Borehole impact rock breaker
AssigneeJeffrey S. Senules
InventorJeffrey S. Senules
Life of this patent
Estimating the term…
Abstract
A device used to break rock from within a predrilled borehole through the use of impact pins which strike against the interior sides of a drilled hole. The device is loaded into a drilled hole and then activated by a percussive hammer located above the hole, providing percussive energy to the device which is then transferred to the sidewall of the drilled hole. The device includes an inner piston assembly which includes a driving surface for causing impact pins to strike the interior sidewall of the drilled hole in a rapid percussive manner so as to greatly improve the ability to break and shatter surrounding rock or concrete.
Claims19
A device used to break rock from within a predrilled borehole, comprising:
- a sleeve;
- an inner piston assembly slidably housed within the sleeve and configured for engagement with a percussive hammer, the inner piston assembly comprising at least one driving surface, wherein the inner piston assembly is slidable in a longitudinal direction of the sleeve;
- and
- at least one impact pin in communication with the driving surface and extendable from a sidewall of the sleeve,
- wherein movement of the inner piston assembly in the longitudinal direction of the sleeve causes the impact pin to strike a sidewall of the predrilled borehole.
A method of breaking rock from within a predrilled borehole, comprising:
- positioning in the borehole a device comprising:
- a sleeve,
- an inner piston assembly slidably housed within the sleeve and comprising at least one driving surface, wherein the inner piston assembly is slidable in a longitudinal direction of the sleeve, and
- at least one impact pin in communication with the driving surface and extendable from a sidewall of the sleeve,
- wherein the device is connected to a percussive hammer;
- and
- activating the percussive hammer,
- wherein activating the percussive hammer causes movement of the inner piston assembly in the longitudinal direction of the sleeve, causing the at least one impact pin to repeatedly strike a sidewall of the predrilled borehole.
An assembly used to break rock from within a predrilled borehole, comprising:
- a percussive hammer;
- and
- a rock breaker device attached to the percussive hammer,
- wherein the rock breaker device comprises:
- a sleeve;
- an inner piston assembly slidably housed within the sleeve and engaged with the percussive hammer, the inner piston assembly comprising at least one driving surface, wherein the inner piston assembly is slidable in a longitudinal direction of the sleeve;
- and
- at least one impact pin in communication with the driving surface and extendable from a sidewall of the sleeve,
- wherein movement of the inner piston assembly in the longitudinal direction of the sleeve causes the impact pin to strike a sidewall of the predrilled borehole.
Dependencies are inferred from the claim text.