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US 2015/0083501 A1Published application
Slide valve, percussion device & method
AssigneeConstruction Tools PC AB
InventorAnders Lundgren
Life of this patent
Estimating the term…
Abstract
A slide valve for a hydraulic percussion device. The slide valve includes a transition surface that is arranged to alternately be subjected to a working pressure and a tank pressure to carry out a reciprocating movement when the percussion device is in use. The slide valve includes at least one channel that is open at one end of the slide valve, and at least one displaceable pin that is arranged inside the at least one channel.
Claims15
A rock drill machine, comprising:
- a feed leg, wherein the feed leg is attached to the rock drill machine with one end and rests on a support with another end, wherein the feed leg is configured to feed the rock drill machine in a drilling direction and to interrupt feeding of the rock drill machine in the drilling direction respectively,
- a control configured to regulate the feed leg, and wherein
- a starter configured to activate the rock drill machine, wherein the starter comprises an arm which is configured for pivotal movement from a start position at which the rock drill machine is inoperative, in a direction towards the rock drill machine for activation thereof, and wherein the control is provided on a rear handle on the rock drill machine substantially directly above or obliquely above and, seen in the drilling direction, in front of at least a part of the arm when said arm is in start position such that said control and said starter can be reached at the same time with one hand.
Dependencies are inferred from the claim text.