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Comments on Tanaka Auto Door
You may be wondering what is so great about a door that opens only just enough to let a person come in or out... besides being cool. (Read the complete story)

"In many of Robert Heinlein's novels, doors would "dilate" open. "
(Nyrath 8/22/2005 7:33:32 AM)
"You're right - but he doesn't make the mechanism clear. "Dilate" just means "make larger." For example, in Methuselah's Children, Lazarus Long enters a room through such a door.
"As the door to the lounge dilated noiselessly in front of him the sound of voices became loud and very interesting. The lounge was el-shaped and he was out of sight; he hung back and listened shamelessly.""
(Bill Christensen 8/22/2005 10:43:26 AM)
"On the other hand, it also "relaxes" closed. In Double Star, Heinlein writes
"1 did not get to hear Broadbent say who he thought it might be as Dubois dilated the door. Framed in the doorway, looking like a nightmare toadstool, was a Martian. For an agony-stretched second I could see nothing but the Martian. I did not see the human standing behind him, nor did I notice the life wand the Martian cradled in his pseudo limb. Then the Martian flowed inside, the man with him stepped in behind him, and the door relaxed.
The Martian squeaked, "Good afternoon, gentlemen. Going somewhere?""
(Bill Christensen 8/22/2005 10:57:38 AM)
"Huh. That's actually better than practically every iteration of the automatic door I've seen presented either on film or television. "
(J 8/22/2005 1:26:10 PM)
"If you add a keypad to enter a code, nobody can get through the door while it's open!"
( 8/26/2005 11:51:52 AM)
"the auto door is cool, but they need to improve how it comes together, looks a little shaky on the video"
( 8/30/2005 7:24:35 AM)
"the door has nothing over a regular opening door "
(jerry 8/30/2005 7:26:38 AM)
"@Chief Technovelgist: In the film version of "The Puppet Masters", we see membranes separating chambers in the alien Hive that open from the center, like an iris."
(Chris Johnston (cljohnston108) 9/24/2005 9:28:00 AM)
"Here is a youtube video of the Tanaka automatic door.

(Tanaka Automatic Door)

"
(Bill Christensen 3/18/2007 5:53:32 PM)

Get more information on Tanaka Auto Door

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