Title:
HYDRAULIC AUTOMATIC BOOSTING PUMP
Document Type and Number:
WIPO Patent Application WO/2003/078837
Kind Code:
A1
Abstract:
A hydraulic automatic boosting pump is composed of a fixing joint, casing a reversing valve, a guide valve, a motor-drive automatic device for changing directions, a driving cylinder, a boosting cylinder and super high pressure pipes which are assembled into a whole body serially. The invention is suited to be used as a drilling pump with greater excel capacity. It features high drilling speed and low cost.
Inventors:
LI HONGMIN (CN)
Application Number:
PCT/CN2003/000192
Publication Date:
September 25, 2003
Filing Date:
March 17, 2003
Export Citation:
Assignee:
LI HONGMIN (CN)
International Classes:
E21B4/02; F04B47/02; (IPC1-7): F04B47/02; E21B7/18
Foreign References:
| CN1099456A | 1995-03-01 | |||
| CN1110374A | 1995-10-18 | |||
| CN1121979A | 1996-05-08 | |||
| SU742575A1 | 1980-06-25 |
Attorney, Agent or Firm:
LECOME INTELLECTUAL PROPERTY AGENT LTD. (3/F Quantam Silver Plaza No. 23 Zhi Chun Roa, Haidian District Beijing 3, CN)
Download PDF:
Previous Patent: ENGINE WITH PUMPING CAPABILITY
Next Patent: VACUUM PUMP CONTROL DEVICE, AND VACUUM DEVICE
Next Patent: VACUUM PUMP CONTROL DEVICE, AND VACUUM DEVICE