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. 22, 1981
Filed:
Apr. 03, 1980
Thomas R Standish, Houston, TX (US);
Delta-X Corporation, Houston, TX (US);
Abstract
A method and apparatus for accepting analog voltage signals from a reciprocating liquid well pump and digitizing the signals and storing the signals for playback at a later time. A receiving circuit accepts two analog signals, one of which is proportional to the load in the polished rod, the other of which is proportional to the displacement of the polished rod. Simultaneously the two analog signals are digitized by means of an analog to digital converter and the digital data is stored on a digital memory integrated circuit. The digital memory may be replayed through a digital to analog converter into an x-y plotter. Digital latches and counters detect the start and end of a pumping cycle to insure that one full cycle of the reciprocating pump is stored in the digital memory. Timing circuitry strobes the load and displacement data into the digital memory in equal time increments to allow time related methematics to be performed by a computer. A circuit which accepts the digital memory, which may be separate from the recording device, formats the data and serially transmits the data in a form acceptable to a computer.