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:
Dec. 12, 2006
Filed:
Dec. 06, 2005
Henry G. Dietz, Garden City, NY (US);
Henry G. Dietz, Garden City, NY (US);
Other;
Abstract
The present invention relates to Deadweight Pressure Testers used for the calibration of air pressure transducers. An air pressure transducer, which is to be calibrated, is set in parallel with the deadweight tester. Air is slowly pumped into the cylinder and the pressure inlet of the said pressure transducer to be calibrated. The air, which enters the cylinder under pressure, exerts a force on the cylindrical piston, thereby lifting the piston and balancing it against the air pressure. This force is balanced by the weights loaded on the top of the cylindrical piston. When the air pressure and the weights balance, the air pressure is known from the weights and the diameter of the cylindrical piston. A thin rubber seal allows for low friction and low air loss providing greater accuracy in measurements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile