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:
May. 01, 1990
Filed:
Feb. 19, 1988
Cyde Orr, Jr, Dunnwoody, GA (US);
Ronnie W Camp, Duluth, GA (US);
Micromeritics Instrument Corporation, Norcross, GA (US);
Abstract
An automated device for warming and cooling a sample is disclosed, and is particularly useful in connection with a flowing gas surface area analyzer. The device is capable of directing a flow of room temperature air onto a sample chamber after the chamber is removed from a coolant, thus rapidly warming the sample up to, but not exceeding, room temperature. In the disclosed embodiment, a Dewar flask containing coolant is mounted on an elevator platform. The flask is mechanically raised or lowered so as to immerse the sample chamber, located above the flask, in the coolant. A fan directs a flow of air onto the sample after the flask is lowered away from the sample chamber. A logic controller, connected to a timer, operates and regulates the cooling and warming process. The elevator assembly, fan and controller are disposed within a housing. The sample chamber is connected to gas input and output tubes, which are monitored by a detector for the composition of gas passing through the tubes. A method is also disclosed for analyzing the surface area of a sample using the device.