Title:
It pulls for extension of a bolt with a screw thread, and is a device.
Document Type and Number:
Japanese Patent JP6249655
Kind Code:
B2
Abstract:
The apparatus has a support tube (2) surrounding a screw thread end section (A) of a threaded bolt (3). Cylinders (1) are arranged in an extension of the tube and movable in a longitudinal direction (L). Pistons (5) are connectable with a hydraulic supply (6). A pin (20) is movably arranged in the longitudinal direction by the pistons. A pin end (22) of the pin is supportable against an end of the bolt. A detecting unit (30) detects a position of the pin in the longitudinal direction. Evaluation and control units (35A, 35B) are connected with the detecting unit and release the supply.
Inventors:
Frank Hohmann
Joerg Hohmann
Joerg Hohmann
Application Number:
JP2013149424A
Publication Date:
December 20, 2017
Filing Date:
July 18, 2013
Export Citation:
Assignee:
Frank Hohmann
Joerg Hohmann
Joerg Hohmann
International Classes:
B25B29/02; F16B31/04
Domestic Patent References:
| JP2008534307A | ||||
| JP2009107114A |
Foreign References:
| US20110271798 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno