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:
Jan. 10, 1978
Filed:
Oct. 11, 1974
Jerome Leigh Kurz, Carmel Valley, CA (US);
Other;
Abstract
A device for high-volume sampling of gases comprising a filter, means for holding the filter, and means for drawing the gas through the filter and the means for holding the filter wherein a mass flow rate sensing probe is placed in the gas flow path between the filter and the means for drawing the gas through the filter in a location such that the velocity profile of the gas across the area of gas flow where the probe is located is substantially flat and substantially invariant with respect to temperature and pressure changes in the gas, the probe being connected to means for converting a signal from the probe into the changes in the rate at which the means for drawing the gas through said filter operates so that a substantially constant mass flow rate of gas flows through the device.