Metal working – Convertible metal working machine
Patent
1978-08-04
1980-11-18
Bilinsky, Z. R.
Metal working
Convertible metal working machine
15304, 81 5738, B25B 2902
Patent
active
042337275
ABSTRACT:
Accessory for a screw-tightening device having a support ring with hydraulic piston-cylinder assemblies as tensioning elements for pressure-vessel cover screws, the assemblies being disposable on a flange of the pressure-vessel cover, fastening nuts for the cover screws being loosenable and tightenable as well as transportable by the screw-tightening device, including a divided auxiliary ring having parting gaps formed in a circumferential region thereof corresponding to a circumferential region of the support ring at which parting gaps are likewise formed, the auxiliary ring and the support ring being mutually superimposable and clampable, the divided auxiliary ring having the parts thereof provided with respective means for engagement by a lifting tool, the rings having flange connections at the parting gaps thereof, the flange connections being disconnectible to form at least two separate arcuate units respectively including part of the support ring and part of the auxiliary ring clamped together for transport by the screw-tightening device.
REFERENCES:
patent: 3877326 (1975-04-01), Kock et al.
Kautetzky Anton
Muller Otto
Bilinsky Z. R.
Kraftwerk Union Aktiengesellschaft
Lerner Herbert L.
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