Down-the-hole drill hammer

Details Down-the-hole drill hammer Down-the-hole drill hammer

E - Fixed Constructions

21

B

E21B 4/14 (2006.01)

Patent

CA 2463258

A down-the-hole drill hammer comprises a sleeve (46) which defines a cylinder in which a piston is reciprocable. A plurality of axially extending ribs are formed on the outer surface of the sleeve, and conduits are formed in at least one of the ribs for conveying compressed air or another drive fluid to ports in the sleeve, to operate the piston. This arrangement makes it possible to increase the effective diameter of the hammer as a percentage of the bit diameter, which is particularly useful in relatively small drill hammers.

Cette invention concerne un marteau perforateur comprenant un manchon (46) délimitant un cylindre à l'intérieur duquel se déplace un piston animé d'un mouvement alternatif. Sur la surface extérieure, on trouve une pluralité de nervures dont l'une d'entre elles au moins renferme des conduits servant à acheminer vers des passages du manchon de l'air comprimé ou autre fluides de commande servant à actionner le piston. Ce montage permet d'accroître le diamètre effectif du marteau en pourcentage du diamètre de l'outil, ce qui est particulièrement appréciable pour des marteaux perforateurs de relativement petite taille.

Affiliated with

Also associated with

Rating

Down-the-hole drill hammer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Down-the-hole drill hammer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Down-the-hole drill hammer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1849760