Clamp could have several applications, as it provides tolerance for both expansion and contraction. It might be useful with firemen's breathing apparatus and luggage racks and other freight-carrying equipment. Also, using same piece as handle and spring reduces production costs by reducing number of parts

Simmonds, M.

English

NASA Technical Reports Server

S
Band 
Clamp 
FA 
/ 
/
Elastic 
Travel 
December 1974	 B74-10240 
NASA TECH BRIEF 
Lyndon B. Johnson Space Center . 
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 program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
A Band Clamp With a Spring Toggle Lever 
A band clamp has been designed with a toggle lever 
that allows it to be fastened and unfastened quickly and 
easily. This clamp has an additional fixture that makes 
it useful where stresses cause a change in the size of the 
clamped part. The toggle lever is also a spring that 
holds the clamped part with the same force, even 
though the part may expand or contract. 
The device as shown is used to attach an air tank 
to a carrying frame. In this application, tanks of 
somewhat different diameters can be accommodated 
without band adjustment. The spring force of the toggle 
lever keeps the band tight.
The lever is a U-shaped elastic bar that pivots at each 
end. The toggle lever is designed so that in the clamped 
position the elastic bar is slightly compressed. In this 
way there is a constant tightening force on the clamp. 
The clamp could have several other applications, as it 
provides tolerances for both expansion and contraction. 
It might be useful with firemen's breathing apparatus 
and luggage racks and other freight-carrying equipment. 
Also, using the same piece as a handle and a spring 
reduces production costs by reducing the number of 
parts. 
- 
rivot
Band Clamped 
Band Loosened
Frame For Air Tanks
(continued overleaf) 
This 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=19740000240 2020-03-17T13:53:59+00:00Z
Note: 
No further documentation is available. However, 
technical questions may be directed to: 
Technology Utilization Officer 
Johnson Space Center 
Code AT3 
Houston, Texas 77058 
Reference: B74-10240
Patent status: 
NASA has decided not to apply for a patent. 
Source: M. Simmonds of
ATO, Inc.
under contract to
Johnson Space Center
(MSC-14736)
. 
B74-10240
	 Category 07, 05
	
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A band clamp with a spring toggle lever

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