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:
Aug. 12, 1986
Filed:
Jun. 06, 1984
Ronald F Bukovitz, Richardson, TX (US);
Walter C Vliet, Landing, NJ (US);
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Abstract
Disclosed is a new carriage feed system which utilizes in the preferred embodiment a single double rod feed cylinder having its rod ends mounted to the top bridge and base of the tower respectively. The cylinder is hydraulically fed at the ends of the rod. A sheave carrier is mounted at each end of the barrel of the cylinder. The cylinder barrel forming the structure for support of the carriers which are also guided in the tower structure for linear movement along the tower. The cable reeving for the system is disposed about sheaves on the carrier and anchored at the tower midpoint. Suspended from the cable and guided on the tower is a drill head which performs the usual drilling functions. The system is fully balanced with regard to loads in the cables and about the cylinder to minimize offset stress. In addition, all draw down forces are taken in tension in the cylinder rods.