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:
Sep. 11, 1984
Filed:
Jan. 27, 1983
Applicant:
Inventors:
Friedrich W Paurat, 4230 Wesel, DE;
Roland Paurat, 4230 Wesel, DE;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299-1 ; 173-4 ; 173-7 ; 299 75 ;
Abstract
A method of excavating a tunnel face in which the cutting head is sunk into the face to form an initial penetration and is then moved laterally. The power consumption of the cutting head drive motor is measured, compared with the setpoint value and the attack increment is controlled accordingly. The arm carrying the cutting head is swung at a maximum swing moment but the swing moment is reduced when monitored distortion of machine parts shows that this distortion has exceeded a predetermined value.
Paurat, Friedrich. (1984). Method and apparatus for excavating a tunnel or gallery face (U.S. Patent No. 4470635). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4470635
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile