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Rodert; Jorgen A. R.
Saltsjo-Boo, SE
No. of patents:

Patent Number Title Of Patent Date Issued
5005656 Device in impact machines April 9, 1991
Device in impact machines. The device comprises a number of rods (6) provided with projections (51). The rods are journalled in a surrounding set of tubes (7) by means of elastic bushings (52,53) which are provided with grooves (57) through which said projections can be passed.
4993504 Device for efficient energy transfer and damping of impact drilling machines February 19, 1991
Device in impact machines. The device comprises a first chamber (5) which is connected to an accumlator (6) and the pressure of which is used to hold together a set of rods (2) forming part of the drill tool. Furthermore there is a second chamber (7) to damp the recoil from the set o

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