Pneumatic tube stop device and terminal

Details Pneumatic tube stop device and terminal Pneumatic tube stop device and terminal

1989-02-10

1990-11-20

Basinger, Sherman

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of conveying fluid

406 21, 406 83, 406112, 406179, 406180, B65G 5116

Patent

active

049714813

ABSTRACT:
The present invention describes a stop device for stopping a carrier traveling in a pneumatic tube. The invention also includes a terminal comprising the stop device. The stop device includes a pneumatic tube having an exhaust aperture and a shutoff aperture and a pressure sensing monitor in fluid communication with the shutoff aperture. The pressure monitor senses the pressure change in the shutoff aperture caused by the carrier's movement past the shutoff aperture and activates a switch shutting off the pneumatic source. The carrier impacts an end stop and settles down on a catch which was also activated by the pressure monitor. The carrier is held in front of a door through which the carrier may be readily retrieved.

REFERENCES:
patent: 592765 (1897-11-01), Casey
patent: 2016946 (1935-10-01), Scanlan
patent: 3790102 (1974-02-01), Tearne

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