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US 6,142,244 AGranted
Percussion boring machine with run monitoring
AssigneeTracto-Technik Paul Schmidt Spezialmachinen
InventorAlfons Hesse
Life of this patent
Estimating the term…
Abstract
In a percussion boring machine having run monitoring a measuring and transmitting unit and an above-ground receiver the pneumatically or hydraulically driven and controlled striking piston (3) reciprocates between the tip of the machine and a rear stop (8). In order to expose the measuring and transmitting unit as little as possible to the influence of the ram blows acting on the tip of the machine, it is arranged so that (when viewed in the direction of advance) it is in front of the rear stop.
Claims16
A percussion boring machine comprising:
- a striking piston movable reciprocatingly in a housing;
- a rear stop for the striking piston;
- a plurality of transmitter elements next to each other in a pocket on an opposite side of the rear stop from the striking piston, the transmitter elements being positioned inside an annular insert.
A percussion boring machine comprising:
- a striking piston movable reciprocatingly in a housing;
- a rear stop for the striking piston;
- a transmitter on an opposite side of the rear stop from the striking piston, the transmitter being positioned in an annular insert inside a sleeve;
- and
- a slot in the housing in vicinity of the transmitter.
2 more elements
Dependencies are inferred from the claim text.