Transparent spray booth provides method for quality painting and repair of surfaces in clean room or other specialized environments. Overspray and virtually all contaminating vapor and odor can be eliminated. Touch-up painting is achieved with spray gun

Fee, K. W.

English

NASA Technical Reports Server

NASA TECH BRIEF 
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Figure 2. Complete Spray Gun 
Paint Reservoj 
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Vacuum Line 
November 1970	 Brief 70-10549 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the National Technical Information Service, Springfield, 
Virginia 22151. Requests for individual copies or questions relating to the Tech Brief progam may be directed to the Tech-
nology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
Miniature Spray-Painting Booth 
The prototype miniature transparent spray booth 
provides a method for quality painting and repair of 
surfaces in clean room and other specialized environ-
ments. Overspray and virtually all contaminating 
vapor and odor can be eliminated. Touch-up painting 
is achieved with a spray gun which uniformly blends 
the paint with the surrounding surface. A small 
chamber is used with the gun for containing the over-
spray. This item could serve in auto shops, labora-
tories, showrooms, and in all industries which require 
specialized painting. 
One end of a 13-in, length of 7-in.-diameter trans-
parent plastic (such as polymethyl methacrylate) 
tubing is mounted on a heavy rubber ring, preferably 
faced with sponge rubber (see Fig. 1). Two vertical 
baffles of perforated plastic sheet are set within the 
tube. A sleeve of material is taped over the other end 
of the tube. A plastic tube runs through a small side 
(ntinued o verleaf) 
NOW
Ihis document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States
	 information contained in this document, or warrants that such use Government nor any person acting on behalf of the United •States
	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19700000531 2020-03-17T00:36:15+00:00Z
hole in the sleeve to a vacuum pump for the purpose 
of carrying wastes away from the painting. 
A polyethylene paint reservoir (approximately 2-oz 
capacity) is mounted on a commercial spray gun by 
means of a disk of polytetrafluoroethylene, drilled and 
tapped to match the thread of the gun's paint nipple, 
and an 0-ring or rubber band clamps the reservoir 
over the disk's edge, as shown in Figure 2. To operate, 
the miniature spray booth is held in the left hand and 
the vacuum hose is connected to the exhaust fitting. 
The spray gun is connected to a source of adjusted 
air (10 to 12 psi). The booth is held against the area 
to be touched-up with the left hand, and the right hand 
is inserted into the booth to perform the touch-up 
painting. Quality of the interior finish over damaged 
areas is assured. Before removing the booth from
the touched-up places, about 10 seconds should be 
allowed to permit all dust to be removed by the 
vacuum. 
Note: 
No additional documentation is available. Specific 
questions, however, may be directed to: 
Technology Utilization Officer 
Manned Spacecraft Center, Code BM7 
Houston, Texas 77058 
Reference: B70-10549 
Patent status: 
No patent action is contemplated by NASA. 
Source: Kenneth W. Fee of 
North American Rockwell Corp. 
under contract to 
Manned Spacecraft Center 
(MSC- 15811) 
Brief 70-10549	 Category 03


Miniature spray-painting booth

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