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:
Mar. 15, 2022
Filed:
May. 29, 2019
Halliburton Energy Services, Inc., Houston, TX (US);
Abram Serda Galindo, Carrollton, TX (US);
James Dan Vick, Jr., Dallas, TX (US);
Leo Guadalupe Collins, Farmers Branch, TX (US);
Russell Irving Bayh, Carrollton, TX (US);
Jimmie Robert Williamson, Carrollton, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A flapper valve assembly including a tubular forming an interior passageway; a valve seat forming a portion of the interior passageway; a flapper plate that is pivotably mounted to the tubular at a pivot point such that the flapper plate is pivotable between a valve closed and a valve open position; and a spring engaging the flapper plate such that the flapper plate is biased towards the valve closed position; wherein, when the flapper plate is in the valve open position, the spring engages a top of the flapper plate at a first distance from the pivot point; wherein, when the flapper plate is in the valve closed position, the spring engages the top of the flapper plate at a second distance from the pivot point; and wherein the second distance is greater than the first distance.