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:
Oct. 06, 1998
Filed:
Jun. 04, 1996
Gaylon S Campbell, Pullman, WA (US);
David P Lewis, Princeton, ID (US);
Decagon Devices, Inc., Pullman, WA (US);
Abstract
A dew point temperature measuring apparatus and method, which may be used to determine water activity, includes a chamber in which a sample of air is measured, an air circulation device positioned within the chamber, a sensor to measure the sample temperature, a relative humidity sensor, and a diverter for causing air circulating within the chamber to directly impinge the relative humidity sensor. Another embodiment involves mounting an air circulation device within the chamber such that it forces air inside the chamber to impinge directly upon the relative humidity sensor to reduce boundary layer resistance. Still another embodiment of the invention involves utilizing a temperature control device to control the temperature of interior surfaces within the chamber at a temperature higher than the sample of air within the chamber. Yet another embodiment of the present invention involves a product relative humidity sensor in which a dew point temperature sensor, such as a resistive or capacitive sensor, is used in combination with a heater and/or a fan to speed the time required to reach equilibrium and the accuracy of dew point temperature measurements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile