Invention Grant
- Patent Title: Pressure balancing device
- Patent Title (中): 压力平衡装置
-
Application No.: US13099471Application Date: 2011-05-03
-
Publication No.: US08689620B2Publication Date: 2014-04-08
- Inventor: James David Ratcliffe , Nicholas Peter Broom , Timothy Michael Gill
- Applicant: James David Ratcliffe , Nicholas Peter Broom , Timothy Michael Gill
- Applicant Address: GB
- Assignee: Sondex Wireline Limited
- Current Assignee: Sondex Wireline Limited
- Current Assignee Address: GB
- Agency: Global Patent Operation
- Agent Joanna M. Dombrowski
- Priority: GB1007811.1 20100511
- Main IPC: E21B47/06
- IPC: E21B47/06
Abstract:
A pressure balancing device for a transducer is provided. The pressure balancing device comprises: a pressure transmission device having a cross-sectional area and arranged, in use, to be exposed to a fluid; and a fluid chamber having a hollow shaft, the fluid chamber being arranged to be acted on by the pressure transmission device; wherein the cross-sectional area of the hollow shaft is less than the cross-sectional area of the pressure transmission device.
Public/Granted literature
- US20110277545A1 PRESSURE BALANCING DEVICE Public/Granted day:2011-11-17
Information query
