uses compressed air to blow the tube to the teller, then when she's ready to send it back, the direction of the blow is changed and the tube is blown back to you. That's why you'll hear a loud "Thud" as the tube hits the bumper when it returns to you. Its a little like what you see in a straw. If you have some solid object blocking the straw, you could blow to get it out. Well, that's how it works. It is a pneumatic system.

It uses compressed air to blow the tube to the teller, then when she’s ready to send it back, the direction of the blow is changed and the tube is blown back to you.

That’s why you’ll hear a loud “Thud” as the tube hits the bumper when it returns to you.

Its a little like what you see in a straw. If you have some solid object blocking the straw, you could blow to get it out. Well, that’s how it works.

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