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:
Jun. 06, 2006
Filed:
Jan. 06, 2004
Yuzef Gokhfeld, Waltham, MA (US);
Yuzef Gokhfeld, Waltham, MA (US);
General Electric Company, Schenectady, NY (US);
Abstract
A pump for a gas sampling or analyzing system includes a pump body having walls impervious to the gas and an electrical coil within the body. The pump is coupled in series with a gas sensor and a gas volume containing the gas to be sampled or analyzed. By varying the amplitude of either the AC or DC current supplied to the coil, the temperature of the coil and, hence, the temperature of the gas within the pump can be varied, causing the pump to 'inhale' upon lowering the temperature of the gas within the pump and 'exhale' upon raising the temperature of the gas within the pump, thereby enabling the gas from the gas volume to be drawn periodically into and expelled from the sensor for sampling.