The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1984
Filed:
Oct. 29, 1980
Hill S Lalin, Wayne, NJ (US);
Gilian Instrument Corporation, Wayne, NJ (US);
Abstract
An air sampler constructed as an integrated unit which can be attached to the clothing of personnel operating in an area where the air must be sampled. The sampler includes a pump, a damper, a regulator, a filter for removing dust or dirt from the air being sampled, and collecting or processing means for the sampled air. The pump is driven by a motor provided with a control which maintains the flow of air through the sampler constant. The regulator is connected directly between the inlet and the outlet of the sampler. It includes a pair of chambers separated by a flexible diaphragm, one chamber connected to the outlet and the other to the inlet. For a pressure differential exceeding a predetermined magnitude between the outlet chamber and the inlet chamber, the diaphragm by its flexing opens a valve to permit air to flow from the outlet to the inlet. The filter is in a transparent container so that it can be seen and removed when it becomes excessively loaded with dirt. The outlet from the filter downstream is near its top so that moisture is prevented from flowing into the air channel downstream from the filter.