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:
Jan. 09, 2024
Filed:
Feb. 13, 2020
Fci Holdings Delaware, Inc., Wilmington, DE (US);
Trent Andrew Roberts, Smeaton Grange, AU;
Jeremy Ross Arnot, Smeaton Grange, AU;
FCI Holdings Delaware, Inc., Wilmington, DE (US);
Abstract
A rock bolt dolly () which connects a self-drilling rock bolt (), to a rock bolting apparatus and transfers percussive energy applied to the dolly () by the rock bolting apparatus () to the rock bolt during installation of the rock bolt in strata and rock is disclosed. The dolly includes coupling means () for coupling the dolly to the output shaft of the rock bolting apparatus and a percussion plate () comprising an end plate () and integral side walls () defining an internally threaded recess for receiving the threaded end of the rock bolt, for applying percussive loading to the elongate hollow rod of the rock bolt () via the end plate and threaded side walls. The dolly also includes a body portion extending between the coupling means and the percussion plate transmitting forces from the output shaft to the percussion plate; which defines at least one passageway () for the passage of grout or resin from a reservoir through the rock bolt dolly and into the rock bolt.