Remote control device vacuum or ventilation system

Details Remote control device vacuum or ventilation system Remote control device vacuum or ventilation system

1990-05-23

1993-03-09

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15319, A47L 538

Patent

active

051916738

ABSTRACT:
This device has a housing 2, a motorized vacuum turbine 4 pneumatically connected to outlet 2b of a housing, and at least one tube 6 whose downstream end 6a terminates in housing 2, and structure 13, 40 connected to upstream end 6b of tube 6 capable of generating a temporary pneumatic pressure wave in the direction of its downstream end 6a. The latter is associated with structure 20, 22 for detecting the pressure wave and acting on module 23 for controlling the power to electric motor 3 of vacuum turbine 4 to start the system operating. The pneumatic pressure wave is conveyed by tube 6 itself from its upstream end 6b to its downstream end 6a, this downstream end being provided with a shutoff flap 18, normally held in the closed position and capable of causing the tube to be opened under the influence of the vacuum flow.

REFERENCES:
patent: 1106231 (1914-08-01), Marshall
patent: 2979755 (1961-04-01), McCaskill
patent: 3083396 (1963-04-01), Senne et al.
patent: 3669145 (1972-06-01), Holstrom
patent: 3873790 (1975-03-01), Coons
patent: 4225272 (1980-09-01), Palmovist
patent: 4829626 (1989-05-01), Harkonen et al.

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