Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1989-10-19
1991-01-15
Noland, Tom
Measuring and testing
Sampler, sample handling, etc.
Capture device
73 3102, 7386473, G01N 124
Patent
active
049844768
ABSTRACT:
An air conveyor for a gas-sampling tube that is used for detecting foreign gases or suspended substances in air is described. The air conveyor comprises a body, serving as a handle, that has a control rod which is guided and lockable in a through-duct therein, and which is connected at one end to a bellows that serves as a suction element. The beginning and the end of the suction stroke is uniquely determined by a locking and releasing mechanism connected to the control rod thereby ensuring an exactly reproducible stroke volume. The locking and releasing mechanism utilizes two lever-like linkages, each provided with a hook, which are pivotally disposed in the body one under the other and parallel to the control rod. The free end of the control rod has at least one recess which is in operative connection with the hook on the first lever to secure the control rod in position at the beginning of a suction stroke and with the hook on the second lever to secure the control rod in position at the end of the suction stroke.
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patent: 4793706 (1988-12-01), Csillag et al.
Dahrendorf Klaus D.
Noack Ulrich
Auergesellschaft GmbH
Noland Tom
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