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. 16, 2021
Filed:
May. 23, 2017
Tco As, Bergen, NO;
Jan Tore Tveranger, Garnes, NO;
TCO AS, Bergen, NO;
Abstract
A toe valve that includes a housing having an interior and exterior; a sliding sleeve; a counter mechanism that includes a cylinder, a ratchet piston with first and second ends, and a ratchet shaft connected to the second end; a trigger assembly that includes a trigger housing, and a release piston. The trigger assembly is arranged between the counter mechanism and the sliding sleeve, and the release piston is configured to activate the sliding sleeve, and the ratchet shaft is configured to activate the release piston. The toe valve further includes a closed chamber enclosing the ratchet shaft and defined at least partly by the cylinder that includes a chamber fluid with a chamber pressure; an inlet pressure port configured to be in communication with a wellbore fluid with a wellbore pressure, and the first end of the ratchet piston is in fluid communication with the inlet pressure port.