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. 04, 1986
Filed:
May. 13, 1983
Other;
Abstract
A method of preparing foundry sand by measuring moisture and compressibility includes the steps of determining a set of desired characteristics for compressibility and for moisture in accordance with a particular clay content, measuring the actual compressibility in a first stage early in the processing of the foundry sand, adding moisture in accordance with the difference between the moisture for the measured compressibility and the moisture for the desired compressibility to bring the foundry sand to a predetermined value in accordance with the assumed set of characteristics, making a second measurement of the compressibility in a second stage as a countercheck near the conclusion of the processing, measuring the difference between the actual compressibility at the second stage and the desired compressibility, and employing such difference as a correcting value to adjust the calibration of the first measuring stage. If the actual compressibility measurement at the second stage is found to be out of range of predetermined maximum-minimum limits, a dosing computer adds additives such as fresh sand, clay and coal dust, and/or filtered dust in amounts calculated to bring the sand back into such range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile