Title:
MANUALLY-OPERATED THREADING DEVICE
Document Type and Number:
WIPO Patent Application WO/1994/015744
Kind Code:
A1
Abstract:
The invention relates to a manually-operated threading device which comprises a threading die stock (3), and self-locking and holding mechanism (4) used for clamping a pipe to be threaded, a screw and nut mechanism (16) which constitutes an axial-feed mechanism that can produce an axial force being of advantage initiating screw-cutting, a slide block (17) which constitutes a differential mechanism that can be used for the different thread-interval of pipes, a threading driver (2) which turns the threading die stock (4), so that the threading die cuts the screw of pipe. The device according to the invention is of smaller volume, lighter weight. It is of advantage to operation and carrying, and it does not need electric power.
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Inventors:
CHEN MINGDE (CN)
LIU MINGLI (CN)
LIU MINGLI (CN)
Application Number:
PCT/CN1994/000005
Publication Date:
July 21, 1994
Filing Date:
January 14, 1994
Export Citation:
Assignee:
SOLAR ELECTRONIC SCIENCE & TEC (CN)
CHEN MINGDE (CN)
LIU MINGLI (CN)
CHEN MINGDE (CN)
LIU MINGLI (CN)
International Classes:
B23G1/26; (IPC1-7): B23G1/30; B23G1/52
Foreign References:
| CN2147063Y | 1993-11-24 | |||
| US4349931A | 1982-09-21 | |||
| US1351347A | 1920-08-31 | |||
| US4021133A | 1977-05-03 | |||
| CN2066780U | 1990-12-05 |
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