Air duct and furnace cleaning system and method

Details Air duct and furnace cleaning system and method Air duct and furnace cleaning system and method

1993-04-09

1995-03-28

Culbreth, Eric D.

Motor vehicles

Motor as source of power for other machine

Hydraulic drive to other machine

15314, 60432, 60469, 97136, 180 538, 296 26, A47L 900, F23J 102

Patent

active

054008638

ABSTRACT:
A power vacuum truck having a movable roof to accommodate expanding vacuum bags, and a method of raising the roof are disclosed. The power vacuum truck utilizes a hydraulic pump to drive a fan and compressor in order to eliminate mechanical linkages and the concomitant breakdown and maintenance associated therewith, and eliminates holes in the roof previously necessary to accommodate the expandable vacuum bags. An vehicle having an automatic transmission can be used.

REFERENCES:
patent: 2315639 (1943-04-01), Monahan
patent: 3585788 (1971-06-01), Wilson
patent: 4887860 (1989-12-01), Dowty
patent: 5088785 (1992-02-01), Lee
Cleanfax May/Jun. 1992 advertisement.

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