Patent · US Active

Tong assembly with door position sensors

US11085253B2 · kind B2 · utility

0Cited by

7References

19Claims

0Family size

Assignee

WEATHERFORD TECHNOLOGY HOLDINGS, LLC · US

Inventors

Heidi N. Cline · Cypress, US
John D. Hooker, II · Houma, US
Karsten Heidecke · Houston, US
Bjoern Thiemann · Burgwedel, DE
Michael Wiedecke · Salzhemmendorf, DE

Key dates

Filing date	Nov 1, 2019
Grant date	Aug 10, 2021
Priority date	—
Expiry date	Jan 21, 2040

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/164
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The present disclosure generally relates to a tong assembly having position sensors for controlling door opening and closing sequence. The tong assembly includes a back section, an outer door section movably coupled to the back section, a first actuator configured to move the outer door section between an open position and a closed position, an inner door section movably coupled to the back section, a second actuator configured to move the inner door section between an open position and a closed position, a first sensor positioned to measure a position of the outer door section; and a second sensor positioned to measure a position of the inner door section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.