Who invented the Garage door opener

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Offline GOLDFINDER2

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Who invented the Garage door opener
« on: 30/03/2013 05:18:51 »
WHO INVENTED THE GARAGE DOOR OPENER?
« Last Edit: 10/05/2013 21:58:20 by CliffordK »

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Offline Don_1

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Re: Who invented the Garaqge door opener
« Reply #1 on: 23/04/2013 13:51:54 »
C G Johnson, of Hartford City, Indiana in 1926 is accredited with the design of an up-and-over garage door using an electric motor. Counterbalances provided the bulk of the lift, so the motor needed only have a small power rating.

It was not popularised until after WWII when the Chicago based Era Meter Co. began production.
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Offline cheryl j

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Re: Who invented the Garage door opener
« Reply #2 on: 18/05/2013 04:49:59 »
How come when I was a kid, airplanes flying overhead would sometimes make electric garage doors open or close? This was in the 60s/70s.

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Offline damocles

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Re: Who invented the Garage door opener
« Reply #3 on: 27/05/2013 14:15:51 »
How come when I was a kid, airplanes flying overhead would sometimes make electric garage doors open or close? This was in the 60s/70s.
Did it ever happen with other loud noises/vibrations?
My thinking is that maybe the door was too finely counterbalanced, and that fully open/fully closed were only shallow potential wells.

(Or maybe the door, on hearing the plane, got an ambition to fly, and found that the open position was as near as it could get?)[;D]
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Offline RD

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Re: Who invented the Garage door opener
« Reply #4 on: 14/06/2014 09:25:11 »
How come when I was a kid, airplanes flying overhead would sometimes make electric garage doors open or close? This was in the 60s/70s.

Radio-signal from the aircraft triggering the wireless garage door opener ?
« Last Edit: 14/06/2014 09:27:06 by RD »