Back to results
US 2010/0059280 A1Published application
Feed mechanism for drilling systems
AssigneeLongyear TM, Inc.
InventorNeil James Roberts
Life of this patent
Estimating the term…
Abstract
A cartridge feed screw nut includes a body having a tubular threaded opening defined therein and having side portions. The side portions include a plurality of lateral surfaces and a plurality of end surfaces. The lateral surfaces and the end surfaces form a profile shaped to prevent rotation of the cartridge feed screw nut relative to a front washer cylinder through engagement between at least one of the lateral surfaces or the end surfaces with the front washer cylinder.
Claims25
A cartridge feed screw nut, comprising:
- a body having a tubular threaded opening defined therein and having side portions including:
- a plurality of lateral surfaces, and
- a plurality of end surfaces, wherein lateral surfaces and the end surfaces form a profile, the profile being shaped to prevent rotation of the cartridge feed screw nut relative to a front washer cylinder through engagement between at least one of the lateral surfaces or the end surfaces with the front washer cylinder.
A drilling assembly, comprising:
- a front washer cylinder having a recess defined therein having a front washer cylinder profile;
- and
- a cartridge feed screw nut having a tubular threaded opening defined therein, the tubular threaded opening having a longitudinal axis, wherein the cartridge feed screw nut has a nut profile, the nut profile being complimentary to allow the cartridge feed screw nut to be received within the recess in the front washer cylinder.
A rock drill, comprising:
- a cartridge feed screw nut;
- and
- a front cylinder washer;
- wherein the cartridge feed screw nut and a recess defined in the front cylinder washer have complimentary shapes configured to allow the cartridge feed screw nut to be at least partially received in the front cylinder washer in such as manner that geometrical engagement between the front cylinder washer and the cartridge feed washer prevents rotation of the front cylinder washer relative to the front cylinder washer.
1 more element
A method of drilling, comprising:
- coupling a cartridge feed screw nut to a front cylinder washer, the cartridge feed screw nut having a tubular threaded opening defined therein, the tubular threaded opening having a longitudinal axis and the front cylinder washer having a recess defined therein, wherein coupling the cartridge feed screw nut to the front cylinder washer includes moving the cartridge feed screw nut in a direction that is at an acute angle relative to the longitudinal axis.
Dependencies are inferred from the claim text.