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:
Nov. 10, 2020
Filed:
Sep. 18, 2017
Applicant:
Minnovation Limited, West Yorkshire, GB;
Inventor:
George Albert Parrott, Wakefield, GB;
Assignee:
Minnovation Limited, West Yorkshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 35/187 (2006.01); E21C 35/22 (2006.01); E21C 35/197 (2006.01); E21C 35/18 (2006.01); E21C 35/183 (2006.01); E21C 35/23 (2006.01);
U.S. Cl.
CPC ...
E21C 35/187 (2013.01); E21C 35/197 (2013.01); E21C 35/22 (2013.01); E01C 2301/50 (2013.01); E21C 35/183 (2013.01); E21C 35/188 (2020.05); E21C 35/1837 (2020.05); E21C 35/23 (2013.01);
Abstract
A cutter bit assembly for use in underground mining, road grading, and the like includes a water spray assembly having a water nozzle in a first chamber that discharges a water spray through an air gap and into the open end of a second chamber facing the air gap. Air is drawn into the water spray entering the second chamber from the air gap to produce a finer spray that is discharged from a second open end of the second chamber. The water spray helps clear the second chamber of any dirt or debris drawn by the air into the second chamber.