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. 10, 1985
Filed:
Jan. 13, 1984
Applicant:
Inventor:
Alan R Reece, Wylam, GB;
Assignee:
The British Petroleum Company p.l.c., London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
371425 ; 172393 ; 405179 ;
Abstract
A device for backfilling a trench from spoil left alongside it comprises a forecarriage (7) and a main frame (10). The former comprises means (12) for positioning it centrally in the trench (3). The latter is located behind the former and carries one or more angled blades (9) and lateral stabilizers (18,19) adapted to contact the ground outside the spoil. The device is towed rather than pushed and if a long tow-rope is used a pipeline can be trenched and the trench backfilled in a single traverse.