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.

Date of Patent:
Jan. 19, 2021

Filed:

Jul. 25, 2016
Applicant:

Royal Ihc Limited, Stocksfield, GB;

Inventor:

Jonathan Ralph Manchester, Stocksfield, GB;

Assignee:

Royal IHC Limited, Stocksfield, GB;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E02F 3/92 (2006.01); E02F 5/10 (2006.01); E02F 3/90 (2006.01); F04B 23/04 (2006.01); F04B 49/06 (2006.01); E02F 5/02 (2006.01); F04F 5/54 (2006.01);
U.S. Cl.
CPC ...
E02F 3/9206 (2013.01); E02F 3/90 (2013.01); E02F 5/02 (2013.01); E02F 5/107 (2013.01); F04B 23/04 (2013.01); F04B 49/065 (2013.01); F04F 5/54 (2013.01);
Abstract

An underwater trenching apparatus and pumping apparatus includes: first and second pumps and a trench-cutting jetting tool with first and second sections, the first pump having an inlet for fluid connection with a source of water and an outlet fluidly connected to the first section of the jetting tool, the second pump having an inlet for fluid connection with a source of water and an outlet fluidly connected to the second section of the jetting tool, wherein the outlet of the first pump is fluidly connected to the inlet of the second pump by valve means that is operable to divert at least a portion of an outlet flow of the first pump to the inlet of the second pump.


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