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. 23, 1982
Filed:
Mar. 18, 1980
Ferenc Kerekes, Ahlten, DE;
Preussag Aktiengesellschaft, , DE;
Abstract
A fluid-pressure measuring means for a well, which is adapted to be coupled into adjacent sections of a delivery or riser pipe in the area of the environment in which pressure is to be measured, having two concentric pipes, the inner one being in communication with the environment through a conduit extending through the annular space between the pipes, a valve within the inner pipe to close the conduit, and a pressure sensing device that can be lowered into the inner pipe to open the valve and close off a chamber within the inner pipe to sense the environmental pressure then prevailing in the chamber. The valve is spring biased to closed position and opens under the force of the weight of the pressure sensing device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile